KR20230012972A - Organic light emitting device - Google Patents

Abstract

The present invention relates to an organic light-emitting device which comprises: a first electrode; a second electrode opposite the first electrode; and an intermediate layer interposed between the first electrode and the second electrode and containing a first compound and a second compound, wherein the first compound includes a first silyl group-containing group and two carbazole-derived groups, one carbazole-derived group of the two carbazole-derived groups is bonded through an N atom of the other carbazole-derived group, the second compound includes a second silyl group-containing group, a triazine group, and the carbazole-derived group, and at least one of the first compound and the second compound has a triplet energy level (T1) of 2.81 eV or higher. In the organic light-emitting device according to one aspect, an exciton is easily transferred to a blue light-emitting emitter compound to suppress device deterioration. As a result, the organic light-emitting device with high efficiency and long lifespans can be manufactured.

Description

Organic light emitting device {Organic light emitting device}

An organic light emitting device is presented.

An organic light emitting device is a self-luminous device and has a wide viewing angle and excellent contrast compared to conventional devices, a fast response time, excellent luminance, driving voltage and response speed characteristics, and can be multicolored. .

According to one example, the organic light emitting device may include an anode, a cathode, and an intermediate layer interposed between the anode and the cathode and including a light emitting layer. A hole transport region may be provided between the anode and the light emitting layer, and an electron transport region may be provided between the light emitting layer and the cathode. Holes injected from the anode move to the light emitting layer via the hole transport region, and electrons injected from the cathode move to the light emitting layer via the electron transport region. The holes and electrons recombine in the light emitting layer region to generate excitons. As these excitons change from the excited state to the ground state, light is generated.

It is to provide a long-life organic light emitting device using a combination of novel host compounds.

According to one aspect, the first electrode; a second electrode facing the first electrode; and an intermediate layer interposed between the first electrode and the second electrode and comprising a first compound and a second compound, wherein the first compound comprises a first silyl group-containing group and two carbazole-derived groups. Including, wherein one carbazole-derived group of the two carbazole-derived groups is bonded through the N atom of the other carbazole-derived group, and the second compound is a second silyl group-containing group, tree An azine group and a carbazole-derived group are included, and at least one of the first compound and the second compound has a triplet energy level (T1) of 2.81 eV or more.

According to another aspect, a first electrode; a second electrode facing the first electrode; and an intermediate layer interposed between the first electrode and the second electrode and having a light emitting layer including a first compound, a second compound, and a third compound, wherein the first compound comprises a first silyl group-containing group and It includes two carbazole-derived groups, wherein one carbazole-derived group of the two carbazole-derived groups is bonded through the N atom of the other carbazole-derived group, and the second compound is An organic light-emitting device is provided, which includes a 2-silyl group-containing group, a triazine group, and a carbazole-derived group, and wherein the third compound includes an organo-metallic compound represented by Formula 3 or Formula 5 below.

According to another aspect, the first electrode; a second electrode facing the first electrode; and an intermediate layer interposed between the first electrode and the second electrode and having a light emitting layer including a first compound, a second compound, and a fourth compound, wherein the first compound comprises a first silyl group-containing group and It includes two carbazole-derived groups, wherein one carbazole-derived group of the two carbazole-derived groups is bonded through the N atom of the other carbazole-derived group, and the second compound is An organic light emitting device including a 2-silyl group-containing group, a triazine group, and a carbazole-derived group, and the fourth compound including a polycyclic compound represented by Formula 4 below is provided.

An organic light emitting device according to one aspect includes a first compound and a second compound, and at least one of the first compound and the second compound has a T ₁ energy level value of 2.81 eV or more, thereby obtaining a blue light emitting emitter compound It is easy to transfer excitons to the device, suppressing device deterioration, and as a result, it is possible to manufacture an organic light emitting device with high efficiency and long lifespan.

1 is a schematic cross-sectional view of an organic light emitting device 10 according to an embodiment.
2 is a graph showing emission curves of thin films co-deposited with compounds H1 and E2 having longer wavelengths compared to thin films co-deposited with compounds Z1 and Z2.
3(a) shows a deconvolution graph of the emission curve of the light emitting layer prepared by co-depositing Z1:Z2:P8 and H1:E1:P8, respectively, and FIG. A graph showing the L95 lifespan ratio to the ^2nd peak ratio in the light emitting layer prepared by co-evaporation of any one of H1, E1 to E6, E9, E11 to E13 and P8, and the PL curve of H8:E1:P8 to be.

The organic light emitting device may include a first electrode; a second electrode facing the first electrode; and an intermediate layer interposed between the first electrode and the second electrode and comprising a first compound and a second compound, wherein the first compound comprises a first silyl group-containing group and two carbazole-derived groups. Including, wherein one carbazole-derived group of the two carbazole-derived groups is bonded through the N atom of the other carbazole-derived group, and the second compound is a second silyl group-containing group, tree An azine group and a carbazole-derived group may be included, and at least one of the first compound and the second compound may have a triplet energy level (T1) of 2.81 eV or more.

Since at least one of the first compound and the second compound has a T ₁ energy level value of 2.81 eV or higher, transfer of excitons to the blue light emitting emitter compound is facilitated, and device deterioration is suppressed, resulting in high efficiency and long lifespan. It is possible to manufacture an organic light emitting device of

According to one embodiment, the intermediate layer may include a light emitting layer, and the light emitting layer may include the first compound and the second compound.

For example, the first compound and the second compound may have different structures. The first compound may be a hole-transporting host compound, and the second compound may be an electron-transporting host compound.

According to one embodiment, the first compound and the second compound may form an exciplex host. In the exciplex host, the excited energy state is lowered by mixing the molecular orbitals of the first compound and the second compound, so that the exciton transfer rate to the dopant can be increased, whereby the efficiency and lifetime of the entire device can be improved. .

According to one embodiment, the light emitting layer may further include one or more dopant compounds.

For example, the dopant compound may include a third compound, a fourth compound, or a combination thereof. Here, the third compound is an organo-metallic compound, and the fourth compound is a polycyclic compound, which will be described in detail later.

According to one embodiment, the second compound and the dopant compound may form an exciplex. As a result, the formation of low-energy exciplexes is possible, and cooling of excitons existing in the device to the ground state can be accelerated. Manufacturing of a light emitting element becomes possible.

Hereinafter, the first compound, the second compound, the third compound, and the fourth compound will be described.

[First compound]

As described above, the first compound is a hole-transporting host compound and includes a first silyl group-containing group and two carbazole-derived groups, wherein one of the two carbazole-derived groups is carbazole-derived. It has a structure in which a group is bonded through the N atom of another carbazole-derived group.

The first compound may be represented by Chemical Formula 1-1 or 1-2:

<Formula 1-1>

<Formula 1-2>

<Formula A>

In Formulas 1-1, 1-2 and A,

CY ₁₀ to CY ₁₉ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;

L ₁₁ to L ₁₄ are each independently a substituted or unsubstituted C ₁ -C ₂₀ alkylene group, a substituted or unsubstituted C ₂ -C ₂₀ alkenylene group, or a substituted or unsubstituted C ₅ -C ₆₀ carbocyclic group. group or a substituted or unsubstituted C ₁ -C ₆₀ heterocyclic group;

a11 to a14 are each independently an integer selected from 0 to 5;

When a11 is 0, L ₁₁ is absent and the N atom and CY ₁₇ are directly bonded, when a12 is 0, L ₁₂ is absent and the N atom and CY ₁₉ are directly bonded, and when a13 is 0, L ₁₃ is absent and Si atoms are directly bonded to CY ₁₀ to CY ₁₉ , and when a14 is 0, L ₁₄ is absent and Si is directly bonded to adjacent Si;

T ₁₀ to T ₁₉ are each independently a group represented by Formula A;

c10 to c19 are integers independently selected from 0 to 10;

the sum of c10, c11, c12, c13, and c14 is 1 or more;

The sum of c15, c16, c17, c18, and c19 is 1 or more;

n is an integer selected from 0 to 3;

R ₁₀ to R ₁₉ and R ₅₁ to R ₅₅ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amino group, and an amidino group. group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, substituted or unsubstituted C ₁ -C ₆₀ alkyl group, substituted or unsubstituted C ₂ -C ₆₀ alkenyl group , a substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ Heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group A group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )( Q ₇ ), -P(=0)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );

b10 to b19 are integers independently selected from 0 to 10;

b51 to b55 are integers independently selected from 0 to 5;

The above substituted C ₅ -C ₆₀ carbocyclic group, substituted C ₁ -C ₆₀ heterocyclic group, substituted C ₁ -C ₂₀ alkylene group, substituted C ₂ -C ₂₀ alkenylene group, substituted C ₁ -C ₆₀ alkyl group, substituted C ₂ -C ₆₀ alkenyl group, substituted C ₂ -C ₆₀ alkynyl group, substituted C ₁ -C ₆₀ alkoxy group, substituted C ₃ -C ₁₀ cycloalkyl group, substituted C ₁ - C ₁₀ heterocycloalkyl group, substituted C ₃ -C ₁₀ cycloalkenyl group, substituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted C ₆ -C ₆₀ aryl group, substituted C ₆ -C ₆₀ aryloxy group, Substituents of substituted C ₆ -C ₆₀ arylthio groups, substituted C ₁ -C ₆₀ heteroaryl groups, substituted monovalent non-aromatic condensed polycyclic groups and substituted monovalent non-aromatic heteropolycyclic groups,

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ an alkynyl group or a C ₁ -C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ - C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group , monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or a C ₁ -C ₆₀ alkyl group, substituted with any combination thereof, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group or C ₁ -C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alkynyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ - C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group , -N(Q ₂₁ )(Q ₂₂ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=O)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ) or at least one unsubstituted or substituted with any combination thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkyl group Alkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent a non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group;

-N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=O)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or

any combination thereof;

ego,

The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; or a monovalent non-aromatic heterocondensed polycyclic group;

According to one embodiment, the CY ₁₀ to CY ₁₉ are each independently a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, a pyrene group, a furan group, a thiophene group, a pyrrole group, a silole group, a benzofuran group, Benzothiophene group, indole group, indene group, benzosylol group, dibenzofuran group, dibenzothiophene group, carbazole group, fluorene group, dibenzosilol group, azabenzofuran group, azabenzothiophene group, It may be an azaindole group, an azaindene group, an azabenzosylol group, an azadibenzofuran group, an azadibenzothiophene group, an azacarbazole group, an azafluorene group, or an azadibenzosylol group.

For example, the CY ₁₀ to CY ₁₉ may be independently selected from a benzene group, a benzofuran group, a benzothiophene group, an indole group, a benzosilol group, a dibenzofuran group, a dibenzothiophene group, a carbazole group, and a fluorene group. group, or a dibenzosilol group.

For example, the CY ₁₀ may be a benzene group.

According to one embodiment, L ₁₁ to L ₁₄ are independently of each other,

A C ₁ -C ₂₀ alkylene group or C ₂ - unsubstituted or substituted with heavy hydrogen, -F, -Cl, -Br, -I, a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, or a combination thereof C ₂₀ alkenylene group; or

Heavy hydrogen, -F, -Cl, -Br, -I, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, pentalenyl group, naphthyl group, azulenyl group, phenalenyl group, phenanthrenyl group, Anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, -N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=O)(Q ₃₈ )(Q ₃₉ ), -P(Q ₃₈ )(Q ₃₉ ), or a substituted or unsubstituted phenylene group with a combination thereof , pentalenylene group, naphthylene group, azulenylene group, phenalenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylenylene group, pyrenylene group, chrysenylene group, or naphthacenylene group; ego,

The Q ₃₁ to Q ₃₉ may be each independently selected from a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, and a naphthyl group.

For example, according to one embodiment, L ₁₁ to L ₁₄ are independently of each other,

Heavy hydrogen, -F, -Cl, -Br, -I, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, naphthyl group, phenanthrenyl group, anthracenyl group, -N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=O)(Q ₃₈ )(Q ₃₉ ), -P(Q ₃₈ ) (Q ₃₉ ) or a substituted or unsubstituted phenylene group, a naphthylene group, a phenanthrenylene group, or an anthracenylene group; and

The Q ₃₁ to Q ₃₉ may be each independently selected from a phenyl group, a biphenyl group, a terphenyl group, and a naphthyl group.

According to one embodiment, a11 and a12 may be 0.

According to one embodiment, a13 may be 0 or 1, and n may be 0.

According to one embodiment, c10 in Formula 1-1 may be 1, and c11 to c14 may be 0, respectively.

According to one embodiment, in Formula 1-2, c15 is 1 and c16, c17, c18, and c19 are each 0, or c16 is 1 and c15, c17, c18, and c19 are each 0, or c17 is 1, and c15, c16, c18, and c19 may each be 0, c18 may be 1 and c15, c16, c17, and c19 may each be 0, or c19 may be 1 and c15, c16, c17, and c18 may each be 0.

According to one embodiment, n may be zero.

According to one embodiment, R ₁₀ to R ₁₉ and R ₅₁ to R ₅₅ are independently of each other,

Hydrogen, heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group (CN), a nitro group, an amino group, a C ₁ -C ₆₀ alkyl group or a C ₁ -C ₆₀ alkoxy group;

a C ₁ -C ₆₀ alkyl group or a C ₁ -C ₆₀ alkoxy group substituted with at least one of heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group (CN), a nitro group, and an amino group;

Heavy hydrogen, -F, -Cl, -Br, -I, hydroxyl group, cyano group (CN), nitro group, amino group, C ₁ -C ₆₀ alkyl group and C ₁ -C ₆₀ alkoxy group, cyclopentyl group, cyclohexyl group Real group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pi Renyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyr Midinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, phenanthroly Nyl group, benzoimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzooxazolyl group, isobenzooxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, dibenzofuranyl group, Dibenzothiophenyl group, carbazolyl group, -N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(= O) a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, unsubstituted or substituted with at least one of (Q ₃₈ )(Q ₃₉ ) and -P(Q ₃₈ )(Q ₃₉ ); Cycloheptenyl group, phenyl group, biphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrroyl group, thiophenyl group, furanyl group , Imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindoleyl group, indolyl group, Indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, phenanthrolinyl group, benzoimidazolyl group, benzofuranyl group, benzothiophenyl group, Isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxa a diazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzoselenophenyl group, a dibenzosilol group or a carbazolyl group; or

-N(Q ₁ )(Q ₂ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=O)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );

For example, R ₁₀ to R ₁₉ and R ₅₁ to R ₅₅ are each independently

Hydrogen, heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group (CN), a nitro group, an amino group, a C ₁ -C ₂₀ alkyl group or a C ₁ -C ₂₀ alkoxy group;

a C ₁ -C ₂₀ alkyl group or a C ₁ -C ₂₀ alkoxy group substituted with heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group (CN), a nitro group, an amino group, or a combination thereof;

Heavy hydrogen, -F, -Cl, -Br, -I, hydroxyl group, cyano group (CN), nitro group, amino group, C ₁ -C ₂₀ alkyl group and C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, naph ethyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzoselenophenyl group, dibenzosilol group, carbazolyl group, -N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=O)(Q ₃₈ )(Q ₃₉ ) and -P(Q ₃₈ )(Q ₃₉ ) Substituted or unsubstituted with at least one of a phenyl group, a biphenyl group, a naphthyl group, a fluorenyl group, a phenanthrenyl group, anthracenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzoselenophenyl group, a dibenzosilol group, or Carbazolyl group; or

-N(Q ₁ )(Q ₂ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=O)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );

According to one embodiment, the first compound is represented by Formula 1-1-1, 1-1-2, 1-2-1, 1-2-2, 1-2-3, or 1-2-4 can be displayed:

<Formula 1-1-1>

<Formula 1-1-2>

<Formula 1-2-1>

<Formula 1-2-2>

<Formula 1-2-3>

<Formula 1-2-4>

Among Formulas 1-1-1, 1-1-2, 1-2-1, 1-2-2, 1-2-3, and 1-2-4,

CY ₁₁ to CY ₁₆ , CY ₁₈ , CY ₁₉ , R ₁₀ to R ₁₉ , T ₁₀ to T ₁₉ , L ₁₁ , L ₁₂ , a11, a12, b11 to b16, b18, b19, c11 to c16, c18 and c19 respectively refer to the foregoing,

b10 is an integer selected from 0 to 4, c10 is an integer selected from 0 to 4, the sum of b10 and c10 is 4,

b17 is an integer selected from 0 to 3, c17 is an integer selected from 0 to 3, and the sum of b17 and c17 is 3.

For example, in Formulas 1-1-1 and 1-1-2, c10 is 1 and each of c11 to c14 is 0;

In Formulas 1-2-1 to 1-2-4, c19 is 1, and each of c15, c16, and c18 is 0;

In Formulas 1-2-1 to 1-2-4, c15 is 1, and each of c16, c18, and c19 is 0;

*94 In Formulas 1-2-1 to 1-2-4, c18 is 1, and each of c15, c16, and c19 is 0; or

In Chemical Formulas 1-2-1 to 1-2-4, c16 may be 1, and each of c15, c18, and c19 may be 0.

According to one embodiment, the first compound may be selected from the following compounds H1 to H23:

[Second Compound]

As described above, the second compound is an electron-transporting host compound and includes a second silyl group-containing group, a triazine group, and a carbazole-derived group.

According to one embodiment, the second compound may have a structure in which a silyl group-containing group is bonded to one or more carbon atoms of a triazine group. For example, in the second compound, a silyl group-containing group is bonded to two of the three carbons of the triazine group and a carbazole-derived group is bonded to the remaining one carbon, or a silyl group-containing group is bonded to one carbon. group is bonded and a carbazole-derived group is bonded to the remaining two carbons, or a silyl group-containing group is bonded to one carbon and a carbazole-derived group is bonded to one carbon and the remaining one carbon is bonded to R ₂₃ groups can be combined.

According to one embodiment, the second compound may be represented by Chemical Formula 2-1:

<Formula 2-1>

<Formula A>

In Formulas 2-1 and A,

CY ₂₁ and CY ₂₂ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;

L ₁₃ , L ₁₄ and L ₂₁ are each independently a substituted or unsubstituted C ₁ -C ₂₀ alkylene group, a substituted or unsubstituted C ₂ -C ₂₀ alkenylene group, or a substituted or unsubstituted C ₅ -C ₆₀ A carbocyclic group or a substituted or unsubstituted C ₁ -C ₆₀ heterocyclic group;

a13, a14 and a21 are each independently an integer selected from 0 to 5;

When a13 is 0, L ₁₃ is absent and Si atoms are directly bonded to CY ₁₀ to CY ₁₉ , when a14 is 0, L ₁₄ is absent and Si is directly bonded to adjacent Si, and when a21 is 0, L ₂₁ is absent. and the N atom is directly bonded to the C atom of the triazine group,

T ₂₁ Silver A group represented by Formula A,

c21 is independently 1 or 2;

n is an integer selected from 0 to 3;

R ₂₁ to R ₂₃ and R ₅₁ to R ₅₅ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amino group, and an amidino group. group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, substituted or unsubstituted C ₁ -C ₆₀ alkyl group, substituted or unsubstituted C ₂ -C ₆₀ alkenyl group , a substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ Heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group A group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )( Q ₇ ), -P(=0)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );

b21 to b22 are integers independently selected from 0 to 10;

b23 is 0 or 1;

b51 to b55 are integers independently selected from 0 to 5;

The above substituted C ₅ -C ₆₀ carbocyclic group, substituted C ₁ -C ₆₀ heterocyclic group, substituted C ₁ -C ₂₀ alkylene group, substituted C ₂ -C ₂₀ alkenylene group, substituted C ₁ -C ₆₀ alkyl group, substituted C ₂ -C ₆₀ alkenyl group, substituted C ₂ -C ₆₀ alkynyl group, substituted C ₁ -C ₆₀ alkoxy group, substituted C ₃ -C ₁₀ cycloalkyl group, substituted C ₁ - C ₁₀ heterocycloalkyl group, substituted C ₃ -C ₁₀ cycloalkenyl group, substituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted C ₆ -C ₆₀ aryl group, substituted C ₆ -C ₆₀ aryloxy group, Substituents of substituted C ₆ -C ₆₀ arylthio groups, substituted C ₁ -C ₆₀ heteroaryl groups, substituted monovalent non-aromatic condensed polycyclic groups and substituted monovalent non-aromatic heteropolycyclic groups,

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ an alkynyl group or a C ₁ -C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ - C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group , monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or a C ₁ -C ₆₀ alkyl group, substituted with any combination thereof, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group or C ₁ -C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alkynyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ - C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group , -N(Q ₂₁ )(Q ₂₂ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=O)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ) or at least one unsubstituted or substituted with any combination thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkyl group Alkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent a non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group;

-N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=O)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or

any combination thereof;

ego,

The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; or a monovalent non-aromatic heterocondensed polycyclic group;

According to one embodiment, CY ₂₁ and CY ₂₂ are independently of each other,

Benzene group, naphthalene group, anthracene group, phenanthrene group, pyrene group, furan group, thiophene group, pyrrole group, silol group, benzofuran group, benzothiophene group, indole group, indene group, benzosilol group, di Benzofuran group, dibenzothiophene group, carbazole group, fluorene group, dibenzosilol group, azabenzofuran group, azabenzothiophene group, azaindole group, azaindene group, azabenzosilol group, azadi It may be a benzofuran group, an azadibenzothiophene group, an azacarbazole group, an azafluorene group, or an azadibenzosilol group.

For example, CY ₂₁ and CY ₂₂ are each independently selected from a benzene group, a benzofuran group, a benzothiophene group, an indole group, a benzosilol group, a dibenzofuran group, a dibenzothiophene group, a carbazole group, and a fluorene group. group, or a dibenzosilol group.

For information on L ₁₃ , L ₁₄ , a13, a14, R ₅₁ to R ₅₅ , b51 to b55, and n, refer to the disclosure of the first compound.

According to one embodiment, L ₂₁ is deuterium, -F, -Cl, -Br, -I, a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, or a substituted or unsubstituted C ₁ -C ₂₀ alkylene group or C ₂ -C ₂₀ alkenylene group; or

Heavy hydrogen, -F, -Cl, -Br, -I, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, pentalenyl group, naphthyl group, azulenyl group, phenalenyl group, phenanthrenyl group, Anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, -N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=O)(Q ₃₈ )(Q ₃₉ ), -P(Q ₃₈ )(Q ₃₉ ), or a substituted or unsubstituted phenylene group with a combination thereof , pentalenylene group, naphthylene group, azulenylene group, phenalenylene group, phenanthrenylene group, anthracenylene group, fluoranthenylene group, triphenylenylene group, pyrenylene group, chrysenylene group, or naphthacenylene group; ego,

The Q ₃₁ to Q ₃₉ may be each independently selected from a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, and a naphthyl group.

For example, L ₂₁ is deuterium, -F, -Cl, -Br, -I, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, naphthyl group, phenanthrenyl group, anthracenyl group, - N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=O)(Q ₃₈ )(Q ₃₉ ) , -P(Q ₃₈ )(Q ₃₉ ) or a phenylene group, a naphthylene group, a phenanthrenylene group, or an anthracenylene group unsubstituted or substituted with a combination thereof;

The Q ₃₁ to Q ₃₉ may be each independently selected from a phenyl group, a biphenyl group, a terphenyl group, and a naphthyl group.

According to one embodiment, a21 may be 0.

According to one embodiment, c21 may be 1 and b23 may be 1, or c21 may be 2 and b23 may be 0.

According to one embodiment, R ₂₁ to R ₂₃ are independently of each other,

Hydrogen, heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group (CN), a nitro group, an amino group, a C ₁ -C ₆₀ alkyl group or a C ₁ -C ₆₀ alkoxy group;

a C ₁ -C ₆₀ alkyl group or a C ₁ -C ₆₀ alkoxy group substituted with at least one of heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group (CN), a nitro group, and an amino group;

Heavy hydrogen, -F, -Cl, -Br, -I, hydroxyl group, cyano group (CN), nitro group, amino group, C ₁ -C ₆₀ alkyl group and C ₁ -C ₆₀ alkoxy group, cyclopentyl group, cyclohexyl group Real group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pi Renyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyr Midinyl group, pyridazinyl group, isoindolyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, phenanthroly Nyl group, benzoimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzooxazolyl group, isobenzooxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, di A benzofuranyl group, a dibenzothiophenyl group, a carbazolyl group, -N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), A cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclounsubstituted or substituted with at least one of -P(=O)(Q ₃₈ )(Q ₃₉ ) and -P(Q ₃₈ )(Q ₃₉ ) Hexenyl group, cycloheptenyl group, phenyl group, biphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrroyl group, thio Phenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindoleyl group , Indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, phenanthrolinyl group, benzoimidazolyl group, benzofuranyl group, Benzothiophenyl group, isobenzothiazolyl group, benzooxazolyl group, isobenzooxazolyl group, triazolyl group, tet a razolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzoselenophenyl group, a dibenzosilol group or a carbazolyl group; or

-N(Q ₁ )(Q ₂ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=O)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );

For example, R ₂₁ to R ₂₃ are independently of each other,

Hydrogen, heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group (CN), a nitro group, an amino group, a C ₁ -C ₂₀ alkyl group or a C ₁ -C ₂₀ alkoxy group;

a C ₁ -C ₂₀ alkyl group or a C ₁ -C ₂₀ alkoxy group substituted with heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group (CN), a nitro group, an amino group, or a combination thereof;

Heavy hydrogen, -F, -Cl, -Br, -I, hydroxyl group, cyano group (CN), nitro group, amino group, C ₁ -C ₂₀ alkyl group and C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, naph A tyl group, a fluorenyl group, a phenanthrenyl group, anthracenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzoselenophenyl group, a dibenzosilol group, a triazinyl group, a carbazolyl group, -N(Q ₃₁ )( Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=0)(Q ₃₈ )(Q ₃₉ ) and -P(Q ₃₈ ) (Q ₃₉ ) A phenyl group, a biphenyl group, a naphthyl group, a fluorenyl group, a phenanthrenyl group, an anthracenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzoselenophenyl group, a dibenzoselenophenyl group, which is unsubstituted or substituted with at least one of (Q 39 ) A benzosilol group, a triazinyl group or a carbazolyl group; or

-N(Q ₁ )(Q ₂ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=O)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );

According to one embodiment, the second compound may be represented by Chemical Formula 2-1-1 or 2-2-2:

<Formula 2-1-1>

<Formula 2-2-2>

In Chemical Formulas 2-2-1 and 2-2-2,

CY ₂₁ , CY ₂₂ , L ₂₁ , a21, R ₂₁ , R ₂₂ , b21, b22, and R ₂₃ refer to the above description, respectively,

For information on each of T _21a and T _21b , refer to the description of T ₂₁ described above.

For example, in Chemical Formulas 2-2-1 and 2-2-2,

CY ₂₁ and CY ₂₂ are benzene groups;

a21 is 0,

R ₂₃ , (R ₂₁ ) _b21 and (R ₂₂ ) _b22 are each independently hydrogen, methyl group, ethyl group, n -propyl group, isopropyl group, n -butyl group, sec -butyl group, isobutyl group, tert - Butyl group, n -pentyl group, tert -pentyl group, neopentyl group, isopentyl group, sec -pentyl group, 3-pentyl group, sec -isopentyl group, n -hexyl group, isohexyl group, sec -hexyl group , tert -hexyl group, n -heptyl group, isoheptyl group, sec -heptyl group, tert -heptyl group, n -octyl group, isooctyl group, sec -octyl group, tert -octyl group, n -nonyl group, isono a yl group, a sec -nonyl group, a tert -nonyl group, an n -decyl group, an isodecyl group, a sec -decyl group, or a tert -decyl group; or

Heavy hydrogen, -F, -Cl, -Br, -I, hydroxyl group, cyano group (CN), nitro group, amino group, methyl group, ethyl group, n -propyl group, isopropyl group, n -butyl group, sec -butyl group , isobutyl group, tert -butyl group, n -pentyl group, tert -pentyl group, neopentyl group, isopentyl group, sec -pentyl group, 3-pentyl group, sec -isopentyl group, n -hexyl group, iso Hexyl group, sec -hexyl group, tert -hexyl group, n -heptyl group, isoheptyl group, sec -heptyl group, tert -heptyl group, n -octyl group, isooctyl group, sec -octyl group, tert -octyl group, n -nonyl group, isononyl group, sec -nonyl group, tert -nonyl group, n -decyl group, isodecyl group, sec -decyl group, tert -decyl group, or a phenyl group unsubstituted or substituted with a combination thereof; It may be a biphenyl group, a naphthyl group, a fluorenyl group, a phenanthrenyl group, anthracenyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzoselenophenyl group, a dibenzosilol group, a triazinyl group, or a carbazolyl group. .

According to one embodiment, the second compound may be selected from the following compounds E1 to E17:

[Third compound]

As described above, the third compound is an organo-metallic compound and may be a phosphorescent dopant. The phosphorescent dopant may be a blue phosphorescent dopant. For example, the third compound may be a blue platinum dopant.

According to another embodiment, the third compound is an organo-metallic compound and may be a sensorizer compound used together with other light emitting dopants to transfer excitons transferred from the host to the light emitting dopant.

* According to the 167th embodiment, the third compound may include a transition metal and a tetradentate ligand.

For example, the third compound may include an organo-metallic compound represented by Chemical Formula 3:

<Formula 3>

In Formula 3,

M is a transition metal;

X ₁₁ to X ₁₄ are each independently C or N;

Two of the bonds between X ₁₁ and M, the bond between X ₁₂ and M, the bond between X ₁₃ and M, and the bond between X ₁₄ and M are coordinate bonds, and the other two are covalent bonds;

ring CY ₃₁ to ring CY ₃₄ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;

T ₃₁ is a single bond, a double bond, *-N(R _35a )-*', *-B(R _35a )-*', *-P(R _35a )-*', *-C(R _35a )( R _35b )-*', *-Si(R _35a )(R _35b )-*', *-Ge(R _35a )(R _35b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _35a )= *', *=C(R _35a )-*', *-C(R _35a )=C(R _35b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,

T ₃₂ is a single bond, a double bond, *-N(R _36a )-*', *-B(R _36a )-*', *-P(R _36a )-*', *-C(R _36a )( R _36b )-*', *-Si(R _36a )(R _36b )-*', *-Ge(R _36a )(R _36b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _36a )= *', *=C(R _36a )-*', *-C(R _36a )=C(R _36b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,

T ₃₃ is a single bond, a double bond, *-N(R _37a )-*', *-B(R _37a )-*', *-P(R _37a )-*', *-C(R _37a )( R _37b )-*', *-Si(R _37a )(R _37b )-*', *-Ge(R _37a )(R _37b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _37a )= *', *=C(R _37a )-*', *-C(R _37a )=C(R _37b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,

T ₃₄ is a single bond, a double bond, *-N(R _38a )-*', *-B(R _38a )-*', *-P(R _38a )-*', *-C(R _38a )( R _38b )-*', *-Si(R _38a )(R _38b )-*', *-Ge(R _38a )(R _38b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _38a )= *', *=C(R _38a )-*', *-C(R _38a )=C(R _38b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,

n31 to n34 are each independently an integer of 0 to 5, and 3 or more of n31 to n34 are each independently an integer of 1 to 5;

When n31 is 0, T ₃₁ does not exist, when n32 is 0, T ₃₂ does not exist, when n33 is 0, T ₃₃ does not exist, and when n34 is 0, T ₃₄ does not exist;

When n31 is 2 or more, two or more T ₃₁ are the same or different, when n32 is 2 or more, two or more T ₃₂ are the same or different, and when n33 is 2 or more, two or more T ₃₃ are the same or different, and n34 is When 2 or more, 2 or more T ₃₄ are the same as or different from each other,

R ₃₁ to R ₃₄ , R _35a , R _35b , R _36a , R _36b , R _37a , R _37b , R _38a , and R _38b are each independently hydrogen, deuterium, -F, -Cl, -Br, -I , -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , -SF ₅ , hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group , A carboxylic acid group or its salt thereof, a sulfonic acid group or its salt thereof, a phosphoric acid group or its salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted Cyclic C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₇ -C ₆₀ alkyl Aryl group, substituted or unsubstituted C ₆ -C ₆₀ Aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ Arylthio group, substituted or unsubstituted C ₁ -C ₆₀ Heteroaryl group, substituted or unsubstituted C ₂ -C ₆₀ Alkylheteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Si(Q ₃ )(Q ₄ )(Q ₅ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=O)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );

a31 to a34 are each independently an integer of 0 to 20;

Two or more of a31 R ₃₁ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10a or a substituted or unsubstituted group with at least one R _10a can form a C ₁ -C ₃₀ heterocyclic group;

Two or more of a32 R ₃₂ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -unsubstituted or substituted with at least one R _10a . can form a C ₃₀ heterocyclic group;

Two or more of a33 R ₃₃ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -unsubstituted or substituted with at least one R _10a . can form a C ₃₀ heterocyclic group;

Two or more of a34 R ₃₄ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -unsubstituted or substituted with at least one R _10a . can form a C ₃₀ heterocyclic group;

Two or more of R ₃₁ to R ₃₄ , R _35a , R _35b , R _36a , R _36b , R _37a , R _37b , R _38a , and R _38b , optionally bonded to each other, are substituted or unsubstituted with at least one R _10a . may form a cyclic C ₅ -C ₃₀ carbocyclic group or a substituted or unsubstituted C ₁ -C ₃₀ heterocyclic group with at least one R _10a ;

For the description of R _10a , refer to the description of R ₃₁ ,

* and *' are binding sites with neighboring atoms, respectively;

The substituted C ₁ -C ₆₀ alkyl group, the substituted C ₂ -C ₆₀ alkenyl group, the substituted C ₂ -C ₆₀ alkynyl group, the substituted C ₁ -C ₆₀ alkoxy group, the substituted C ₃ -C ₁₀ cycloalkyl group, A substituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted C ₆ -C ₆₀ aryl group, a substituted C ₇ -C ₆₀ alkylaryl group, substituted C ₆ -C ₆₀ aryloxy group, substituted C ₆ -C ₆₀ arylthio group, substituted C ₁ -C ₆₀ heteroaryl group, substituted C ₂ -C ₆₀ alkylheteroaryl group, Substituents of the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic heterocondensed polycyclic group,

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky a yl group or a C ₁ -C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, Monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Si(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or any thereof a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, or a C ₁ -C ₆₀ alkoxy group, substituted with a combination of;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky Nyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=0)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ), or a C ₃ -C ₁₀ cycloalkyl group unsubstituted or substituted with any combination thereof, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ aryl group an organic group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed polycyclic group;

-N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=0)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or

any combination thereof;

ego,

The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; or a monovalent non-aromatic heterocondensed polycyclic group;

According to one embodiment, M in Chemical Formula 3 may be Pt, Pd, or Au.

According to another embodiment, the bond between X ₁₁ and M in Formula 3 may be a coordinate bond.

According to another embodiment, X ₁₁ in Formula 3 is C, and the bond between X ₁₁ and M may be a coordinate bond. That is, X ₁₁ in Formula 3 may be C in a carbene moiety.

According to another embodiment, ring CY ₃₁ to ring CY ₃₄ in Formula 3 are each independently: i) a first ring, ii) a second ring, iii) a condensed ring in which two or more first rings are condensed with each other; iv) a condensed ring in which two or more second rings are condensed with each other, or v) a condensed ring in which one or more first rings and one or more second rings are condensed with each other;

The first ring is a cyclopentane group, a cyclopentadiene group, a furan group, a thiophene group, a pyrrole group, a silol group, an oxazole group, an isoxazole group, an oxadiazole group, an isoxadiazole group, an oxatriazole group, Isoxatriazole group, thiazole group, isothiazole group, thiadiazole group, isothiadiazole group, thiatriazole group, isothiatriazole group, pyrazole group, imidazole group, triazole group, tetra A sol group, an azacylol group, a diazacylol group or a triazacylol group,

The second ring is an adamantane group, a norbornane group, a norbornene group, a cyclohexane group, a cyclohexene group, a benzene group, a pyridine group, a pyrimidine group, a pyrazine group, and a pyridazine group. , a triazine group, an oxazine group, a thiazine group, a dihydropyrazine group, a dihydropyridine group, or a dihydroazasilane group.

According to one embodiment, according to one embodiment, R ₃₁ to R ₃₄ , R _35a , R _35b , R _36a , R _36b , R _37a , R _37b , R _38a , and R _38b are independently of each other,

Hydrogen, deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , cyano group (CN), nitro group , an amino group, a C ₁ -C ₂₀ alkyl group, or a C ₁ -C ₂₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , cyano group (CN), nitro group, amino group , and a C ₁ -C ₂₀ alkyl group substituted with at least one of a phenyl group, or a C ₁ -C ₂₀ alkoxy group; or

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH _2, cyano group (CN), nitro group, amino group , C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, naphthyl group, flue A cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group, a phenyl group, a biphenyl group, naph It may be a ethyl group, a fluorenyl group, a phenanthrenyl group, or an anthracenyl group.

According to another embodiment, the third compound may be a phosphorescent dopant compound represented by Formula 5 below:

<Formula 5>

M(L ₅₁ ) _n51 (L ₅₂ ) _n52

M in Chemical Formula 5 may be a transition metal.

For example, M may be a 1-period transition metal, a 2-period transition metal, or a 3-period transition metal.

As another example, M is iridium (Ir), platinum (Pt), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), thulium ( Tm) or rhodium (Rh).

According to one embodiment, M may be Ir, Pt, Os or Rh.

In Formula 5, L ₅₁ may be a ligand represented by Formula 5A below, and L ₅₂ may be a ligand represented by Formula 5B below:

<Formula 5A> <Formula 5B>

　　　　　　　　　

　　　　　　　　　

For descriptions of Chemical Formulas 5A and 5B, refer to the respective descriptions herein.

In Formula 5, n51 is 1, 2, or 3, and when n51 is 2 or more, two or more L ₅₁ 's may be the same as or different from each other.

In Formula 5, n52 is 0, 1, or 2, and when n52 is 2, two L ₅₂ 's may be identical to or different from each other.

In Formula 5, the sum of n51 and n52 may be 2 or 3. For example, the sum of n51 and n52 may be 3.

According to one embodiment, in Formula 5, i) M is Ir, and n51 + n52 is 3; or ii) M may be Pt, and n51 + n52 may be 2.

According to another embodiment, M in Formula 5 may be Ir, i) n51 is 1 and n52 is 2, or ii) n51 is 2 and n52 is 1.

In Formula 5, L ₅₁ and L ₅₂ may be different from each other.

Y ₅₁ to Y ₅₄ in Formulas 5A to 5B may be each independently C or N. For example, each of Y ₅₁ and Y ₅₃ may be N, and each of Y ₅₂ and Y ₅₄ may be C.

Ring CY ₅₁ to ring CY ₅₄ in Formulas 5A and 5B may be each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group.

For example, in Formulas 5A and 5B, ring CY ₅₁ to ring CY ₅₄ are each independently selected from i) a third ring, ii) a fourth ring, iii) a condensed ring in which two or more third rings are condensed with each other, iv ) a condensed ring in which two or more fourth rings are condensed with each other or v) a condensed ring in which one or more third rings and one or more fourth rings are condensed with each other,

The third ring is a cyclopentane group, a cyclopentene group, a furan group, a thiophene group, a pyrrole group, a silol group, a borole group, a phosphole group, a low mole group, a selenophene group, an oxazole group, an oxadiazole group, an oxa group, a triazole group, a thiazole group, a thiadiazole group, a thiatriazole group, a pyrazole group, an imidazole group, a triazole group, a tetrazole group, or an azasilol group;

The fourth ring is adamantane group, norbornane group, norbornene group, cyclohexane group, cyclohexene group, benzene group, pyridine group, pyrimidine group, pyrazine group, pyridazine group or a triazine group.

As another example, in Formulas 5A and 5B, ring CY ₁ to ring CY ₄ may each independently be selected from a cyclopentane group, a cyclohexane group, a cyclohexene group, a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, Triphenylene group, pyrene group, Chrysene group, 1,2,3,4-tetrahydronaphthalene group, cyclopentadiene group, pyrrole group, furan group, thiophene group, silol group, borol group, phosphole group, low molar group, selenophene group, indene group, indole group, benzofuran group, benzothiophene group, benzosilol group, benzoborol group, benzophosphole group, benzolow molar group , benzoselenophene group, fluorene group, carbazole group, dibenzofuran group, dibenzothiophene group, dibenzosilol group, dibenzoborol group, dibenzophosphole group, dibenzozermol group, dibenzoselenophene group, benzofluorene group, benzocarbazole group, naphthobenzofuran group, naphthobenzothiophene group, naphthobenzosilol group, naphthobenzoborol group, naphthobenzophosphole group, naphthobenzozermol group, Naphthobenzoselenophene group, dibenzofluorene group, dibenzocarbazole group, dinaphthofuran group, dinaphthothiophene group, dinaphthosylol group, dinaphthoborol group, dinaphthophosphole group, dinaphthozermol group, dinaphthoselenophene group, indenophenanthrene group, indolophenanthrene group, phenanthrobenzofuran group, phenanthrobenzothiophene group, phenanthrobenzosilol group, phenanthrobenzoborol group, phenanthrobenzophosphole group, phenanthrobenzozermol group, phenanthrobenzoselenophene group, dibenzothiophene 5-oxide group, 9H-fluorene-9-one group, dibenzothiophene 5, 5-dioxide group, azaindene group, azaindole group, azabenzofuran group, azabenzothiophene group, azabenzosilol group, azabenzoborol group, azabenzophosphole group, azabenzozermol group, azabenzoselenophene group, azafluorene group, azacarbazole group, azadibenzofuran group, azadibenzothio Pen group, azadibenzosylol group, azadibenzoborol group, azadibenzophosphole group, azadibenzozermol group, azadibenzoselenophene group, azabenzofluorene group, azabenzocarbazole group, azanaphtho Benzofuran group, azanaphthobenzothiophene group, azanaphthobenzosilol group, azanaphthobenzoborol group, azanaphthobenzophosphole group, azanaphthobenzozermol group, azanaphthobenzoselenophene group, aza Dibenzofluorene group, azadibenzocarbazole group, azadinaphthofuran group, azadinaphthothiophene group, azadinaphthosylol group, azadinaphthoborol group, azadinaphthophosphole group, azadinaphthozermol group, azadinaphthoselenophene group, azaindenophenanthrene group, azaindolophenanthrene group, azaphenanthrobenzofuran group, azaphenanthrobenzothiophene group, azaphenanthrobenzosilol group , Azaphenanthrobenzoborol group, azaphenanthrobenzophosphole group, azaphenanthrobenzolowerol group, azaphenanthrobenzoselenophene group, azadibenzothiophene 5-oxide group, aza9H-fluorene -9-one group, azadibenzothiophene 5,5-dioxide group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group, quinazoline group , benzoquinoline group, benzoisoquinoline group, benzoquinoxaline group, benzoquinazoline group, phenanthroline group, phenanthridine group, pyrrole group, pyrazole group, imidazole group, triazole group, oxazole group, iso oxazole group, thiazole group, isothiazole group, oxadiazole group, thiadiazole group, azasilol group, azaborol group, azaphosphole group, azazermol group, azaselenophen group, benzopyrrole group, benzo Pyrazole group, benzimidazole group, benzoxazole group, benzisoxazole group, benzothiazole group, benzisothiazole group, benzoxadiazole group, benzothiadiazole group, pyridinopyrrole group, pyridinopyra sol group, pyridinoimidazole group, pyridinooxazole group, pyridinoisoxazole group, pyridinothiazole group, pyridinoisothiazole group group, pyridinooxadiazole group, pyridinothiadiazole group, pyrimidinopyrrole group, pyrimidinopyrazole group, pyrimidinoimidazole group, pyrimidinooxazole group, pyrimidinoisoxazole group, pyr Midinothiazole group, pyrimidinoisothiazole group, pyrimidinoxadiazole group, pyrimidinothiadiazole group, 5,6,7,8-tetrahydroisoquinoline (5,6,7,8-tetrahydroisoquinoline) group, 5,6,7,8-tetrahydroquinoline (5,6,7,8-tetrahydroquinoline), adamantane group, norbornane group, norbornene group, cyclohexane group It may be a condensed benzene group, a benzene group condensed with a norbornane group, a pyridine group condensed with a cyclohexane group, or a pyridine group condensed with a norbornane group.

For example, in Chemical Formulas 5A and 5B, ring CY ₅₁ and ring CY ₅₃ may be different from each other.

As another example, in Chemical Formulas 5A and 5B, ring CY ₅₂ and ring CY ₅₄ may be different from each other.

As another example, each of ring CY ₅₁ to ring CY ₅₄ in Formulas 5A and 5B may be different from each other.

In Formulas 5A and 5B, R ₅₁ to R ₅₄ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amino group, and an amidino group. group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, substituted or unsubstituted C ₁ -C ₆₀ alkyl group, substituted or unsubstituted C ₂ -C ₆₀ alkenyl group , substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₁ -C ₆₀ alkylthio group, substituted or unsubstituted C ₃ -C ₁₀ Cycloalkyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted cyclic C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₅₁ )(Q ₅₂ ), -Si(Q ₅₃ )(Q ₅₄ )(Q ₅₅ ), -Ge(Q ₅₃ )(Q ₅₄ )(Q ₅₅ ), -B(Q ₅₆ )(Q ₅₇ ), -P(=0)(Q ₅₈ )(Q ₅₉ ), or - It may be P(Q ₅₈ )(Q ₅₉ ). Descriptions of the above Q ₅₁ to Q ₅₉ refer to the respective descriptions herein.

According to one embodiment, R ₅₁ to R ₅₄ in Formulas 5A and 5B are independently of each other,

Hydrogen, heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof , a phosphoric acid group or a salt thereof, -SF ₅ , a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group or a C ₁ -C ₂₀ alkylthio group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₁₀ Alkyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclo Octyl group, adamantanyl group, norbornanyl group, norbornenyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, bicyclo[1.1.1]pentyl group, bicyclo[2.1.1]hexyl group, bicyclo [2.2.2] octyl group, (C ₁ -C ₂₀ alkyl) cyclopentyl group, (C ₁ -C ₂₀ alkyl) cyclohexyl group, (C ₁ -C ₂₀ alkyl) cycloheptyl group, (C ₁ -C ₂₀ Alkyl) cyclooctyl group, (C ₁ -C ₂₀ Alkyl) adamantanyl group, (C ₁ -C ₂₀ Alkyl) norbornanyl group, (C ₁ -C ₂₀ Alkyl) norbornenyl group, (C ₁ -C ₂₀ Alkyl) Cyclopentenyl group, (C ₁ -C ₂₀ alkyl)cyclohexenyl group, (C ₁ -C ₂₀ alkyl)cycloheptenyl group, (C ₁ -C ₂₀ alkyl)bicyclo[1.1.1]pentyl group, (C ₁ -C ₂₀ Alkyl)bicyclo[2.1.1]hexyl group, (C ₁ -C ₂₀ Alkyl)bicyclo[2.2.2]octyl group, phenyl group, (C ₁ -C ₂₀ Alkyl)phenyl group, biphenyl group, terphenyl group , a C ₁ -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, or a C ₁ -C ₂₀ alkylthio group, substituted with a naphthyl group, a pyridinyl group, a pyrimidinyl group, or any combination thereof;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₂₀ alkyl group, (phenyl)C ₁ -C ₁₀ alkyl group, C ₁ - C ₂₀ alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbonanyl group, norbornenyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, bicyclo[1.1 .1] pentyl group, bicyclo [2.1.1] hexyl group, bicyclo [2.2.2] octyl group, (C ₁ -C ₂₀ alkyl) cyclopentyl group, (C ₁ -C ₂₀ alkyl) cyclohexyl group, (C ₁ -C ₂₀ Alkyl) cycloheptyl group, (C ₁ -C ₂₀ Alkyl) cyclooctyl group, (C ₁ -C ₂₀ Alkyl) adamantanyl group, (C ₁ -C ₂₀ Alkyl) norbonanyl group, (C ₁ -C ₂₀ Alkyl) norbornenyl group, (C ₁ -C ₂₀ Alkyl) cyclopentenyl group, (C ₁ -C ₂₀ Alkyl) cyclohexenyl group, (C ₁ -C ₂₀ Alkyl) cycloheptenyl group, (C ₁ -C ₂₀ Alkyl)bicyclo[1.1.1]pentyl group, (C ₁ -C ₂₀ Alkyl)bicyclo[2.1.1]hexyl group, (C ₁ -C ₂₀ Alkyl)bicyclo[2.2.2]octyl group , Phenyl group, (C ₁ -C ₂₀ alkyl)phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyrida Zinyl group, isoindoleyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, carbazolyl group, phenanthrolinyl group , Benzoimidazolyl group, benzofuranyl group, benzothiophenyl group, benzoisothiazolyl group, benzooxazolyl group, benzoisoxazolyl group, Triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, An azacarbazolyl group, an azadibenzofuranyl group, an azadibenzothiophenyl group, or a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, an adamantanyl group, a substituted or unsubstituted group with any combination thereof, A bornanyl group, a norbornenyl group, a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group, a bicyclo[1.1.1]pentyl group, a bicyclo[2.1.1]hexyl group, a bicyclo[2.2.2]octyl group, Phenyl group, (C ₁ -C ₂₀ alkyl)phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group , Pyrroyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindoleyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, carbazolyl group, phenanthrolinyl group, Benzoimidazolyl group, benzofuranyl group, benzothiophenyl group, benzoisothiazolyl group, benzooxazolyl group, benzoisoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group , A dibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, an azacarbazolyl group, an azadibenzofuranyl group or an azadibenzothiophenyl group; or

-N(Q ₅₁ )(Q ₅₂ ), -Ge(Q ₅₃ )(Q ₅₄ )(Q ₅₅ ), -B(Q ₅₆ )(Q ₅₇ ), -P(=O)(Q ₅₈ )(Q ₅₉ ) or -P(Q ₅₈ )(Q ₅₉ );

ego,

Q ₅₁ to Q ₅₉ are independently of each other;

-CH ₃ , -CD ₃ , -CD ₂ H, -CDH ₂ , -CH ₂ CH ₃ , -CH ₂ CD ₃ , -CH ₂ CD ₂ H, -CH ₂ CDH ₂ , -CHDCH ₃ , -CHDCD ₂ H , -CHDCDH ₂ , -CHDCD ₃ , -CD ₂ CD ₃ , -CD ₂ CD ₂ H or -CD ₂ CDH ₂ ; or

Deuterium, C ₁ -C ₁₀ Alkyl group, phenyl group, or unsubstituted or substituted with any combination thereof, n -propyl group, isopropyl group, n -butyl group, sec -butyl group, isobutyl group, tert -butyl group , n -pentyl group, tert -pentyl group, neopentyl group, isopentyl group, sec -pentyl group, 3-pentyl group, sec -isopentyl group, phenyl group, biphenyl group or naphthyl group;

can be

According to another embodiment, the R ₅₁ to R ₅₄ are independently of each other,

hydrogen, deuterium, -F, or a cyano group;

Deuterium, cyano group, C ₃ -C ₁₀ cycloalkyl group, deuterated C ₃ -C ₁₀ cycloalkyl group, fluorinated C ₃ -C ₁₀ cycloalkyl group, (C ₁ -C ₂₀ alkyl)C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, deuterated C ₁ -C ₁₀ heterocycloalkyl group, fluorinated C ₁ -C ₁₀ heterocycloalkyl group, (C ₁ -C ₂₀ alkyl)C ₁ -C ₁₀ heterocycloalkyl group, phenyl group, deuterated phenyl group , fluorinated phenyl group, (C ₁ -C ₂₀ alkyl) phenyl group, biphenyl group, deuterated biphenyl group, fluorinated biphenyl group, (C ₁ -C ₂₀ alkyl) biphenyl group, dibenzofuranyl group, deuterated dibenzofuranyl group, fluorinated A dibenzofuranyl group, a (C ₁ -C ₂₀ alkyl)dibezofuranyl group, a dibenzothiophenyl group, a deuterated dibenzothiophenyl group, a fluorinated dibenzothiophenyl group, a (C ₁ -C ₂₀ alkyl)dibenzothiophenyl group, or A substituted or unsubstituted C ₁ -C ₂₀ alkyl group in any combination thereof;

Deuterium, cyano group, C ₁ -C ₂₀ alkyl group, deuterated C ₁ -C ₂₀ alkyl group, fluorinated C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, deuterated C ₁ -C ₂₀ alkoxy group, fluorinated C ₁ -C ₂₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, deuterated C ₃ -C ₁₀ cycloalkyl group, fluorinated C ₃ -C ₁₀ cycloalkyl group, (C ₁ -C ₁₀ alkyl)C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, deuterated C ₁ -C ₁₀ heterocycloalkyl group, fluorinated C ₁ -C ₁₀ heterocycloalkyl group, (C ₁ -C ₂₀ alkyl)C ₁ -C ₁₀ heterocycloalkyl group, phenyl group, deuterated A phenyl group, a fluorinated phenyl group, a (C ₁ -C ₂₀ alkyl)phenyl group, a biphenyl group, a deuterated biphenyl group, a fluorinated biphenyl group, a (C ₁ -C ₂₀ alkyl)biphenyl group, a dibenzofuranyl group, a deuterated dibenzofuranyl group, A fluorinated dibenzofuranyl group, a (C ₁ -C ₂₀ alkyl) dibezofuranyl group, a dibenzothiophenyl group, a deuterated dibenzothiophenyl group, a fluorinated dibenzothiophenyl group, a (C ₁ -C ₂₀ alkyl) dibenzothiophenyl group, or a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a C ₁ -C ₁₀ heterocycloalkyl group, a phenyl group, or a biphenyl group, which is substituted or unsubstituted with any combination thereof; or

-Si(Q ₅₃ )(Q ₅₄ )(Q ₅₅ ) or -Ge(Q ₅₃ )(Q ₅₄ )(Q ₅₅ );

can be

Each of b51 to b54 in Formulas 5A and 5B represents the number of R ₅₁ to R ₅₄ , and may be independently an integer of 0 to 20. When b51 is 2 or more, two or more R _51s are the same or different, and when b52 is 2 or more, two or more R _52s are the same or different, and when b53 is 2 or more, two or more R _53s are the same or different. , When b54 is 2 or more, two or more R ₅₄ may be the same as or different from each other. For example, b51 to b54 may be each independently an integer of 0 to 8.

According to one embodiment, the third compound may be selected from the following compounds P1 to P42:

According to one embodiment, the third compound may be included in an amount of 0 to 20% by weight in the light emitting layer.

[Fourth compound]

As described above, the fourth compound is a polycyclic compound and may be a thermally activated delayed fluorescence dopant. The fourth compound may be a blue dopant.

According to another embodiment, the fourth compound is a polycyclic compound and may be a sensorizer compound used together with other light emitting dopants to transfer excitons transferred from the host to the light emitting dopant.

According to one embodiment, the fourth compound may be a polycyclic compound represented by Formula 4 below:

<Formula 4>

In Formula 4,

Z is B or N;

rings CY ₄₁ to CY ₄₃ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;

Y ₄₁ is *-N(R ₄₄ )-*', *-B(R ₄₄ )-*', *-P(R ₄₄ )-*', *-C(R ₄₄ )(R ₄₅ )-*' , *-Si(R ₄₄ )(R ₄₅ )-*', *-Ge(R ₄₄ )(R ₄₅ )-*', *-O-*', *-S-*', *-Se-* ', *-C(=O)-*', or *-S(=O) ₂ -*',

Y ₄₂ is *-N(R ₄₆ )-*', *-B(R ₄₆ )-*', *-P(R ₄₆ )-*', *-C(R ₄₆ )(R ₄₇ )-*' , *-Si(R ₄₆ )(R ₄₇ )-*', *-Ge(R ₄₆ )(R ₄₇ )-*', *-O-*', *-S-*', *-Se-* ', *-C(=O)-*', or *-S(=O) ₂ -*',

Y ₄₃ is *-N(R ₄₈ )-*', *-B(R ₄₈ )-*', *-P(R ₄₈ )-*', *-C(R ₄₈ )(R ₄₉ )-*' , *-Si(R ₄₈ )(R ₄₉ )-*', *-Ge(R ₄₈ )(R ₄₉ )-*', *-O-*', *-S-*', *-Se-* ', *-C(=O)-*', or *-S(=O) ₂ -*',

b41 to b43 are each independently 0 or 1;

*270 If b41 is 0, Y ₄₁ does not exist, if b42 is 0, Y ₄₂ does not exist, if b43 is 0, Y ₄₃ does not exist,

R ₄₁ to R ₄₉ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrazone group, and a carboxylic acid group. A substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ - C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ Cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₇ -C ₆₀ alkylaryl group , A substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted C ₂ -C ₆₀ Alkylheteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Si (Q ₃ )(Q ₄ )(Q ₅ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=O)(Q ₈ )( Q ₉ ), or -P(Q ₈ )(Q ₉ );

a41 to a43 are each independently an integer of 0 to 20;

Two or more of a41 R ₄₁ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b or a substituted or unsubstituted group with at least one R _10b can form a C ₁ -C ₃₀ heterocyclic group;

Two or more of a42 R ₄₂ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b or a substituted or unsubstituted group with at least one R _10b can form a C ₁ -C ₃₀ heterocyclic group;

Two or more of a43 R ₄₃ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b substituted or unsubstituted with at least one R _10b can form a C ₁ -C ₃₀ heterocyclic group;

Two or more of R ₄₁ to R ₄₉ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b or C ₁ unsubstituted or substituted with at least one R _10b . -C ₃₀ can form a heterocyclic group;

For the description of R _10b , refer to the description of R ₄₁ ,

* and *' are binding sites with neighboring atoms, respectively;

The substituted C ₁ -C ₆₀ alkyl group, the substituted C ₂ -C ₆₀ alkenyl group, the substituted C ₂ -C ₆₀ alkynyl group, the substituted C ₁ -C ₆₀ alkoxy group, the substituted C ₃ -C ₁₀ cycloalkyl group, A substituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted C ₆ -C ₆₀ aryl group, a substituted C ₇ -C ₆₀ alkylaryl group, substituted C ₆ -C ₆₀ aryloxy group, substituted C ₆ -C ₆₀ arylthio group, substituted C ₁ -C ₆₀ heteroaryl group, substituted C ₂ -C ₆₀ alkylheteroaryl group, Substituents of the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic heterocondensed polycyclic group,

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky a yl group or a C ₁ -C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, Monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Si(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or any thereof a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, or a C ₁ -C ₆₀ alkoxy group, substituted with a combination of;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky Nyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=0)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ), or a C ₃ -C ₁₀ cycloalkyl group unsubstituted or substituted with any combination thereof, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ aryl group an organic group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed polycyclic group;

-N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=0)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or

any combination thereof;

ego,

The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; or a monovalent non-aromatic heterocondensed polycyclic group;

According to one embodiment, R ₄₁ to R ₄₉ are independently of each other,

hydrogen, heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group (CN), a nitro group, an amino group, a C ₁ -C ₆₀ alkyl group, or a C ₁ -C ₆₀ alkoxy group;

Heavy hydrogen, -F, -Cl, -Br, -I, hydroxyl group, cyano group (CN), nitro group, amino group, phenyl group, biphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoro a C ₁ -C ₆₀ alkyl group, or a C ₁ -C ₆₀ alkoxy group substituted with at least one of a lanthenyl group, a triphenylenyl group, a pyrenyl group, and a chrysenyl group; or

*290 heavy hydrogen, -F, -Cl, -Br, -I, hydroxyl group, cyano group (CN), nitro group, amino group, C ₁ -C ₆₀ alkyl group, C ₁ -C ₆₀ alkoxy group, cyclopentyl group, Cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group , pyrenyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group , Pyrimidinyl group, pyridazinyl group, isoindoleyl group, indoleyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, Phenanthrolinyl group, benzoimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzooxazolyl group, isobenzooxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group , A cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group, a phenyl group, Biphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyra Zolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindoleyl group, indolyl group, indazolyl group, purinyl group , Quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cynolinyl group, phenanthrolinyl group, benzoimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, A benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, or a carbazolyl group; may be.

According to one embodiment, Formula 4 may be selected from Formulas 4-1 to 4-8 below:

<Formula 4-1>

<Formula 4-2>

<Formula 4-3>

<Formula 4-4>

<Formula 4-5>

<Formula 4-6>

<Formula 4-7>

<Formula 4-8>

In Chemical Formulas 4-1 to 4-8,

Each of Z ₁ and Z ₂ refers to the description of Z in this specification,

Y ₄₁ and Y ₄₂ refer to the description herein,

Y ₄₄ and Y ₄₅ refer to the description of Y ₄₁ and Y ₄₂ in the present specification, respectively,

R ₄₁₁ refers to the description of R ₄₁ in this specification, R ₄₂₁ refers to the description of R ₄₂ in this specification, R _{431 and} R ₄₃₂ each refers to the description of R ₄₃ in this specification, R ₄₄₁ refers to the description of R ₄₁ in this specification, R ₄₅₁ refers to the description of R ₄₂ in this specification, R ₄₆₁ refers to the description of R ₄₃ in this specification,

a411 is an integer selected from 0 to 4;

a421 is an integer selected from 0 to 3;

a431 is an integer selected from 0 to 4;

a441 is an integer selected from 0 to 4;

a451 is an integer selected from 0 to 3;

a461 is an integer selected from 0 to 4.

According to one embodiment, the fourth compound may be selected from the following compounds D1 to D30:

According to one embodiment, the fourth compound may be included in the light emitting layer in an amount of 0 to 5% by weight.

[Organic light emitting element]

According to one aspect, the first electrode; a second electrode facing the first electrode; and an intermediate layer interposed between the first electrode and the second electrode and comprising a first compound and a second compound, wherein the first compound comprises a first silyl group-containing group and two carbazole-derived groups. Including, wherein one carbazole-derived group of the two carbazole-derived groups is bonded through the N atom of the other carbazole-derived group, and the second compound is a second silyl group-containing group, tree An organic light emitting device may include an azine group and a carbazole-derived group, and at least one of the first compound and the second compound has a triplet energy level (T1) of 2.81 eV or more.

According to another aspect, the first electrode; a second electrode facing the first electrode; and an intermediate layer interposed between the first electrode and the second electrode and having a light emitting layer including a first compound, a second compound, and a third compound, wherein the first compound comprises a first silyl group-containing group and It includes two carbazole-derived groups, wherein one carbazole-derived group of the two carbazole-derived groups is bonded through the N atom of the other carbazole-derived group, and the second compound is An organic light-emitting device including a 2-silyl group-containing group, a triazine group, and a carbazole-derived group, and the third compound including an organo-metallic compound represented by Chemical Formula 3 may be provided.

According to another aspect, the first electrode; a second electrode facing the first electrode; and an intermediate layer interposed between the first electrode and the second electrode and having a light emitting layer including a first compound, a second compound, and a fourth compound, wherein the first compound comprises a first silyl group-containing group and It includes two carbazole-derived groups, wherein one carbazole-derived group of the two carbazole-derived groups is bonded through the N atom of the other carbazole-derived group, and the second compound is An organic light emitting device including a 2-silyl group-containing group, a triazine group, and a carbazole-derived group, and the fourth compound including a polycyclic compound represented by Chemical Formula 4 may be provided.

Here, the first compound, the second compound, the third compound, and the fourth compound, Formula 3 and Formula 4 refer to the above description.

As described above, the organic light emitting device may have high external quantum efficiency and high lifetime characteristics by providing a light emitting layer including the third compound or/and the fourth compound together with the first compound and the second compound. .

According to one embodiment, the first electrode; a second electrode facing the first electrode; and an intermediate layer interposed between the first electrode and the second electrode and having a light emitting layer including a first compound, a second compound, a third compound, and a fourth compound, wherein the first compound has a first silyl group. -containing group and two carbazole-derived groups, wherein one carbazole-derived group of the two carbazole-derived groups is bonded through the N atom of the other carbazole-derived group, and the The second compound includes a second silyl group-containing group, a triazine group, and a carbazole-derived group, the third compound includes an organo-metal compound represented by the above-mentioned formula (3), and the fourth compound is An organic light emitting device including the polycyclic compound represented by Formula 4 may be provided.

In this case, the third compound functions as a sensorizer and the fourth compound functions as a light emitting dopant, so that the sensorizer compound may receive excitons from the first compound and the second compound and transfer the excitons to the light emitting dopant.

According to one embodiment, excitons from the sensorizer are transferred to the light emitting dopant compound through a Dexter energy transfer (DET) or Forster resonance energy transfer (FRET) mechanism, and to the light emitting dopant compound The transferred exciton energy may emit light while transitioning to a ground state. In this case, excitons of the sensorizer may be transferred from the host compound through a FRET mechanism, or excitons generated from the host may be transferred through a DET mechanism.

Accordingly, energy transfer between the sensorizer and the light emitting dopant by FRET and DET mechanisms is facilitated, and triplet-triplet annihilation is suppressed, thereby facilitating manufacturing of an organic light emitting device with high efficiency.

The first compound, the second compound, the third compound, and the fourth compound may be used between a pair of electrodes of the organic light emitting device. For example, the first compound, the second compound, the third compound, and the fourth compound may be included in the light emitting layer. In this case, the first compound and the second compound may serve as a host, and may further include a third compound and a fourth compound as a dopant or a sensorizer (ie, the total content of the first compound and the second compound is the third compound). greater than the total content of the compound and the fourth compound). The light emitting layer may emit, for example, blue light.

According to one embodiment, the light emitting layer may include a host and a dopant, and the host may include two different host compounds. The host may include a hole-transporting host compound and an electron-transporting host compound, wherein the first compound is a hole-transporting host compound and the second compound is an electron-transporting host compound.

According to another embodiment, blue light may be emitted from the light emitting layer.

The dopant may be a fluorescent dopant or a phosphorescent dopant. For example, the phosphorescent dopant may include the aforementioned third compound, and the fluorescent dopant may include the aforementioned fourth compound.

The first electrode is an anode that is a hole injection electrode and the second electrode is a cathode that is an electron injection electrode, or the first electrode is a cathode that is an electron injection electrode and the second electrode is an anode that is a hole injection electrode.

For example, in the organic light emitting device, the first electrode is an anode, the second electrode is a cathode, and the intermediate layer includes a hole transport region disposed between the first electrode and the light emitting layer and the light emitting layer and the second electrode. It further includes an electron transport region disposed therebetween, wherein the hole transport region includes a hole injection layer, a hole transport layer, an electron blocking layer, an auxiliary layer, or any combination thereof, wherein the electron transport region comprises a buffer layer, a hole blocking layer, or any combination thereof. layer, electron transport layer, electron injection layer, or any combination thereof.

In the present specification, "intermediate layer" is a term indicating a single layer and/or a plurality of layers disposed between the first electrode and the second electrode in an organic light emitting device. The "intermediate layer" may include not only organic compounds, but also organometallic complexes including metals.

Description of Figure 1

1 is a schematic cross-sectional view of an organic light emitting diode 10 according to an embodiment of the present invention. Hereinafter, a structure and manufacturing method of an organic light emitting device according to an embodiment of the present invention will be described with reference to FIG. 1 .

The organic light emitting device 10 of FIG. 1 includes a first electrode 11, a second electrode 19 opposite to the first electrode 11, and a space between the first electrode 11 and the second electrode 19. It includes an intermediate layer (10A) disposed on.

The intermediate layer 10A includes a light emitting layer 15, a hole transport region 12 is disposed between the first electrode 11 and the light emitting layer 15, and the light emitting layer 15 and the second electrode An electron transport region 17 is disposed between (19).

A substrate may be additionally disposed below the first electrode 11 or above the second electrode 19 . As the substrate, a substrate used in a conventional organic light emitting device may be used, and a glass substrate or a transparent plastic substrate having excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and water resistance may be used.

[First electrode 11]

The first electrode 11 may be formed, for example, by providing a material for the first electrode on a substrate using a deposition method or a sputtering method. The first electrode 11 may be an anode. The material for the first electrode may include a material having a high work function to facilitate hole injection.

The first electrode 11 may be a reflective electrode, a transflective electrode, or a transmissive electrode. In order to form the first electrode 11, which is a transmissive electrode, the material for the first electrode is indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO ₂ ), zinc oxide (ZnO), or Any combination may be included. Alternatively, in order to form the first electrode 110, which is a transflective electrode or a reflective electrode, the material for the first electrode is magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li) ), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), or any combination thereof.

The first electrode 11 may have a single-layer structure or a multi-layer structure including two or more layers.

[Light emitting layer 15]

The light emitting layer 15 may have a thickness of about 100 Å to about 3000 Å, for example, about 100 Å to about 1000 Å, or about 200 Å to about 600 Å. When the thickness of the light emitting layer satisfies the aforementioned range, excellent light emitting characteristics may be exhibited without a substantial increase in driving voltage.

[Host in the light emitting layer 15]

The host in the emission layer 15 may include a hole-transporting host compound and an electron-transporting host compound having different structures.

For example, the hole-transporting host compound may include the aforementioned first compound, and the electron-transporting host compound may include the aforementioned second compound.

The host may not contain a transition metal.

[Dopant in the light emitting layer 15]

A dopant in the emission layer 15 may be a phosphorescent or fluorescent dopant.

For example, the phosphorescent dopant may include the aforementioned third compound, and the fluorescent dopant may include the aforementioned fourth compound.

The content (weight) of the dopant in the light emitting layer 15 may be 0.1 part by weight to 20 parts by weight per 100 parts by weight of the light emitting layer 15 .

[Hole transport region 12]

A hole transport region 12 is disposed between the first electrode 11 and the light emitting layer 15 of the organic light emitting device 10 .

The hole transport region 12 may have a single-layer or multi-layer structure.

For example, the hole transport region 12 may include a hole injection layer, a hole transport layer, a hole injection layer/hole transport layer, a hole injection layer/first hole transport layer/second hole transport layer, a hole injection layer/first hole transport layer/second hole transport layer, and the like. 2Hole transport layer/electron blocking layer, hole transport layer/intermediate layer, hole injection layer/hole transport layer/intermediate layer, hole transport layer/electron blocking layer, or hole injection layer/hole transport layer/electron blocking layer may have a structure.

The hole transport region 12 may include any compound having hole transport properties.

For example, the hole transport region 12 may include an amine-based compound.

According to one embodiment, the hole transport region 12 may include, for example, m-MTDATA, TDATA, 2-TNATA, NPB, β-NPB, TPD, Spiro-TPD, Spiro-NPB, methylated-NPB, TAPC, HMTPD, TCTA (4,4',4"-tris (N-carbazolyl)triphenylamine), Pani/DBSA (Polyaniline/Dodecylbenzenesulfonic acid: polyaniline/dodecylbenzenesulfonic acid), PEDOT/PSS (Poly(3,4-ethylenedioxythiophene)/Poly(4-styrenesulfonate): poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate)), Pani/CSA (Polyaniline/Camphor sulfonicacid: polyaniline/camphor sulfonic acid), PANI/PSS (Polyaniline)/Poly(4-styrenesulfonate): polyaniline)/poly(4-styrenesulfonate)), the compound represented by Formula 201 to the following One of the compounds represented by Formula 205, or any combination thereof:

<Formula 201>

<Formula 202>

<Formula 203>

<Formula 204>

<Formula 205>

In Chemical Formulas 201 to 205,

L ₂₀₁ to L ₂₀₉ are independently from each other, *-O-*', *-S-*', a substituted or unsubstituted C ₅ -C ₆₀ carbocyclic group, or a substituted or unsubstituted C ₁ -C ₆₀ hetero is a cyclic group,

xa1 to xa9 are each independently an integer of 0 to 5;

R ₂₀₁ to R ₂₀₆ are each independently a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, or a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group. , A substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or substituted or unsubstituted monovalent non-aromatic condensed polycyclic group And, R ₂₀₁ to R ₂₀₆ Two adjacent groups may optionally be connected to each other through a single bond, a dimethyl-methylene group or a diphenyl-methylene group.

for example,

L ₂₀₁ to L ₂₀₉ are deuterium, C ₁ -C ₁₀ alkyl group, C ₁ -C ₁₀ alkoxy group, phenyl group, naphthyl group, fluorenyl group, carbazolyl group, dibenzofuranyl group, dibenzothiophenyl group, triphenylene A benzene group, a heptalene group, an indene group, or a naphthalene group unsubstituted or substituted with a nyl group, a biphenyl group, a terphenyl group, a tetraphenyl group, -Si(Q ₁₁ )(Q ₁₂ )(Q ₁₃ ), or any combination thereof , Azulene group, heptalene group, indacene group, acenaphthylene group, fluorene group, spiro-bifluorene group, benzofluorene group, dibenzofluorene group, phenalene group, phenanthrene group, anthracene group, fluoranthene group, triphenylene group, pyrene group, chrysene group, naphthacene group, picene group, perylene group, pentacene group, hexacene group, pentacene group, rubicene group, corogen group , ovalene group, pyrrole group, isoindole group, indole group, furan group, thiophene group, benzofuran group, benzothiophene group, benzocarbazole group, dibenzocarbazole group, dibenzofuran group, dibenzothione Ofene group, dibenzothiophene sulfone group, carbazole group, dibenzosilol group, indenocarbazole group, indolocarbazole group, benzofurocarbazole group, benzothienocarbazole group or tri It may be an indolobenzene group,

xa1 to xa9 are each independently 0, 1 or 2;

R ₂₀₁ to R ₂₀₆ are each independently selected from deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, C ₁ -C ₂₀ Alkyl group, C ₁ -C ₂₀ Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, C ₁ -C ₁₀ A phenyl group substituted with an alkyl group , -F substituted phenyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl group, heptalenyl group, indacenyl group, acenaphthyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group , dibenzofluorenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group, perylenyl group, penta Phenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, ovalenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindoleyl group, benzofuranyl group, benzothiophenyl group, dibenzofura Nyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N(Q ₃₁ )(Q ₃₂ ), or substituted or unsubstituted with any combination thereof, phenyl group, biphenyl group, terphenyl group, pentalenyl group, indenyl group, naphthyl group, azulenyl group, heptalenyl group, indacenyl group, acenaphthyl group, flu Orenyl group, spiro-bifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, ovalenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, Isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridinyl group, indenocarbazolyl group, indolo A carbazolyl group, a benzofurocarbazolyl group or a benzothienocarbazolyl group,

The Q ₁₁ to Q ₁₃ and Q ₃₁ to Q ₃₃ may be each independently a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, or a naphthyl group.

According to one embodiment, the hole transport region 12 may include a carbazole-containing amine-based compound.

According to another embodiment, the hole transport region 12 may include a carbazole-containing amine-based compound and a carbazole-non-containing amine-based compound.

The carbazole-containing amine compound includes, for example, a carbazole group, a dibenzofuran group, a dibenzothiophene group, a fluorene group, a spiro-bifluorene group, an indenocarbazole group, It may include a compound represented by Chemical Formula 201, further including at least one of an indolocarbazole group, a benzofurocarbazole group, and a benzothienocarbazole group.

The carbazole-non-containing amine compound includes, for example, a dibenzofuran group, a dibenzothiophene group, a fluorene group, a spiro-bifluorene group, and indenocarbazole without a carbazole group. group, an indolocarbazole group, a benzofurocarbazole group, and a benzothienocarbazole group, including at least one of the compounds represented by Formula 201.

According to another embodiment, the hole transport region 12 may include the compound represented by Chemical Formula 201, the compound represented by Chemical Formula 202, or any combination thereof.

According to one embodiment, the hole transport region 12 may include a compound represented by Formula 201-1, 202-1 or 201-2, or any combination thereof:

<Formula 201-1>

<Formula 202-1>

<Formula 201-2>

Descriptions of L ₂₀₁ to L ₂₀₃ , L ₂₀₅ , xa1 to xa3, xa5, R ₂₀₁ and R ₂₀₂ in Formulas 201-1, 202-1 and 201-2 refer to what is described herein, respectively, and R ₂₁₁ to R ₂₁₃ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, C ₁ -C ₂₀ Alkyl group, C ₁ -C ₂₀ Alkoxy group, phenyl group, biphenyl group, terphenyl group, C ₁ -C ₁₀ Alkyl group substituted phenyl group, -F substituted phenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group , Dimethylfluorenyl group, diphenylfluorenyl group, triphenylenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindolyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothio It may be a phenyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, a dibenzosilolyl group, or a pyridinyl group.

For example, the hole transport region 12 may include one of the following compounds HT1 to HT39, or any combination thereof:

Meanwhile, the hole transport region 12 of the organic light emitting device 10 may further include a p-dopant. When the hole transport region 12 further includes a p-dopant, the hole transport region 12 may include a matrix (eg, at least one of compounds represented by Chemical Formulas 201 to 205) and p contained in the matrix. -Can have a structure including a dopant. The p-dopant may be uniformly or non-uniformly doped into the hole transport region 12 .

According to one embodiment, the LUMO energy level of the p-dopant may be -3.5eV or less.

The p-dopant may include a quinone derivative, a metal oxide, a cyano group-containing compound, or any combination thereof.

For example, the p-dopant,

quinone derivatives such as Tetracyanoquinodimethane (TCNQ), 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ), and F6-TCNNQ;

metal oxides such as tungsten oxide and molybdenum oxide;

HAT-CN (1,4,5,8,9,12-hexaazatriphenylene-hexacarbonitrile);

a compound represented by Formula 221; or

any combination thereof;

may include:

<Formula 221>

In Formula 221,

R ₂₂₁ to R ₂₂₃ are each independently a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, or a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group. , a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted monovalent group, A non-aromatic condensed polycyclic group or a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, wherein at least one substituent selected from R ₂₂₁ to R ₂₂₃ is a cyano group; -F; -Cl; -Br; -I; C ₁ -C ₂₀ alkyl group substituted with -F; C ₁ -C ₂₀ alkyl group substituted with -Cl; -C ₁ -C ₂₀ alkyl group substituted with Br; -I substituted C ₁ -C ₂₀ alkyl group; or any combination thereof;

The compound represented by Chemical Formula 221 may include, for example, the following compound HT-D2:

The hole transport region 12 may have a thickness of about 100 Å to about 10000 Å, for example, about 400 Å to about 2000 Å, and the light emitting layer 15 may have a thickness of about 100 Å to about 3000 Å, for example, about 300 Å to about 2000 Å. It may be about 1000 Å. When the thicknesses of the hole transport region 12 and the light emitting layer 15 satisfy the ranges described above, satisfactory hole transport characteristics and/or light emitting characteristics may be obtained without a substantial increase in driving voltage.

The hole transport region 12 may further include a buffer layer.

The buffer layer may serve to increase efficiency by compensating for an optical resonance distance according to a wavelength of light emitted from the light emitting layer.

The hole transport region 12 may further include an electron blocking layer. The electron blocking layer may include a known material such as mCP or DBFPO:

[Electron Transport Region (17)]

An electron transport region 17 is disposed between the light emitting layer 15 and the second electrode 19 of the organic light emitting device 10 .

The electron transport region 17 may have a single-layer or multi-layer structure.

For example, the electron transport region 17 may be an electron transport layer, an electron transport layer/electron injection layer, a buffer layer/electron transport layer, a hole blocking layer/electron transport layer, a buffer layer/electron transport layer/electron injection layer, or a hole blocking layer/electron transport layer/ It may have a structure of an electron injection layer. The electron transport region 17 may further include an electron control layer.

The electron transport region 17 may include a known electron transport material.

The electron transport region 17 (eg, a buffer layer, a hole blocking layer, an electron control layer, or an electron transport layer among the electron transport regions) includes at least one π electron deficient nitrogen-containing C ₁ -C ₆₀ cyclic group. It may contain metal-free compounds. For a description of the π-electron-deficient nitrogen-containing C ₁ -C ₆₀ cyclic group, refer to what has been described herein.

For example, the electron transport region 17 may include a compound represented by Chemical Formula 601 below.

<Formula 601>

[Ar ₆₀₁ ] _xe11 -[(L ₆₀₁ ) _xe1 -R ₆₀₁ ] _xe21

In Formula 601,

Ar ₆₀₁ and L ₆₀₁ are each independently a C ₅ -C ₆₀ carbocyclic group optionally substituted with at least one R _601a or a C ₁ -C ₆₀ heterocyclic group optionally substituted with at least one R _601a . ego,

xe11 is 1, 2 or 3;

xe1 is an integer from 0 to 5;

R _601a and R ₆₀₁ are each independently a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, or a substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group , A substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, -Si(Q ₆₀₁ )(Q ₆₀₂ )(Q ₆₀₃ ), -C(=O)(Q ₆₀₁ ), -S(=O) ₂ (Q ₆₀₁ ) or -P(=O)(Q ₆₀₁ )(Q ₆₀₂ ), and

Q ₆₀₁ to Q ₆₀₃ are each independently a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, or a naphthyl group;

xe21 is an integer from 1 to 5.

According to one embodiment, at least one of the xe11 Ar ₆₀₁ and xe21 R ₆₀₁ may include the π-electron deficient nitrogen-containing C ₁ -C ₆₀ cyclic group.

According to one embodiment, rings Ar ₆₀₁ and L ₆₀₁ in Formula 601 are each independently selected from deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydra Zino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -S (=O) ₂ (Q ₃₁ ), -P(=O)(Q ₃₁ )(Q ₃₂ ), or a benzene group, a naphthalene group, a fluorene group, a spiro- unsubstituted or substituted with any combination thereof. Non-fluorene group, benzofluorene group, dibenzofluorene group, phenalene group, phenanthrene group, anthracene group, fluoranthene group, triphenylene group, pyrene group, chrysene group, naphthacene group, picene group, perylene group, pentapene group, indenoanthracene group, dibenzofuran group, dibenzothiophene group, carbazole group, imidazole group, pyrazole group, thiazole group, isothiazole group, oxazole group , Isoxazole group, pyridine group, pyrazine group, pyrimidine group, pyridazine group, indazole group, purine group, quinoline group, isoquinoline group, benzoquinoline group, phthalazine group, naphthyridine group, quinoxaline group, Quinazoline group, sinoline group, phenanthridine group, acridine group, phenanthroline group, phenazine group, benzoimidazole group, isobenzothiazole group, benzoxazole group, isobenzoxazole group, tria It may be a sol group, tetrazole group, oxadiazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group or azacarbazole group,

The Q ₃₁ to Q ₃₃ may be each independently a C ₁ -C ₁₀ alkyl group, a C ₁ -C ₁₀ alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, or a naphthyl group.

In Formula 601, when xe11 is two or more, two or more Ar _601s may be connected to each other through a single bond.

According to another embodiment, Ar ₆₀₁ in Formula 601 may be an anthracene group.

According to another embodiment, the compound represented by 601 may be represented by Formula 601-1:

<Formula 601-1>

In Formula 601-1,

X ₆₁₄ is N or C (R ₆₁₄ ), X ₆₁₅ is N or C (R ₆₁₅ ), X ₆₁₆ is N or C (R ₆₁₆ ), at least one of X ₆₁₄ to X ₆₁₆ is N,

L ₆₁₁ to L ₆₁₃ are independently of each other, refer to the description of L ₆₀₁ above,

xe611 to xe613 are independent of each other, refer to the description of xe1 above,

R ₆₁₁ to R ₆₁₃ are independently of each other, refer to the description of R ₆₀₁ above,

R ₆₁₄ to R ₆₁₆ are each independently selected from hydrogen, heavy hydrogen, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, C ₁ It may be a -C ₂₀ alkyl group, a C ₁ -C ₂₀ alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, or a naphthyl group.

According to another embodiment, xe1 and xe611 to xe613 in Formulas 601 and 601-1 may be each independently 0, 1, or 2.

According to another embodiment, R ₆₀₁ and R ₆₁₁ to R ₆₁₃ in Formulas 601 and 601-1 are each independently selected from deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, or a nitro group. group, amidino group, hydrazino group, hydrazono group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-bifluorene Nyl group, benzofluorenyl group, dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, Pentacenyl group, thiophenyl group, furanyl group, carbazolyl group, indolyl group, isoindoleyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, Dibenzosilolyl group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidi Nyl group, pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, phenanthridinyl group , Acridinyl group, phenanthrolinyl group, phenazinyl group, benzoimidazolyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyridinyl group A phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, substituted or unsubstituted with a polyzopyrimidinyl group, an azacarbazolyl group, or any combination thereof, Dibenzofluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, perylenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, thiophenyl group, Furanyl group, carbazolyl group, indolyl group, isoindoleyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzosilolyl group, pyridi Nyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group , Phthalazinyl group, naphthyridinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, phenanthridinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzoimidazolyl group, isobenzothiazolyl group, A benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group or an azacarbazolyl group; or

-S(=0) ₂ (Q ₆₀₁ ) or -P(=0)(Q ₆₀₁ ) (Q ₆₀₂ );

ego,

The description of the above Q ₆₀₁ and Q ₆₀₂ refers to what is described herein.

The electron transport region 17 may include one of the following compounds ET1 to ET36, or any combination thereof:

Alternatively, the electron transport region 17 is BCP (2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline), Bphen (4,7-Diphenyl-1,10-phenanthroline), Alq ₃ , BAlq , TAZ (3-(Biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole), NTAZ, DBFPO, or any combination thereof. can For example, when the electron transport region 17 includes a hole blocking layer, the hole blocking layer may include BCP or Bphen.

The buffer layer, the hole blocking layer, or the electron control layer may each independently have a thickness of about 20 Å to about 1000 Å, for example, about 30 Å to about 300 Å. When the thickness of the buffer layer, the hole blocking layer, or the electron control layer satisfies the aforementioned range, excellent hole blocking characteristics or electron control characteristics may be obtained without a substantial increase in driving voltage.

The electron transport layer may have a thickness of about 100 Å to about 1000 Å, for example, about 150 Å to about 500 Å. When the thickness of the electron transport layer satisfies the aforementioned range, satisfactory electron transport characteristics may be obtained without a substantial increase in driving voltage.

The electron transport region 17 (eg, the electron transport layer of the electron transport region) may further include a metal-containing material in addition to the materials described above.

The metal-containing material may include an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The metal ion of the alkali metal complex may include Li ions, Na ions, K ions, Rb ions, Cs ions, or any combination thereof, and the metal ions of the alkaline earth metal complex may include Be ions, Mg ions, Ca ions, and Ca ions. ions, Sr ions, Ba ions, or any combination thereof. The ligands coordinated to the metal ions of the alkali metal complex and the alkaline earth metal complex are, independently of each other, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyl Oxazole, hydroxyphenylthiazole, hydroxydiphenyloxadiazole, hydroxydiphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzoimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline , cyclopentadiene, or any combination thereof.

For example, the metal-containing material may include a Li complex. The Li complex may include, for example, the following compound ET-D1 (Liq) or ET-D2.

The electron transport region 17 may include an electron injection layer that facilitates electron injection from the second electrode 19 . The electron injection layer may directly contact the second electrode 19 .

The electron injection layer has i) a single-layer structure made of a single layer made of a single material, ii) a single-layer structure made of a single layer made of a plurality of different materials, or iii) a multi-layer structure having a plurality of layers made of a plurality of different materials can have

The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

The alkali metal may include Li, Na, K, Rb, Cs, or any combination thereof. According to one embodiment, the alkali metal may be Li, Na or Cs. According to another embodiment, the alkali metal may be Li or Cs.

The alkaline earth metal may include Mg, Ca, Sr, Ba, or any combination thereof.

The rare earth metal may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

The alkali metal compound, the alkaline earth metal compound, and the rare earth metal compound may be oxides, halides (eg, fluoride, chloride, bromide, iodide, etc.), or any thereof, of the alkali metal, the alkaline earth metal, and the rare earth metal. may include a combination of

The alkali metal compound is one of alkali metal oxides such as Li ₂ O, Cs ₂ O, and K ₂ O, one of alkali metal halides such as LiF, NaF, CsF, KF, LiI, NaI, CsI, and KI, or may include any combination thereof. According to one embodiment, the alkali metal compound may include LiF, Li ₂ O, NaF, LiI, NaI, CsI, KI, or any combination thereof.

The alkaline earth metal compound is one of alkaline earth metal compounds such as BaO, SrO, CaO, Ba _x Sr _1-x O (0<x<1), Ba _x Ca _1-x O (0<x<1), or the like. may include any combination thereof. According to one embodiment, the alkaline earth metal compound may include BaO, SrO, CaO, or any combination thereof.

The rare earth metal compound may include YbF ₃ , ScF ₃ , ScO ₃ , Y ₂ O ₃ , Ce ₂ O ₃ , GdF ₃ , TbF ₃ , or any combination thereof. According to one embodiment, the rare earth metal compound may include YbF ₃ , ScF ₃ , TbF ₃ , YbI ₃ , ScI ₃ , TbI ₃ , or any combination thereof.

The alkali metal complex, the alkaline earth metal complex, and the rare earth metal complex include ions of the alkali metal, alkaline earth metal, and rare earth metal as described above, and are coordinated to the metal ions of the alkali metal complex, the alkaline earth metal complex, and the rare earth metal complex. Ligands are, independently of each other, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxydiphenyloxa diazole, hydroxydiphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzoimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof. can

The electron injection layer is composed of only an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof as described above, or , It may further include the organic material. When the electron injection layer further includes an organic material, the alkali metal, alkaline earth metal, rare earth metal, alkali metal compound, alkaline earth metal compound, rare earth metal compound, alkali metal complex, alkaline earth metal complex, rare earth metal complex, or any of these The combination may be uniformly or non-uniformly dispersed in a matrix composed of the organic material.

The electron injection layer may have a thickness of about 1 Å to about 100 Å or about 3 Å to about 90 Å. When the thickness of the electron injection layer satisfies the aforementioned range, satisfactory electron injection characteristics may be obtained without a substantial increase in driving voltage.

[Second electrode 19]

The second electrode 19 is disposed above the intermediate layer 10A as described above. The second electrode 19 may be a cathode, which is an electron injection electrode. In this case, the material for the second electrode 19 is a metal having a low work function, an alloy, an electrically conductive compound, or a combination thereof. (combination) can be used.

The second electrode 19 includes lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In) ), magnesium-silver (Mg-Ag), ITO, IZO, or any combination thereof. The second electrode 19 may be a transmissive electrode, a transflective electrode, or a reflective electrode.

The second electrode 19 may have a single-layer structure of a single layer or a multi-layer structure of a plurality of layers.

Explanation of Terms

In the present specification, the C ₁ -C ₆₀ alkyl group refers to a linear or branched saturated aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, and the C ₁ -C ₆₀ alkylene group has the same structure as the C ₁ -C ₆₀ alkyl group. It means a divalent group having

Examples of the C ₁ -C ₆₀ alkyl group, C ₁ -C ₂₀ alkyl group and/or C ₁ -C ₁₀ alkyl group in the present specification include methyl group, ethyl group, n -propyl group, isopropyl group, n -butyl group, sec -butyl group , isobutyl group, tert -butyl group, n -pentyl group, tert -pentyl group, neopentyl group, isopentyl group, sec -pentyl group, 3-pentyl group, sec -isopentyl group, n -hexyl group, iso Hexyl group, sec -hexyl group, tert -hexyl group, n -heptyl group, isoheptyl group, sec -heptyl group, tert -heptyl group, n -octyl group, isooctyl group, sec -octyl group, tert -octyl group, Substituted or unsubstituted with n -nonyl group, isononyl group, sec -nonyl group, tert -nonyl group, n -decyl group, isodecyl group, sec -decyl group, tert -decyl group, or any combination thereof, methyl group, ethyl group, n -propyl group, isopropyl group, n -butyl group, sec -butyl group, isobutyl group, tert -butyl group, n -pentyl group, tert -pentyl group, neopentyl group, isopentyl group, sec -pentyl group, 3-pentyl group, sec -isopentyl group, n -hexyl group, isohexyl group, sec -hexyl group, tert -hexyl group, n -heptyl group, isoheptyl group, sec -heptyl group, tert -heptyl group, n -octyl group, isooctyl group, sec -octyl group, tert -octyl group, n -nonyl group, isononyl group, sec -nonyl group, tert -nonyl group, n -decyl group, isodecyl group, A sec -decyl group or a tert -decyl group may be included.

In the present specification, the C ₁ -C ₆₀ alkoxy group refers to a monovalent group having a chemical formula of -OA ₁₀₁ (where A ₁₀₁ is the C ₁ -C ₆₀ alkyl group), and specific examples thereof include a methoxy group, an ethoxy group, A propoxy group, a butoxy group or a pentoxy group may be included.

In the present specification, the C ₂ -C ₆₀ alkenyl group has a structure including one or more carbon-carbon double bonds at the middle or end of the C ₂ -C ₆₀ alkyl group, and specific examples thereof include an ethenyl group, a propenyl group, a butenyl group, and the like. This is included. In the present specification, a C ₂ -C ₆₀ alkenylene group means a divalent group having the same structure as the C ₂ -C ₆₀ alkenyl group.

In the present specification, the C ₂ -C ₆₀ alkynyl group has a structure including one or more carbon-carbon triple bonds at the middle or end of the C ₂ -C ₆₀ alkyl group, and specific examples thereof include an ethynyl group, a propynyl group ( propynyl), etc. In the present specification, a C ₂ -C ₆₀ alkynylene group means a divalent group having the same structure as the C ₂ -C ₆₀ alkynyl group.

In the present specification, a C ₃ -C ₁₀ cycloalkyl group refers to a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and a C ₃ -C ₁₀ cycloalkylene group has the same structure as the C ₃ -C ₁₀ cycloalkyl group. means a group.

Examples of the C ₃ -C ₁₀ cycloalkyl group in the present specification include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, an adamantanyl group, and a norbornanyl group. ) (bicyclo [2.2.1] heptyl group (bicyclo [2.2.1] heptyl)) bicyclo [1.1.1] pentyl group (bicyclo [1.1.1] pentyl), bicyclo [2.1.1] hexyl group ( bicyclo[2.1.1]hexyl), bicyclo[2.2.2]octyl group, etc. may be included.

In the present specification, the C ₁ -C ₁₀ heterocycloalkyl group is a monovalent monocyclic group having 1 to 10 carbon atoms including at least one hetero atom selected from N, O, P, Si, S, Se, Ge, and B as a ring-forming atom. It means a click group, and the C ₁ -C ₁₀ heterocycloalkylene group means a divalent group having the same structure as the C ₁ -C ₁₀ heterocycloalkyl group.

Examples of the C ₁ -C ₁₀ heterocycloalkyl group in the present specification include a silolanyl group, a silinanyl group, a tetrahydrofuranyl group, and a tetrahydro-2H-pyranyl group. ), a tetrahydrothiophenyl group, and the like may be included.

In the present specification, a C ₃ -C ₁₀ cycloalkenyl group is a monovalent cyclic group having 3 to 10 carbon atoms, which has at least one carbon-carbon double bond in the ring, but does not have aromaticity, Specific examples thereof include a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group and the like. In the present specification, a C ₃ -C ₁₀ cycloalkenylene group refers to a divalent group having the same structure as the C ₃ -C ₁₀ cycloalkenyl group.

In the present specification, the C ₁ -C ₁₀ heterocycloalkenyl group is a monovalent monovalent group having 1 to 10 carbon atoms including at least one hetero atom selected from N, O, P, Si, S, Se, Ge, and B as a ring-forming atom. As a cyclic group, it has at least one double bond in the ring. Specific examples of the C ₁ -C ₁₀ heterocycloalkenyl group include a 2,3-dihydrofuranyl group, a 2,3-dihydrothiophenyl group, and the like. In the present specification, the C ₁ -C ₁₀ heterocycloalkenylene group refers to a divalent group having the same structure as the C ₁ -C ₁₀ heterocycloalkenyl group.

In the present specification, a C ₆ -C ₆₀ aryl group refers to a monovalent group having a carbocyclic aromatic system having 6 to 60 carbon atoms, and a C ₆ -C ₆₀ arylene group refers to a carbocyclic aromatic group having 6 to 60 carbon atoms. Means a divalent group having a cyclic aromatic system. Specific examples of the C ₆ -C ₆₀ aryl group include a phenyl group, a naphthyl group, an anthracenyl group, a phenanthrenyl group, a pyrenyl group, a chrysenyl group, and the like. When the C ₆ -C ₆₀ aryl group and the C ₆ -C ₆₀ arylene group include two or more rings, the two or more rings may be fused to each other.

In the present specification, the C ₁ -C ₆₀ heteroaryl group includes at least one heteroatom selected from N, O, P, Si, S, Se, Ge, and B as a ring-forming atom and includes a heterocyclic aromatic group having 1 to 60 carbon atoms. It means a monovalent group having a system, and the C ₁ -C ₆₀ heteroarylene group contains at least one heteroatom selected from N, O, P, Si, S, Se, Ge and B as a ring-forming atom and has a carbon number It means a divalent group having 1 to 60 heterocyclic aromatic systems. Specific examples of the C ₁ -C ₆₀ heteroaryl group include a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, an isoquinolinyl group, and the like. When the C ₁ -C ₆₀ heteroaryl group and the C ₁ -C ₆₀ heteroarylene group include two or more rings, the two or more rings may be fused to each other.

In the present specification, the C ₆ -C ₆₀ aryloxy group refers to -OA ₁₀₂ (where A ₁₀₂ is the C ₆ -C ₆₀ aryl group), and the C ₆ -C ₆₀ arylthio group refers to -SA ₁₀₃ (wherein , A ₁₀₃ is the C ₆ -C ₆₀ aryl group).

In the present specification, a monovalent non-aromatic condensed polycyclic group includes two or more rings condensed with each other and contains only carbon as a ring-forming atom (for example, the number of carbon atoms may be 8 to 60). and the entire molecule is a monovalent group having non-aromaticity. Specific examples of the non-aromatic condensed polycyclic group include a fluorenyl group and the like. A divalent non-aromatic condensed polycyclic group in the present specification means a divalent group having the same structure as the monovalent non-aromatic condensed polycyclic group.

In the present specification, a monovalent non-aromatic condensed heteropolycyclic group includes two or more rings condensed with each other, and carbon as a ring-forming atom (eg, carbon atoms may be 1 to 60) in addition to It includes a heteroatom selected from N, O, P, Si, S, Se, Ge, and B, and the entire molecule refers to a monovalent group having non-aromaticity. The monovalent non-aromatic heterocondensed polycyclic group includes a carbazolyl group and the like. A divalent non-aromatic condensed heteropolycyclic group in the present specification means a divalent group having the same structure as the monovalent non-aromatic condensed heteropolycyclic group.

In the present specification, "π electron-depleted nitrogen-containing C ₁ -C ₆₀ cyclic group" refers to _a ring constituting moiety, *-N=* _' (above A cyclic group having 1 to 60 carbon atoms including at least one (* and *' are bonding sites with neighboring atoms, respectively), for example, a) a first ring, b) two or more first rings condensed with each other It may be a condensed ring or c) a condensed ring in which one or more first rings and one or more second rings are condensed with each other.

In the present specification, "π electron-rich _{C 3 -C 60} cyclic group" is a ring constituting moiety, *-N=* _' (the * and *' are each It is a cyclic group having 3 to 60 carbon atoms that does not include a bonding site with a neighboring atom), and may be, for example, a) a second ring or b) a condensed ring in which two or more second rings are condensed with each other.

In the present specification, "C ₅ -C ₆₀ cyclic group" is a monocyclic or polycyclic group having 5 to 60 carbon atoms, for example, a) a third ring or b) two or more third rings condensed with each other. It may be a condensed ring.

In the present specification, "C ₁ -C ₆₀ heterocyclic group" is a monocyclic or polycyclic group having 1 to 60 carbon atoms including at least one heteroatom, for example, a) a fourth ring, b) two or more rings. It may be a condensed ring in which the fourth ring is condensed with each other or c) a condensed ring in which one or more third rings and one or more fourth rings are condensed with each other.

In the present specification, the "first ring" is an imidazole group, a pyrazole group, a thiazole group, an isothiazole group, an oxazole group, an isoxazole group, a pyridine group, a pyrazine group, a pyridazine group, a pyrimidine group, tria It may be a sol group, tetrazole group, oxadiazole group, triazine group or thiadiazole group.

In the present specification, the "second ring" may be a benzene group, a cyclopentadiene group, a pyrrole group, a furan group, a thiophene group, or a silol group.

The "third ring" in the present specification refers to a cyclopentane group, a cyclopentadiene group, an indene group, an adamantane group, a norbornene group, a bicyclo[1.1.1]pentane group, a bicyclo[2.1. 1]hexane group, bicyclo[2.2.1]heptane group (norbornane group), bicyclo[2.2.2]octane group, cyclohexane group, cyclohexene group, or benzene group.

In the present specification, the "fourth ring" refers to a furan group, a thiophene group, a pyrrole group, a silole group, an oxazole group, an isoxazole group, an oxadiazole group, an isoxadiazole group, an oxatriazole group, and an isoxatriazole group. group, thiazole group, isothiazole group, thiadiazole group, isothiadiazole group, thiatriazole group, isothiatriazole group, pyrazole group, imidazole group, triazole group, tetrazole group, aza It may be a silol group, a diazacylol group or a triazacylol group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, or a triazine group.

For example, the π electron deficient nitrogen-containing C ₁ -C ₆₀ cyclic group is an imidazole group, a pyrazole group, a thiazole group, an isothiazole group, an oxazole group, an isoxazole group, a pyridine group, and a pyrazine group. group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzoquinoline group, benzoisoquinoline group, phthalazine group, naphthyridine group, quinoxaline group, benzoquinoxaline group , Quinazoline group, chinoline group, phenanthridine group, acridine group, phenanthroline group, phenazine group, benzoimidazole group, isobenzothiazole group, benzoxazole group, isobenzoxazole group, Triazole group, tetrazole group, oxadiazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, azacarbazole group, azadibenzofuran group, azadibenzothiophene group, an azadibenzosilol group, an acridine group or a pyridopyrazine group.

For example, the π electron-rich C ₃ -C ₆₀ cyclic group may be a benzene group, a heptalene group, an indene group, a naphthalene group, an azulene group, an indacene group, an acenaphthylene group, or a fluorene group. , Spiro-bifluorene group, benzofluorene group, dibenzofluorene group, phenalene group, phenanthrene group, anthracene group, fluoranthene group, triphenylene group, pyrene group, chrysene group, naphtha Sen group, picene group, perylene group, pentacene group, hexacene group, pentapene group, rubicene group, coronene group, ovalene group, pyrrole group, furan group, thiophene group, isoindole group, indole group , indene group, benzofuran group, benzothiophene group, benzosilol group, naphthopyrrole group, naphthofuran group, naphthothiophene group, naphthosylol group, benzocarbazole group, dibenzocarbazole group, dibenzo Furan group, dibenzothiophene group, carbazole group, dibenzosilol group, indenocarbazole group, indolocarbazole group, benzofurocarbazole group, benzothienocarbazole group, benzosylolocarbazole group , Triindolobenzene group, pyrrolophenanthrene group, furanophenanthrene group, thienophenanthrene group, benzonaphthofuran group, benzonaphthothiophene group, (indolo)phenanthrene group, (benzofurano) It may be a phenanthrene group or a (benzothieno)phenanthrene group.

For example, the C ₅ -C ₆₀ carbocyclic group may be a cyclopentane group, a cyclohexane group, a cyclohexene group, a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, a triphenylene group, a pyrene group, Chrysen group, 1,2,3,4-tetrahydronaphthalene group, cyclopentadiene group, indene group, fluorene group, 5,6,7,8-tetrahydro Isoquinoline (5,6,7,8-tetrahydroisoquinoline) group, 5,6,7,8-tetrahydroquinoline (5,6,7,8-tetrahydroquinoline) group, adamantane group, norbornane (norbornane) group or norbornene group.

For example, the C ₁ -C ₆₀ heterocyclic group is a thiophene group, a furan group, a pyrrole group, a cyclopentadiene group, a silol group, a borole group, a phosphole group, a selenophene group, a low molar group, a benzothione group, Ofene group, benzofuran group, indole group, indene group, benzosilol group, benzoborol group, benzophosphole group, benzoselenophen group, benzozermol group, dibenzothiophene group, dibenzofuran group, carbazole group, Dibenzosilol group, dibenzoborol group, dibenzophosphole group, dibenzoselenophene group, dibenzozermol group, dibenzothiophene 5-oxide group, 9H-fluorene-9-one group, dibenzothiophene 5,5-dioxide group, azabenzothiophene group, azabenzofuran group, azaindole group, azaindene group, azabenzosilol group, azabenzoborol group, azabenzophosphole group, azabenzoselenophene group, aza Benzozermol group, azadibenzothiophene group, azadibenzofuran group, azacarbazole group, azafluorene group, azadibenzosylol group, azadibenzoborol group, azadibenzophosphole group, azadibenzosele Nophen group, azadibenzothiophene 5-oxide group, aza-9H-fluoren-9-one group, azadibenzothiophene 5,5-dioxide group, pyridine group, pyrimidine group, Pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group, quinazoline group, phenanthroline group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, thiazole group, isothiazole group, oxadiazole group, thiadiazole group, benzopyrazole group, benzoimidazole group, benzoxazole group, benzothiazole group, benzoxadiazole group, benzothiadia may be a group of sols.

In the present specification, each of a π electron deficient nitrogen-containing C ₁ -C ₆₀ cyclic group, a π electron excess C ₃ -C ₆₀ cyclic group, a C ₅ -C ₆₀ cyclic group, and a C ₁ -C ₆₀ heterocyclic group, Depending on the chemical structure, it may be part of a condensed ring or may be a monovalent, divalent, trivalent, tetravalent, pentavalent or hexavalent group.

In this specification, "fluorinated C ₁ -C ₆₀ alkyl group (or fluorinated C ₁ -C ₂₀ alkyl group, etc.)", "fluorinated C ₃ -C ₁₀ cycloalkyl group", "fluorinated C ₁ -C ₁₀ heterocycloalkyl group" And "fluorinated phenyl group" is a C ₁ -C ₆₀ alkyl group (or, C ₁ -C ₂₀ alkyl group, etc.), C ₃ -C ₁₀ cycloalkyl group, C ₁ -, each substituted with at least one fluoro group (-F). It means a C ₁₀ heterocycloalkyl group and a phenyl group. For example, "fluorinated C ₁ alkyl group (ie, fluorinated methyl group)" includes -CF ₃ , -CF ₂ H and -CFH ₂ . The "fluorinated C ₁ -C ₆₀ alkyl group (or fluorinated C ₁ -C ₂₀ alkyl group, etc.)", "fluorinated C ₃ -C ₁₀ cycloalkyl group", "fluorinated C ₁ -C ₁₀ heterocycloalkyl group", or "Fluorinated phenyl group" refers to i) a fully fluorinated C ₁ -C ₆₀ alkyl group (or a fully fluorinated C ₁ -C ₂₀ alkyl group, etc.) in which all hydrogens in each group are substituted with fluoro groups; A fully fluorinated C ₃ -C ₁₀ cycloalkyl group, a fully fluorinated C ₁ -C ₁₀ heterocycloalkyl group, or a fully fluorinated phenyl group, or ii) a partially fluorinated group in which not all hydrogens in each group are substituted with fluoro groups. (fluorinated) C ₁ -C ₆₀ alkyl group (or partially fluorinated C ₁ -C ₂₀ alkyl group, etc.), partially fluorinated C ₃ -C ₁₀ cycloalkyl group, partially fluorinated C ₁ -C ₁₀ heterocycloalkyl group, or partially fluorinated phenyl group there is.

In this specification, "deuterated C ₁ -C ₆₀ alkyl group (or deuterated C ₁ -C ₂₀ alkyl group, etc.)", "deuterated C ₃ -C ₁₀ cycloalkyl group", "deuterated C ₁ -C ₁₀ A "heterocycloalkyl group" and a "deuterated phenyl group" refer to a C ₁ -C ₆₀ alkyl group (or C ₁ -C ₂₀ alkyl group, etc.), a C ₃ -C ₁₀ cycloalkyl group, C ₁ -C substituted with at least one deuterium, respectively. ₁₀ means a heterocycloalkyl group and a phenyl group. For example, the "deuterated C ₁ alkyl group (ie, deuterated methyl group)" may include -CD ₃ , -CD ₂ H and -CDH ₂ , and the "deuterated C ₃ -C ₁₀ cycloalkyl group", The "deuterated C ₁ -C ₆₀ alkyl group (or deuterated C ₁ -C ₂₀ alkyl group, etc.)", "deuterated C ₃ -C ₁₀ cycloalkyl group", "deuterated C ₁ -C ₁₀ heterocycloalkyl group", or "Deuterated phenyl group" refers to i) a fully deuterated C ₃ -C ₁₀ cycloalkyl group, a fully deuterated C ₁ -C ₆₀ alkyl group in which all hydrogens in each group are replaced with deuterium (or fully deuterated C 1 -C 60 alkyl group) Digested C ₁ -C ₂₀ alkyl group, etc.), fully deuterated C ₃ -C ₁₀ cycloalkyl group, fully deuterated C ₁ -C ₁₀ heterocycloalkyl group, or fully deuterated phenyl group, or ii) all hydrogens in each group Not substituted with deuterium, partially deuterated C ₃ -C ₁₀ cycloalkyl group, partially deuterated C ₁ -C ₆₀ alkyl group (or partially deuterated C ₁ -C ₂₀ alkyl group, etc.), partially deuterated C ₃ It may be a -C ₁₀ cycloalkyl group, a partially deuterated C ₁ -C ₁₀ heterocycloalkyl group, or a partially deuterated phenyl group.

In the present specification, "(C ₁ -C ₂₀ alkyl) 'X'group" refers to an 'X' group substituted with at least one C ₁ -C ₂₀ alkyl group. For example, in the present specification, "(C ₁ -C ₂₀ alkyl)C ₃ -C ₁₀ cycloalkyl group" refers to a C ₃ -C ₁₀ cycloalkyl group substituted with at least one C ₁ -C ₂₀ alkyl group, and "(C _{A 1-} C ₂₀ alkyl)phenyl group” refers to a phenyl group substituted with at least one C ₁ -C ₂₀ alkyl group. An example of a (C ₁ alkyl)phenyl group is a toluyl group.

In the present specification, “azaindole group, azabenzoborol group, azabenzophosphole group, azaindene group, azabenzosilol group, azabenzozermol group, azabenzothiophene group, azabenzoselenophene group, azabenzofuran group , azacarbazole group, azadibenzobolol group, azadibenzophosphole group, azafluorene group, azadibenzosilol group, azadibenzozermol group, azadibenzothiophene group, azadibenzoselenophene group, Azadibenzofuran group, azadibenzothiophene 5-oxide group, aza-9H-fluoren-9-one group, azadibenzothiophene 5,5-dioxide group" are respectively referred to as "indole group, benzoborol group , Benzophosphole group, indene group, benzosilol group, benzozermol group, benzothiophene group, benzoselenophene group, benzofuran group, carbazole group, dibenzoborol group, dibenzophosphole group, fluorene group, Dibenzosilol group, dibenzozermol group, dibenzothiophene group, dibenzoselenophene group, dibenzofuran group, dibenzothiophene 5-oxide group, 9H-fluorene-9-one group, dibenzothiophene It means a heterocyclic ring having the same backbone as the "5,5-dioxide group", but having at least one of the carbon atoms forming the ring substituted with nitrogen.

In the present specification, the substituted π electron-deficient nitrogen-containing C ₁ -C ₆₀ cyclic group, the substituted π-electron excess C ₃ -C ₆₀ cyclic group, the substituted C ₅ -C ₆₀ cyclic group, and the substituted C ₁ -C ₆₀ heterocyclic group, substituted C ₁ -C ₆₀ alkylene group, substituted C ₂ -C ₆₀ alkenylene group, substituted C ₂ -C ₆₀ alkynylene group, substituted C ₃ -C ₁₀ cycloalkylene group, A substituted C ₁ -C ₁₀ heterocycloalkylene group, a substituted C ₃ -C ₁₀ cycloalkenylene group, a substituted C ₁ -C ₁₀ heterocycloalkenylene group, a substituted C ₆ -C ₆₀ arylene group, a substituted C ₁ -C ₆₀ heteroarylene group, substituted divalent non-aromatic condensed polycyclic group, substituted divalent non-aromatic hetero condensed polycyclic group, substituted C ₁ -C ₆₀ alkyl group, substituted C ₂ -C ₆₀ alkenyl group, Substituted C ₂ -C ₆₀ alkynyl group, substituted C ₁ -C ₆₀ alkoxy group, substituted C ₃ -C ₁₀ cycloalkyl group, substituted C ₁ -C ₁₀ heterocycloalkyl group, substituted C ₃ -C ₁₀ cycloalke Nyl group, substituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted C ₆ -C ₆₀ aryl group, substituted C ₆ -C ₆₀ aryloxy group, substituted C ₆ -C ₆₀ arylthio group, substituted C ₁ The substituents of the -C ₆₀ heteroaryl group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic condensed polycyclic group are independently of each other,

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group or a C ₁ -C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₃ -C ₁₀ Cycloalkyl group, C ₁ -C ₁₀ Heterocycloalkyl group, C ₃ -C ₁₀ Cycloalkenyl group, C ₁ -C ₁₀ Heterocycloalkenyl group, C ₆ -C ₆₀ Aryl group, C ₇ -C ₆₀ Alkylaryl group, C ₆ -C ₆₀ Aryloxy group, C ₆ -C ₆₀ Arylthio group, C ₁ -C ₆₀ heteroaryl group, C ₂ -C ₆₀ alkylheteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Si (Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=O)(Q ₁₈ )( Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or any combination thereof, substituted with a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, or a C ₁ - C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group , C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ Aryl group, C ₇ -C ₆₀ Alkylaryl group, C ₆ -C ₆₀ Aryloxy group, C ₆ -C ₆₀ Arylthio group, C ₁ -C ₆₀ Heteroaryl group, C ₂ -C ₆₀ Alkylheteroaryl group, 1 A non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -Ge(Q ₂₃ ) (Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=0)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ), or any thereof Combinationally substituted or unsubstituted, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₇ -C ₆₀ alkylaryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, C ₂ -C ₆₀ alkylheteroaryl group, monovalent a non-aromatic condensed polycyclic group or a monovalent non-aromatic condensed heteropolycyclic group;

-N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=0)(Q ₃₈ )(Q ₃₉ ), or -P(Q ₃₈ )(Q ₃₉ ); or

any combination thereof;

can be

In the present specification, Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ are each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; or a monovalent non-aromatic heterocondensed polycyclic group;

For example, in the present specification, Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ and Q ₃₁ to Q ₃₉ are independently of each other,

-CH ₃ , -CD ₃ , -CD ₂ H, -CDH ₂ , -CH ₂ CH ₃ , -CH ₂ CD ₃ , -CH ₂ CD ₂ H, -CH ₂ CDH ₂ , -CHDCH ₃ , -CHDCD ₂ H , -CHDCDH ₂ , -CHDCD ₃ , -CD ₂ CD ₃ , -CD ₂ CD ₂ H or -CD ₂ CDH ₂ ; or

Deuterium, C ₁ -C ₁₀ Alkyl group, phenyl group, or unsubstituted or substituted with any combination thereof, n -propyl group, isopropyl group, n -butyl group, sec -butyl group, isobutyl group, tert -butyl group , n -pentyl group, tert -pentyl group, neopentyl group, isopentyl group, sec -pentyl group, 3-pentyl group, sec -isopentyl group, phenyl group, biphenyl group or naphthyl group;

can be

In this specification, “room temperature” refers to a temperature of about 25°C.

In the present specification, "biphenyl group, terphenyl group and tetraphenyl group" refer to a monovalent group in which two, three or four phenyl groups are linked to each other through a single bond.

Hereinafter, for synthesis examples and embodiments, a compound and an organic light emitting device according to one embodiment of the present invention will be described in more detail, but the present invention is not limited to the following synthesis examples and embodiments. In the following synthesis example, in the expression "'B' was used instead of 'A'", the amount of 'B' used and the amount of 'A' used were the same based on molar equivalents.

[Example]

Synthesis Example 1 (Compound H1)

Compound H1 was synthesized according to the following reaction scheme.

9H-3,9'-bicarbazole (7.48 g, 22.49 mmol), (3-bromophenyl)triphenylsilane ((3-bromophenyl)triphenylsilane) (11.21 g, O- _{_ _} _ _ Dissolve in xylene (56 mL). After the mixture was warmed up, it was refluxed and stirred for 12 hours. After completion of the reaction, the temperature was lowered to room temperature, and then methanol (1000 mL) was added. After filtering the resulting solid, it was purified through silica column chromatography to obtain 10 g (yield: 67%) of [Compound H1].

LC-Mass (calculated: 666.25 g/mol, measured: M+1 = 667 g/mol)

Synthesis Example 2 (Compound H8)

Synthesis of [Intermediate H8-1]

3-Bromo-9H-carbazole (4.00 g, 16.3 mmol), triphenyl(3-(4,4,5,5-tetramethyl-1,3,2-dioc saborolan-2-yl)phenyl)silane (triphenyl(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)silane) (8.27 g, 17.9 mmol) , Pd(PPh ₃ ) ₄ (0.57 g, 0.49 mmol) and K ₂ CO ₃ (2.92 g, 21.1 mmol) were dissolved in tetrahydrofuran/distilled water (125 mL/25 mL). After the mixture was warmed up, it was refluxed and stirred for 12 hours. After completion of the reaction, the temperature was lowered to room temperature, and ethyl acetate and a saturated aqueous ammonium chloride solution were added. The organic solution layer was extracted using ethyl acetate, dried over anhydrous MgSO ₄ and filtered. The filtrate was concentrated and purified through silica gel column chromatography to obtain 5.54 g (yield: 68%) of [Intermediate H8-1].

LC-Mass (calculated: 501.19 g/mol, measured: M+1 = 502 g/mol)

Synthesis of [Compound H8]

Compound H8-1 (5.00 g, 9.97 mmol), 3-Iodo-9-phenyl-9H-carbazole (4.05 g, 11.0 mmol), Pd (dba) Dissolve ₂ (0.29 g, 0.50 mmol), P( t Bu) ₃ (50 wt% toluene solution, 0.50 mL, 1.0 mmol), and NaO t Bu (1.44 g, 21.1 mmol) in xylenes (125 mL). After the mixture was warmed up, it was refluxed and stirred for 12 hours. After completion of the reaction, the temperature was lowered to room temperature, and ethyl acetate and a saturated aqueous ammonium chloride solution were added. The organic solution layer was extracted using ethyl acetate, dried over anhydrous MgSO ₄ and filtered. The filtrate was concentrated and purified through silica gel column chromatography to obtain 5.62 g (yield 76%) of [Compound H8].

LC-Mass (calculated: 742.28 g/mol, measured: M+1 = 743 g/mol)

Synthesis Example 3 (Compound E1)

Compound E1 was synthesized according to the following reaction scheme.

9,9'-(6-chloro-1,3,5-triazine-2,4-dinyl)bis(9H-carbazole)(9,9'-(6-chloro-1,3,5-triazine -2,4-diyl)bis(9H-carbazole)) (9.56 g, 21.45 mmol), triphenyl(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane- 2-nyl) phenyl) silane (triphenyl (3- (4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) phenyl) silane) (10.91 g, 23.59 mmol), Pd (PPh ₃ ) Dissolve ₄ (2.48 g, 2.14 mmol) and K ₂ CO ₃ (5.93 g, 42.90 mmol) in tetrahydrofuran/distilled water (54 mL/22 mL). After the mixture was warmed up, it was refluxed and stirred for 12 hours. After completion of the reaction, the temperature was lowered to room temperature, and then methanol (1000 mL) was added. After filtering the resulting solid, 8.50 g (yield 53%) of [Compound E1] was obtained by purification through silica column chromatography.

LC-Mass (calculated: 745.27 g/mol, measured: M+1 = 746 g/mol)

Synthesis Example 4 (Compound E2)

Compound E2 was synthesized according to the following reaction scheme.

Triphenyl (3- (4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) phenyl) silane (triphenyl (3- (4,4,5,5-tetramethyl -1,3,2-dioxaborolan-2-yl)phenyl)silane instead of triphenyl (4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) Synthesis Example 4 and Compound E2 (yield: 24%) was synthesized using the same method.

LC-Mass (calculated: 745.27 g/mol, measured: M+1 = 746 g/mol)

Synthesis Example 5 (Compound E3)

Compound E3 was synthesized according to the following reaction scheme.

9-(4,6-dichloro-1,3,5-triazin-2-yl)-9H-carbazole (9-(4,6-Dichloro-1,3,5-triazin-2-yl) -9H-carbazole) (3.5 g, 11.1 mmol), triphenyl (3- (4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl) phenyl) silane (3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)silane) (12.8 g, 27.8 mmol), Pd(PPh ₃ ) ₄ (0.77 g, 0.67 mmol) ), K ₂ CO ₃ (4.3 g, 31.1 mmol) was dissolved in toluene/dioxane/distilled water (100 mL/100 mL/50 mL). After the mixture was warmed up, it was refluxed and stirred for 12 hours. After completion of the reaction, the temperature was lowered to room temperature, and then methanol (1200 mL) was added. After filtering the resulting solid, it was purified through silica column chromatography to obtain 4.8 g (yield 47%) of [Compound E3].

LC-Mass (calculated: 914.33 g/mol, measured: M+1 = 915 g/mol)

Synthesis Example 6 (Compound E4)

Compound E4 was synthesized according to the following reaction scheme.

9,9'-(6-chloro-1,3,5-triazine-2,4-dinyl)bis(9H-carbazole)(9,9'-(6-chloro-1,3,5-triazine -2,4-diyl)bis(9H-carbazole)) instead of 9-(4-chloro-6-phenyl-1,3,5-triazin-2-yl)-9H-carbazole(9-(4- Compound E4 (yield: 42%) using the same method as in Synthesis Example 4, except that chloro-6-phenyl-1,3,5-triazine-2-yl) -9H-carbazole) was used. was synthesized.

LC-Mass (calculated: 656.24 g/mol, measured: M+1 = 657 g/mol)

Synthesis Example 7 (Compound E5)

Compound E5 was synthesized according to the following reaction scheme.

9,9'-(6-chloro-1,3,5-triazine-2,4-dinyl)bis(9H-carbazole)(9,9'-(6-chloro-1,3,5-triazine -2,4-diyl) bis (9H-carbazole)) instead of 9,9 '(6-chloro-1,3,5-triazine-2,4-dinyl) bis (3-phenyl-9H-carbazole ( 9.9'-6-chloro-1,3,5-triazine-2,4-diyl) bis (3-phenyl-9H-carbazole)) was used in the same manner as in Synthesis Example 4, except that Compound E5 (yield: 47%) was synthesized using

LC-Mass (calculated: 897.33 g/mol, measured: M+1 = 898 g/mol)

Synthesis Example 8 (Compound E6)

Compound E6 was synthesized according to the following reaction scheme.

Intermediate H9-1 (5.10 g, 10.2 mmol), 9-(4-chloro-6-phenyl-1,3,5-triazin-2-yl)-9H-carbazole (9-(4-chloro-6 -phenyl-1,3,5-triazin-2-yl)-9H-carbazole) (4.35 g, 12.2 mmol) and sodium tert-butoxide (t-BuONa) (1.27 g, 13.2 mmol) in 250 mL of THF. After adding, the mixture was stirred at room temperature for 20 hours. After completion of the reaction, the mixture was filtered through silica gel under reduced pressure, and the filtrate was concentrated under reduced pressure. The product was separated by silica gel column chromatography to give compound E6 (6.05 g, 72% yield).

LC-Mass (calculated: 821.30 g/mol, measured: M+1 = 822 g/mol)

Synthesis Example 9 (Compound E7)

Compound E7 was synthesized according to the following reaction scheme.

9,9'-(6-chloro-1,3,5-triazine-2,4-dinyl)bis(9H-carbazole) (9,9'-(6-chloro-1,3,5-triazine -2,4-diyl)bis(9H-carbazole)) instead of 9,9'-(6-(3-bromophenyl)-1,3,5-triazine-2,4-dinyl)bis(9H- Carbazole) (9,9'-(6-(3-bromophenyl)-1,3,5-triazine-2,4-diyl)bis(9H-carbazole)), except that Compound E7 (yield: 40%) was synthesized using the same method as in Synthesis Example 4.

LC-Mass (calculated: 821.30 g/mol, measured: M+1 = 822 g/mol)

Synthesis Example 10 (Compound E8)

Compound E8 was synthesized according to the following reaction scheme.

9,9'-(6-chloro-1,3,5-triazine-2,4-dinyl)bis(9H-carbazole)(9,9'-(6-chloro-1,3,5-triazine -2,4-diyl)bis(9H-carbazole)) instead of 9,9'-(6-chloro-1,3,5-triazine-2,4-dinyl)bis(3,6-di-tert- Butyl-9H-carbazole) (9,9'-6-chloro-1,3,5-triazine-2,4-diyl)bis(3,6-di-tert-butyl-9H-carbazole)) Compound E8 (yield: 67%) was synthesized in the same manner as in Synthesis Example 4, except that

LC-Mass (calculated: 969.52 g/mol, measured: M+1 = 970 g/mol)

Evaluation Example 1: T _One energy level assessment

The triplet energy levels of compounds H1 to H16 and E1 to E8 used as hosts of the present invention and known host compounds C1 to C37 for comparison were evaluated by DFT (density functional theory). For example, the triplet (T ₁ ) energy level of the compounds is evaluated using DFT (eg, DFT method of Gaussian program, T1 adiabatic) structure-optimized at the B3LYP/6-31G(d,p) level. One result is shown in Table 1 below.

compound T ₁ (eV) compound T ₁ (eV) H1 3.024 C1 2.57 H2 3 C2 2.474 H3 3.026 C3 2.218 H4 3.552 C4 2.359 H5 2.951 C5 2.292 H6 2.979 C6 2.576 H7 3.054 C7 2.333 H8 2.813 C8 2.283 H9 2.827 C9 2.566 H10 2.877 C10 2.567 H11 2.815 C11 2.57 H12 2.896 C12 2.687 H13 3.016 C13 2.64 H14 2.839 C14 2.518 H15 2.822 C15 2.617 E1 2.994 C16 2.617 E2 2.983 C17 2.688 E3 3.033 C18 2.601 E4 3.025 C19 2.582 E5 2.837 C20 2.533 E6 2.812 C21 2.572 E7 2.848 C22 2.804 E8 2.891 C23 2.689 C24 2.171 C25 2.659 C26 2.805 C27 2.801 C28 2.575 C29 2.425 C30 2.425 C31 2.424 C32 2.428 C33 2.57 C34 2.572 C35 2.572 C36 2.474 C37 2.485

Among the C1 to C37 compounds, it can be confirmed that the compound having two carbazole groups but having a structure in which the benzo rings of carbazole are connected to each other has a T ₁ energy level of less than 2.81 eV even when it contains a silyl group (eg, C9). And, when the compound having a structure in which triazine is bonded to 9-N of carbazole does not contain a silyl group, it can be confirmed that the T ₁ energy level is less than 2.81 eV.

Evaluation Example 2: PL curve evaluation of host exciplex

Compounds Z1 and Z2 were co-deposited on a quartz substrate in a weight ratio of 50:50 to prepare a 50 nm thin film, and H1 and E2 were co-deposited in a 50:50 weight ratio to prepare a 50 nm thin film.

PL was measured for the fabricated thin film using a HITACHI F7000 fluorescence spectrometer. A graph of the measured results is shown in FIG. 2 below.

The H1:E2 host film thin film (Exciplex energy = 2.683eV) has a lower exciplex energy than the Z1:Z2 host film thin film (Exciplex energy = 2.917eV), and a longer wavelength of the PL curve was observed. This suggests an increase in device lifetime due to an increase in stability.

Evaluation Example 3: ET host and dopant interaction evaluation

On a quartz substrate, compounds Z1 and Z2 (60:40 weight ratio) and 15% by weight of compound P8 as a dopant were co-deposited to form a 50 nm thick thin film as a control sample thin film.

Example sample thin films were fabricated using the same method as the control sample thin films, except that H1 and a combination of (E1 to E6, E9, and E11 to E13) were used as host compounds, respectively.

For the control sample thin film and 10 example sample thin films, changes in the 2 ^nd peak were observed using a HITACHI F7000 fluorescence spectrometer to observe the change in lifetime characteristics according to the ET host change. The results are shown in FIG. 3 (a) and 3(b).

As shown in Figures 3 (a) and 3 (b), it was confirmed that low exciplex energy due to the interaction between the ET host and the dopant was observed in the compound E4 host, and as a result, the device life characteristics were increased by about 850% or less.

Evaluation Example 4: Device Evaluation of Light-Emitting Device (1)

Examples 1 to 9 and Comparative Example 1

A glass substrate on which an indium tin oxide (ITO) electrode (first electrode, anode) having a thickness of 1500 Å was formed was washed with ultrasonic waves in distilled water. After the distilled water cleaning was completed, the substrate was ultrasonically cleaned with solvents such as isopropyl alcohol, acetone, and methanol, dried, transferred to a plasma cleaner, cleaned for 5 minutes using oxygen plasma, and then transferred to a vacuum layerer.

Compound HT3 and compound HT-D2 were co-deposited on the ITO electrode of the glass substrate to form a hole injection layer having a thickness of 100 Å, and then compound HT3 was deposited on the hole injection layer to form a hole transport layer having a thickness of 1300 Å. Then, an electron blocking layer having a thickness of 100 Å was formed by depositing mCP on the hole transport layer to form a hole transport region.

A light emitting layer having a thickness of 400 Å was formed on the hole transport region by co-depositing a host compound (weight ratio: 60:40) and a phosphorescent dopant (15%) described in Tables 2 and 3 below.

BCP was vacuum deposited on the light emitting layer to form a hole blocking layer having a thickness of 100 Å, compound ET3 and Liq were vacuum deposited together on the hole blocking layer to form an electron transport layer having a thickness of 300 Å, and Liq was deposited on the electron transport layer. was deposited to form an electron injection layer having a thickness of 10 Å, and an Al second electrode (cathode) having a thickness of 1200 Å was formed on the electron injection layer, thereby fabricating an organic light emitting device.

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices manufactured in Examples 1 to 9 and Comparative Example 1, were measured, and the T ₉₅ lifetime characteristics of Comparative Example 1 and Relative values for the external quantum efficiency are shown in Table 2 below.

host phosphorescent dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 1 Z1 Z2 P7 100 100 Example 1 H1 E1 P7 98 571 Example 2 H1 E2 P7 75 842 Example 3 H1 E3 P7 107 674 Example 4 H1 E4 P7 106 333 Example 5 H1 E5 P7 84 519 Example 6 H1 E6 P7 93 293 Example 7 H1 E7 P7 92 523 Example 8 H1 E8 P7 93 201 Example 9 H8 E1 P7 105 429

Referring to Table 2, compared to Comparative Example 1 including Z1 and Z2 compounds not containing a silyl group, an organic light emitting device including a light emitting layer including a combination of HT-host and ET-host of the present invention containing a silyl group is It was confirmed that T95 lifespan characteristics were remarkably improved while maintaining EQE efficiency. In particular, in the case of Example 2, life characteristics were improved by 842%.

Evaluation Example 5: Device Evaluation of Light-Emitting Device (2)

Examples 10 to 27 and Comparative Examples 2 to 19

A glass substrate on which an indium tin oxide (ITO) electrode (first electrode, anode) having a thickness of 1500 Å was formed was washed with ultrasonic waves in distilled water. After the distilled water cleaning was completed, the substrate was ultrasonically washed with solvents such as isopropyl alcohol, acetone, and methanol, dried, transferred to a plasma cleaner, cleaned for 5 minutes using oxygen plasma, and then transferred to a vacuum layerer.

Compound HT3 and compound HT-D2 were co-deposited on the ITO electrode of the glass substrate to form a hole injection layer having a thickness of 100 Å, and then compound HT3 was deposited on the hole injection layer to form a hole transport layer having a thickness of 1300 Å. Then, an electron blocking layer having a thickness of 100 Å was formed by depositing mCP on the hole transport layer to form a hole transport region.

A light emitting layer having a thickness of 400 Å was formed on the hole transport region by co-evaporation of a host compound (weight ratio: 60:40) and a TADF dopant compound (1.5 wt %) listed in Tables 3 to 20 below.

BCP was vacuum deposited on the light emitting layer to form a hole blocking layer having a thickness of 100 Å, compound ET3 and Liq were vacuum deposited together on the hole blocking layer to form an electron transport layer having a thickness of 300 Å, and Liq was deposited on the electron transport layer. was deposited to form an electron injection layer having a thickness of 10 Å, and an Al second electrode (cathode) having a thickness of 1200 Å was formed on the electron injection layer, thereby fabricating an organic light emitting device.

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices manufactured in Example 10 and Comparative Example 2, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 2 were measured. Relative values for efficiency are shown in Table 3 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 2 Z1 Z2 D1 100 100 Example 10 H1 E1 D1 134 526

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices manufactured in Example 11 and Comparative Example 3, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 3 were measured. Relative values for efficiency are shown in Table 4 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 3 Z1 Z2 D2 100 100 Example 11 H1 E1 D2 101 185

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices manufactured in Examples 12 and 28 and Comparative Example 4, were measured, and the T ₉₅ lifetime characteristics of Comparative Example 4 and Relative values for the external quantum efficiency are shown in Table 4 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 4 Z1 Z2 D3 100 100 Example 12 H1 E1 D3 94 163

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 13 and Comparative Example 5, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 5 were measured. Relative values for efficiency are shown in Table 6 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 5 Z1 Z2 D4 100 100 Example 13 H1 E1 D4 96 174

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices manufactured in Example 14 and Comparative Example 6, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 6 were measured. Relative values for efficiency are shown in Table 7 below.

host TADF dopant EQE rate (%) T ₉₅ Ratio (%) Comparative Example 6 Z1 Z2 D5 100 100 Example 14 H1 E1 D5 106 239

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices manufactured in Example 15 and Comparative Example 7, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 7 were measured. Relative values for efficiency are shown in Table 8 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 7 Z1 Z2 D6 100 100 Example 15 H1 E1 D6 109 263

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices manufactured in Example 16 and Comparative Example 8, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 8 were measured. Relative values for efficiency are shown in Table 9 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 8 Z1 Z2 D7 100 100 Example 16 H1 E1 D7 92 158

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 17 and Comparative Example 9, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 9 Relative values for efficiency are shown in Table 10 below.

host TADF dopant EQE rate (%) T ₉₅ Ratio (%) Comparative Example 9 Z1 Z2 D8 100 100 Example 17 H1 E1 D8 96 163

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 18 and Comparative Example 10, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 10 Relative values for efficiency are shown in Table 11 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 10 Z1 Z2 D9 100 100 Example 18 H1 E1 D9 100 217

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 19 and Comparative Example 11, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 11 Relative values for efficiency are shown in Table 12 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 11 Z1 Z2 D10 100 100 Example 19 H1 E1 D10 108 248

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 20 and Comparative Example 12, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 12 Relative values for efficiency are shown in Table 13 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 12 Z1 Z2 D11 100 100 Example 20 H1 E1 D11 111 295

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 21 and Comparative Example 13, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 13 Relative values for efficiency are shown in Table 14 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 13 Z1 Z2 D12 100 100 Example 21 H1 E1 D12 90 108

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 22 and Comparative Example 14, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 14 Relative values for efficiency are shown in Table 15 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 14 Z1 Z2 D13 100 100 Example 22 H1 E1 D13 95 196

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 23 and Comparative Example 15, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 15 Relative values for efficiency are shown in Table 16 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 15 Z1 Z2 D14 100 100 Example 23 H1 E1 D14 115 269

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 24 and Comparative Example 16, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 16 Relative values for efficiency are shown in Table 17 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 16 Z1 Z2 D15 100 100 Example 24 H1 E1 D15 97 198

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 25 and Comparative Example 17, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 17 Relative values for efficiency are shown in Table 18 below.

host TADF dopant EQE rate (%) T ₉₅ Ratio (%) Comparative Example 17 Z1 Z2 D16 100 100 Example 25 H1 E1 D16 90 206

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 26 and Comparative Example 18, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 18 Relative values for efficiency are shown in Table 19 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 18 Z1 Z2 D17 100 100 Example 26 H1 E1 D17 98 245

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Example 27 and Comparative Example 19, were measured, and the T ₉₅ lifetime characteristics and external quantum efficiencies of Comparative Example 19 Relative values for efficiency are shown in Table 20 below.

host TADF dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 19 Z1 Z2 D18 100 100 Example 27 H1 E1 D18 93 179

Referring to Tables 3 to 20, compared to Comparative Examples 2 to 19 containing Z1 and Z2 compounds not containing a silyl group, a light emitting layer containing a combination of the HT-host and ET-host of the present invention containing a silyl group It was confirmed that the T95 lifetime characteristics of the organic light emitting device were remarkably improved while maintaining the EQE efficiency. In particular, in the case of Example 10, it was confirmed that the life characteristics were remarkably improved by 526%.

Examples 28 to 38 and Comparative Examples 20 to 21

A glass substrate on which an indium tin oxide (ITO) electrode (first electrode, anode) having a thickness of 1500 Å was formed was washed with ultrasonic waves in distilled water. After the distilled water cleaning was completed, the substrate was ultrasonically washed with solvents such as isopropyl alcohol, acetone, and methanol, dried, transferred to a plasma cleaner, cleaned for 5 minutes using oxygen plasma, and then transferred to a vacuum layerer.

Compound HT3 and compound HT-D2 were co-deposited on the ITO electrode of the glass substrate to form a hole injection layer having a thickness of 100 Å, and then compound HT3 was deposited on the hole injection layer to form a hole transport layer having a thickness of 1300 Å. Then, an electron blocking layer having a thickness of 100 Å was formed by depositing mCP on the hole transport layer to form a hole transport region.

A light emitting layer having a thickness of 400 Å was formed on the hole transport region by co-evaporation of a host compound (weight ratio: 60:40), a sensorizer compound (15%), and a dopant compound (1.5%) described in Tables 21 and 22 below. .

BCP was vacuum deposited on the light emitting layer to form a hole blocking layer having a thickness of 100 Å, compound ET3 and Liq were vacuum deposited together on the hole blocking layer to form an electron transport layer having a thickness of 300 Å, and Liq was deposited on the electron transport layer. was deposited to form an electron injection layer having a thickness of 10 Å, and an Al second electrode (cathode) having a thickness of 1200 Å was formed on the electron injection layer, thereby fabricating an organic light emitting device.

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Examples 28 to 34 and Comparative Example 20, were measured, and the T ₉₅ lifetime characteristics of Comparative Example 20 and Relative values for the external quantum efficiency are shown in Table 21 below.

host Sensorizer: Dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 20 Z1 Z2 P7 D19 100 100 Example 28 H1 E1 P7 D19 97% 279% Example 29 H1 E2 P7 D19 73% 262% Example 30 H1 E3 P7 D19 103% 202% Example 31 H1 E4 P7 D19 101% 124% Example 32 H1 E5 P7 D19 87% 183% Example 33 H1 E7 P7 D19 98% 209% Example 34 H8 E1 P7 D19 91% 224%

The T ₉₅ lifetime characteristics and external quantum efficiency, which is the time required for the initial luminance to decrease by 95% for the organic light emitting devices prepared in Examples 35 to 38 and Comparative Example 21, were measured, and the T ₉₅ lifetime characteristics of Comparative Example 21 and Relative values for the external quantum efficiency are shown in Table 22 below.

host Sensorizer: Dopant EQE rate (%) T ₉₅ percentage (%) Comparative Example 21 Z1 Z2 P7 D3 100% 100% Example 35 H1 E1 P7 D3 95% 325% Example 36 H1 E3 P7 D3 99% 458% Example 37 H1 E6 P7 D3 93% 307% Example 38 H1 E8 P7 D3 94% 124%

Referring to Tables 21 and 22, compared to Comparative Examples 20 to 21 containing Z1 and Z2 compounds not containing a silyl group as hosts, a light emitting layer comprising a combination of HT-host and ET-host of the present invention containing a silyl group It was confirmed that the T95 lifetime characteristics of the organic light emitting device including the were significantly improved while maintaining the EQE efficiency. In particular, in the case of Examples 28 and 36, it was confirmed that the life characteristics were remarkably improved by 279% and 458%.

11: first electrode
12: hole transport region
15: light emitting layer
17: electron transport area
19: second electrode

Claims (20)

a first electrode;
a second electrode facing the first electrode; and
An intermediate layer interposed between the first electrode and the second electrode and including a first compound and a second compound,
The first compound includes a first silyl group-containing group and two carbazole-derived groups, wherein one carbazole-derived group of the two carbazole-derived groups is a member of the other carbazole-derived group. bonded through the N atom,
The second compound includes a second silyl group-containing group, a triazine group, and a carbazole-derived group,
At least one of the first compound and the second compound has a triplet energy level (T1) of 2.81eV or more, the organic light emitting device. According to claim 1,
The second compound has a structure in which a silyl group-containing group is bonded to at least one carbon of a triazine group, an organic light emitting device. According to claim 1,
The intermediate layer includes a light emitting layer,
The organic light emitting element, wherein the light emitting layer includes the first compound and the second compound. According to claim 1,
The first compound is a hole-transporting host compound,
The second compound is an electron-transporting host compound, an organic light emitting device. According to claim 3,
The organic light emitting device, wherein the light emitting layer further comprises one or more dopant compounds. According to claim 5,
The dopant compound includes a third compound, a fourth compound, or a combination thereof, an organic light emitting device. According to claim 1,
The first compound includes an organic light emitting device including a compound represented by Formula 1-1 or 1-2:
<Formula 1-1>

<Formula 1-2>

<Formula A>

In Formulas 1-1, 1-2 and A,
CY ₁₀ to CY ₁₉ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;
L ₁₁ to L ₁₄ are each independently a substituted or unsubstituted C ₁ -C ₂₀ alkylene group, a substituted or unsubstituted C ₂ -C ₂₀ alkenylene group, or a substituted or unsubstituted C ₅ -C ₆₀ carbocyclic group. group or a substituted or unsubstituted C ₁ -C ₆₀ heterocyclic group;
a11 to a14 are each independently an integer selected from 0 to 5;
When a11 is 0, L ₁₁ is absent and the N atom and CY ₁₇ are directly bonded, when a12 is 0, L ₁₂ is absent and the N atom and CY ₁₉ are directly bonded, and when a13 is 0, L ₁₃ is absent and Si atoms are directly bonded to CY ₁₀ to CY ₁₉ , and when a14 is 0, L ₁₄ is absent and Si is directly bonded to adjacent Si;
T ₁₀ to T ₁₉ are each independently a group represented by Formula A;
c10 to c19 are integers independently selected from 0 to 10;
the sum of c10, c11, c12, c13, and c14 is 1 or more;
The sum of c15, c16, c17, c18, and c19 is 1 or more;
n is an integer selected from 0 to 3;
R ₁₀ to R ₁₉ and R ₅₁ to R ₅₅ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amino group, and an amidino group. group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, substituted or unsubstituted C ₁ -C ₆₀ alkyl group, substituted or unsubstituted C ₂ -C ₆₀ alkenyl group , a substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ Heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group A group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )( Q ₇ ), -P(=0)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );
b10 to b19 are integers independently selected from 0 to 10;
b51 to b55 are integers independently selected from 0 to 5;
The above substituted C ₅ -C ₆₀ carbocyclic group, substituted C ₁ -C ₆₀ heterocyclic group, substituted C ₁ -C ₂₀ alkylene group, substituted C ₂ -C ₂₀ alkenylene group, substituted C ₁ -C ₆₀ alkyl group, substituted C ₂ -C ₆₀ alkenyl group, substituted C ₂ -C ₆₀ alkynyl group, substituted C ₁ -C ₆₀ alkoxy group, substituted C ₃ -C ₁₀ cycloalkyl group, substituted C ₁ - C ₁₀ heterocycloalkyl group, substituted C ₃ -C ₁₀ cycloalkenyl group, substituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted C ₆ -C ₆₀ aryl group, substituted C ₆ -C ₆₀ aryloxy group, The substituent of each of the substituted C ₆ -C ₆₀ arylthio group, the substituted C ₁ -C ₆₀ heteroaryl group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic heteropolycyclic group,
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ an alkynyl group or a C ₁ -C ₆₀ alkoxy group;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ - C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group , monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or a C ₁ -C ₆₀ alkyl group, substituted with any combination thereof, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group or C ₁ -C ₆₀ alkoxy group;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alkynyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ - C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group , -N(Q ₂₁ )(Q ₂₂ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=O)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ) or at least one unsubstituted or substituted with any combination thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkyl group Alkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent a non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group;
-N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=O)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or
any combination thereof;
ego,
The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; or a monovalent non-aromatic heterocondensed polycyclic group; According to claim 7,
CY ₁₀ to CY ₁₉ are independently of each other;
Benzene group, naphthalene group, anthracene group, phenanthrene group, pyrene group, furan group, thiophene group, pyrrole group, silol group, benzofuran group, benzothiophene group, indole group, indene group, benzosilol group, di Benzofuran group, dibenzothiophene group, carbazole group, fluorene group, dibenzosilol group, azabenzofuran group, azabenzothiophene group, azaindole group, azaindene group, azabenzosilol group, azadi A benzofuran group, an azadibenzothiophene group, an azacarbazole group, an azafluorene group, or an azadibenzosilol group, an organic light emitting device. According to claim 1,
The first compound is an organic compound including a compound represented by Formula 1-1-1, 1-1-2, 1-2-1, 1-2-2, 1-2-3, or 1-2-4 Light emitting element:
<Formula 1-1-1>

<Formula 1-1-2>

<Formula 1-2-1>

<Formula 1-2-2>

<Formula 1-2-3>

<Formula 1-2-4>

Among Formulas 1-1-1, 1-1-2, 1-2-1, 1-2-2, 1-2-3, and 1-2-4,
CY ₁₁ to CY ₁₆ , CY ₁₈ , CY ₁₉ , R ₁₀ to R ₁₉ , T ₁₀ to T ₁₉ , L ₁₁ , L ₁₂ , a11, a12, b11 to b16, b18, b19, c11 to c16, c18 and c19 respectively is as defined in clause 7,
b10 is an integer selected from 0 to 4, c10 is an integer selected from 0 to 4, the sum of b10 and c10 is 4,
b17 is an integer selected from 0 to 3, c17 is an integer selected from 0 to 3, and the sum of b17 and c17 is 3. According to claim 1,
The first compound is an organic light emitting device selected from compounds H1 to H23:

. According to claim 1,
The second compound is an organic light emitting device including a compound represented by Chemical Formula 2-1:
<Formula 2-1>

<Formula A>

In Formulas 2-1 and A,
CY ₂₁ and CY ₂₂ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;
L ₁₃ , L ₁₄ and L ₂₁ are each independently a substituted or unsubstituted C ₁ -C ₂₀ alkylene group, a substituted or unsubstituted C ₂ -C ₂₀ alkenylene group, or a substituted or unsubstituted C ₅ -C ₆₀ A carbocyclic group or a substituted or unsubstituted C ₁ -C ₆₀ heterocyclic group;
a13, a14 and a21 are each independently an integer selected from 0 to 5;
When a13 is 0, L ₁₃ is absent and Si atoms are directly bonded to CY ₁₀ to CY ₁₉ , when a14 is 0, L ₁₄ is absent and Si is directly bonded to adjacent Si, and when a21 is 0, L ₂₁ is absent. and the N atom is directly bonded to the C atom of the triazine group,
T ₂₁ Silver A group represented by Formula A,
c21 is 1 or 2;
n is an integer selected from 0 to 3;
R ₂₁ to R ₂₃ and R ₅₁ to R ₅₅ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amino group, and an amidino group. group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, substituted or unsubstituted C ₁ -C ₆₀ alkyl group, substituted or unsubstituted C ₂ -C ₆₀ alkenyl group , a substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, a substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, a substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, a substituted or unsubstituted C ₁ -C ₁₀ Heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group A group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )( Q ₇ ), -P(=0)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );
b21 and b22 are integers independently selected from 0 to 10;
b23 is 0 or 1;
b51 to b55 are integers independently selected from 0 to 5;
The above substituted C ₅ -C ₆₀ carbocyclic group, substituted C ₁ -C ₆₀ heterocyclic group, substituted C ₁ -C ₂₀ alkylene group, substituted C ₂ -C ₂₀ alkenylene group, substituted C ₁ -C ₂₀ alkylene group, substituted C ₂ -C ₂₀ alkenylene group, substituted C ₁ -C ₆₀ alkyl group, substituted C ₂ -C ₆₀ alkenyl group, substituted C ₂ -C ₆₀ alkynyl group, substituted C ₁ -C ₆₀ alkoxy group, substituted C ₃ -C ₁₀ cycloalkyl group, substituted C ₁ -C ₁₀ heterocycloalkyl group, substituted C ₃ -C ₁₀ cycloalkenyl group, substituted C ₁ -C ₁₀ heterocycloalkenyl group, Substituted C ₆ -C ₆₀ aryl group, substituted C ₆ -C ₆₀ aryloxy group, substituted C ₆ -C ₆₀ arylthio group, substituted C ₁ -C ₆₀ heteroaryl group, substituted monovalent non-aromatic group The condensed polycyclic group and the substituent of the substituted monovalent non-aromatic heterocondensed polycyclic group are
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ an alkynyl group or a C ₁ -C ₆₀ alkoxy group;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ - C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group , monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or a C ₁ -C ₆₀ alkyl group, substituted with any combination thereof, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group or C ₁ -C ₆₀ alkoxy group;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt thereof, sulfonic acid group or its salt thereof, phosphoric acid group or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alkynyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ - C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group , -N(Q ₂₁ )(Q ₂₂ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=O)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ) or at least one unsubstituted or substituted with any combination thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkyl group Alkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent a non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group;
-N(Q ₃₁ )(Q ₃₂ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=O)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or
any combination thereof;
ego,
The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; or a monovalent non-aromatic heterocondensed polycyclic group; According to claim 11,
CY ₂₁ and CY ₂₂ are independently of each other;
Benzene group, naphthalene group, anthracene group, phenanthrene group, pyrene group, furan group, thiophene group, pyrrole group, silol group, benzofuran group, benzothiophene group, indole group, indene group, benzosilol group, di Benzofuran group, dibenzothiophene group, carbazole group, fluorene group, dibenzosilol group, azabenzofuran group, azabenzothiophene group, azaindole group, azaindene group, azabenzosilol group, azadi A benzofuran group, an azadibenzothiophene group, an azacarbazole group, an azafluorene group, or an azadibenzosilol group, an organic light emitting device. According to claim 11,
The second compound is an organic light emitting device including a compound represented by Formula 2-1-1 or 2-2-2:
<Formula 2-1-1>

<Formula 2-2-2>

In Chemical Formulas 2-1-1 and 2-2-2,
CY ₂₁ , CY ₂₂ , L ₂₁ , a21, R ₂₁ , R ₂₂ , b21, b22, and R ₂₃ refer to the description in claim 11,
For details on each of T _21a and T _21b , refer to the description of T ₂₁ of claim 11. According to claim 1,
The second compound is an organic light emitting device selected from the following compounds E1 to E17:

. According to claim 6,
The third compound is an organic light emitting device including an organo-metallic compound represented by Formula 3 or Formula 5:
<Formula 3>

In Formula 3,
M is a transition metal;
X ₁₁ to X ₁₄ are each independently C or N;
Two of the bonds between X ₁₁ and M, the bond between X ₁₂ and M, the bond between X ₁₃ and M, and the bond between X ₁₄ and M are coordinate bonds, and the other two are covalent bonds;
ring CY ₃₁ to ring CY ₃₄ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;
T ₃₁ is a single bond, a double bond, *-N(R _35a )-*', *-B(R _35a )-*', *-P(R _35a )-*', *-C(R _35a )( R _35b )-*', *-Si(R _35a )(R _35b )-*', *-Ge(R _35a )(R _35b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _35a )= *', *=C(R _35a )-*', *-C(R _35a )=C(R _35b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,
T ₃₂ is a single bond, a double bond, *-N(R _36a )-*', *-B(R _36a )-*', *-P(R _36a )-*', *-C(R _36a )( R _36b )-*', *-Si(R _36a )(R _36b )-*', *-Ge(R _36a )(R _36b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _36a )= *', *=C(R _36a )-*', *-C(R _36a )=C(R _36b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,
T ₃₃ is a single bond, a double bond, *-N(R _37a )-*', *-B(R _37a )-*', *-P(R _37a )-*', *-C(R _37a )( R _37b )-*', *-Si(R _37a )(R _37b )-*', *-Ge(R _37a )(R _37b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _37a )= *', *=C(R _37a )-*', *-C(R _37a )=C(R _37b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,
T ₃₄ is a single bond, a double bond, *-N(R _38a )-*', *-B(R _38a )-*', *-P(R _38a )-*', *-C(R _38a )( R _38b )-*', *-Si(R _38a )(R _38b )-*', *-Ge(R _38a )(R _38b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _38a )= *', *=C(R _38a )-*', *-C(R _38a )=C(R _38b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,
n31 to n34 are each independently an integer of 0 to 5, and 3 or more of n31 to n34 are each independently an integer of 1 to 5;
When n31 is 0, T ₃₁ does not exist, when n32 is 0, T ₃₂ does not exist, when n33 is 0, T ₃₃ does not exist, and when n34 is 0, T ₃₄ does not exist;
When n31 is 2 or more, two or more T ₃₁ are the same or different, when n32 is 2 or more, two or more T ₃₂ are the same or different, and when n33 is 2 or more, two or more T ₃₃ are the same or different, and n34 is When 2 or more, 2 or more T ₃₄ are the same as or different from each other,
R ₃₁ to R ₃₄ , R _35a , R _35b , R _36a , R _36b , R _37a , R _37b , R _38a , and R _38b are each independently hydrogen, deuterium, -F, -Cl, -Br, -I , -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, A substituted or unsubstituted C ₆ -C ₆₀ aryl group, a substituted or unsubstituted C ₇ -C ₆₀ alkylaryl group, a substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted C ₂ -C ₆₀ alkylheteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or An unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Si(Q ₃ )(Q ₄ )(Q ₅ ), -Ge(Q ₃ )(Q ₄ )( Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=0)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );
a31 to a34 are each independently an integer of 0 to 20;
Two or more of a31 R ₃₁ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10a or a substituted or unsubstituted group with at least one R _10a can form a C ₁ -C ₃₀ heterocyclic group;
Two or more of a32 R ₃₂ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -unsubstituted or substituted with at least one R _10a . can form a C ₃₀ heterocyclic group;
Two or more of a33 R ₃₃ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -unsubstituted or substituted with at least one R _10a . can form a C ₃₀ heterocyclic group;
Two or more of a34 R ₃₄ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -unsubstituted or substituted with at least one R _10a . can form a C ₃₀ heterocyclic group;
Two or more of R ₃₁ to R ₃₄ , R _35a , R _35b , R _36a , R _36b , R _37a , R _37b , R _38a , and R _38b , optionally bonded to each other, are substituted or unsubstituted with at least one R _10a . may form a cyclic C ₅ -C ₃₀ carbocyclic group or a substituted or unsubstituted C ₁ -C ₃₀ heterocyclic group with at least one R _10a ;
For the description of R _10a , refer to the description of R ₃₁ ,
* and *' are binding sites with neighboring atoms, respectively;
The substituted C ₁ -C ₆₀ alkyl group, the substituted C ₂ -C ₆₀ alkenyl group, the substituted C ₂ -C ₆₀ alkynyl group, the substituted C ₁ -C ₆₀ alkoxy group, the substituted C ₃ -C ₁₀ cycloalkyl group, A substituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted C ₆ -C ₆₀ aryl group, a substituted C ₇ -C ₆₀ alkylaryl group, substituted C ₆ -C ₆₀ aryloxy group, substituted C ₆ -C ₆₀ arylthio group, substituted C ₁ -C ₆₀ heteroaryl group, substituted C ₂ -C ₆₀ alkylheteroaryl group, Substituents of the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic heterocondensed polycyclic group,
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky a yl group or a C ₁ -C ₆₀ alkoxy group;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, Monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Si(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or any thereof a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, or a C ₁ -C ₆₀ alkoxy group, substituted with a combination of;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky Nyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=0)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ), or a C ₃ -C ₁₀ cycloalkyl group unsubstituted or substituted with any combination thereof, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ aryl group an organic group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed polycyclic group;
-N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=0)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or
any combination thereof;
ego,
The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; Or a monovalent non-aromatic condensed heteropolycyclic group;
<Formula 5>
M ₅₁ (L ₅₁ ) _n51 (L ₅₂ ) _n52
In Formula 5,
M ₅₁ is a transition metal;
L ₅₁ is a ligand represented by Formula 5A, L ₅₂ is a ligand represented by Formula 5B;
<Formula 5A><Formula5B>

n51 is 1, 2 or 3, n52 is 0, 1 or 2;
Y ₅₁ to Y ₅₄ are each independently C or N;
Ring CY ₅₁ to Ring CY ₅₄ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;
R ₅₁ to R ₅₄ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, and a hydra An organic group, a carboxylic acid group or its salt thereof, a sulfonic acid group or its salt thereof, a phosphoric acid group or its salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₁ -C ₆₀ alkylthio group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, substituted or Unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₅₁ )(Q ₅₂ ), -Si(Q ₅₃ )(Q ₅₄ )(Q ₅₅ ) , -Ge(Q ₅₃ )(Q ₅₄ )(Q ₅₅ ), -B(Q ₅₆ )(Q ₅₇ ), -P(=0)(Q ₅₈ )(Q ₅₉ ), or -P(Q ₅₈ )( Q ₅₉ ), and
b51 to b54 are independently integers from 0 to 20;
Q ₅₁ to Q ₅₉ are independently of each other;
-CH ₃ , -CD ₃ , -CD ₂ H, -CDH ₂ , -CH ₂ CH ₃ , -CH ₂ CD ₃ , -CH ₂ CD ₂ H, -CH ₂ CDH ₂ , -CHDCH ₃ , -CHDCD ₂ H , -CHDCDH ₂ , -CHDCD ₃ , -CD ₂ CD ₃ , -CD ₂ CD ₂ H or -CD ₂ CDH ₂ ; or
Deuterium, C ₁ -C ₁₀ Alkyl group, phenyl group, or unsubstituted or substituted with any combination thereof, n -propyl group, isopropyl group, n -butyl group, sec -butyl group, isobutyl group, tert -butyl group , n -pentyl group, tert -pentyl group, neopentyl group, isopentyl group, sec -pentyl group, 3-pentyl group, sec -isopentyl group, phenyl group, biphenyl group or naphthyl group. According to claim 15,
The third compound is an organic light emitting device selected from P1 to P42:

. According to claim 6,
The fourth compound is a polycyclic compound represented by Formula 4, an organic light emitting device:
<Formula 4>

In Formula 4,
Z is B or N;
rings CY ₄₁ to CY ₄₃ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;
Y ₄₁ is *-N(R ₄₄ )-*', *-B(R ₄₄ )-*', *-P(R ₄₄ )-*', *-C(R ₄₄ )(R ₄₅ )-*' , *-Si(R ₄₄ )(R ₄₅ )-*', *-Ge(R ₄₄ )(R ₄₅ )-*', *-O-*', *-S-*', *-Se-* ', *-C(=O)-*', or *-S(=O) ₂ -*',
Y ₄₂ is *-N(R ₄₆ )-*', *-B(R ₄₆ )-*', *-P(R ₄₆ )-*', *-C(R ₄₆ )(R ₄₇ )-*' , *-Si(R ₄₆ )(R ₄₇ )-*', *-Ge(R ₄₆ )(R ₄₇ )-*', *-O-*', *-S-*', *-Se-* ', *-C(=O)-*', or *-S(=O) ₂ -*',
Y ₄₃ is *-N(R ₄₈ )-*', *-B(R ₄₈ )-*', *-P(R ₄₈ )-*', *-C(R ₄₈ )(R ₄₉ )-*' , *-Si(R ₄₈ )(R ₄₉ )-*', *-Ge(R ₄₈ )(R ₄₉ )-*', *-O-*', *-S-*', *-Se-* ', *-C(=O)-*', or *-S(=O) ₂ -*',
b41 to b43 are each independently 0 or 1;
When b41 is 0, Y ₄₁ does not exist, when b42 is 0, Y ₄₂ does not exist, when b43 is 0, Y ₄₃ does not exist,
R ₄₁ to R ₄₉ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrazone group, and a carboxylic acid group. A substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ - C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ Cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₇ -C ₆₀ alkylaryl group , A substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted C ₂ -C ₆₀ Alkylheteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Si (Q ₃ )(Q ₄ )(Q ₅ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=O)(Q ₈ )( Q ₉ ), or -P(Q ₈ )(Q ₉ );
a41 to a43 are each independently an integer of 0 to 20;
Two or more of a41 R ₄₁ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b or a substituted or unsubstituted group with at least one R _10b can form a C ₁ -C ₃₀ heterocyclic group;
Two or more of a42 R ₄₂ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b or a substituted or unsubstituted group with at least one R _10b can form a C ₁ -C ₃₀ heterocyclic group;
Two or more of a43 R ₄₃ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b substituted or unsubstituted with at least one R _10b can form a C ₁ -C ₃₀ heterocyclic group;
Two or more of R ₄₁ to R ₄₉ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b or C ₁ unsubstituted or substituted with at least one R _10b . -C ₃₀ can form a heterocyclic group;
For the description of R _10b , refer to the description of R ₄₁ ,
* and *' are binding sites with neighboring atoms, respectively;
The substituted C ₁ -C ₆₀ alkyl group, the substituted C ₂ -C ₆₀ alkenyl group, the substituted C ₂ -C ₆₀ alkynyl group, the substituted C ₁ -C ₆₀ alkoxy group, the substituted C ₃ -C ₁₀ cycloalkyl group, A substituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted C ₆ -C ₆₀ aryl group, a substituted C ₇ -C ₆₀ alkylaryl group, substituted C ₆ -C ₆₀ aryloxy group, substituted C ₆ -C ₆₀ arylthio group, substituted C ₁ -C ₆₀ heteroaryl group, substituted C ₂ -C ₆₀ alkylheteroaryl group, Substituents of the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic heterocondensed polycyclic group,
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky a yl group or a C ₁ -C ₆₀ alkoxy group;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, Monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Si(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or any thereof a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, or a C ₁ -C ₆₀ alkoxy group, substituted with a combination of;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky Nyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=0)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ), or a C ₃ -C ₁₀ cycloalkyl group unsubstituted or substituted with any combination thereof, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ aryl group an organic group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed polycyclic group;
-N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=0)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or
any combination thereof;
ego,
The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; or a monovalent non-aromatic heterocondensed polycyclic group; According to claim 17,
The fourth compound is an organic light emitting device selected from D1 to D30:

a first electrode;
a second electrode facing the first electrode; and
An intermediate layer interposed between the first electrode and the second electrode and having a light emitting layer including a first compound, a second compound, and a third compound,
The first compound includes a first silyl group-containing group and two carbazole-derived groups, wherein one carbazole-derived group of the two carbazole-derived groups is a member of the other carbazole-derived group. bonded through the N atom,
The second compound includes a second silyl group-containing group, a triazine group, and a carbazole-derived group,
The third compound includes an organo-metallic compound represented by Formula 3 or Formula 5, an organic light emitting device:
<Formula 3>

In Formula 3,
M is a transition metal;
X ₁₁ to X ₁₄ are each independently C or N;
Two of the bonds between X ₁₁ and M, the bond between X ₁₂ and M, the bond between X ₁₃ and M, and the bond between X ₁₄ and M are coordinate bonds, and the other two are covalent bonds;
ring CY ₃₁ to ring CY ₃₄ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;
T ₃₁ is a single bond, a double bond, *-N(R _35a )-*', *-B(R _35a )-*', *-P(R _35a )-*', *-C(R _35a )( R _35b )-*', *-Si(R _35a )(R _35b )-*', *-Ge(R _35a )(R _35b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _35a )= *', *=C(R _35a )-*', *-C(R _35a )=C(R _35b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,
T ₃₂ is a single bond, a double bond, *-N(R _36a )-*', *-B(R _36a )-*', *-P(R _36a )-*', *-C(R _36a )( R _36b )-*', *-Si(R _36a )(R _36b )-*', *-Ge(R _36a )(R _36b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _36a )= *', *=C(R _36a )-*', *-C(R _36a )=C(R _36b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,
T ₃₃ is a single bond, a double bond, *-N(R _37a )-*', *-B(R _37a )-*', *-P(R _37a )-*', *-C(R _37a )( R _37b )-*', *-Si(R _37a )(R _37b )-*', *-Ge(R _37a )(R _37b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _37a )= *', *=C(R _37a )-*', *-C(R _37a )=C(R _37b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,
T ₃₄ is a single bond, a double bond, *-N(R _38a )-*', *-B(R _38a )-*', *-P(R _38a )-*', *-C(R _38a )( R _38b )-*', *-Si(R _38a )(R _38b )-*', *-Ge(R _38a )(R _38b )-*', *-S-*', *-Se-*' , *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ₂ -*', *-C(R _38a )= *', *=C(R _38a )-*', *-C(R _38a )=C(R _38b )-*', *-C(=S)-*', *-C≡C-*' , a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -C ₃₀ heterocyclic group optionally substituted with at least one R _10a ,
n31 to n34 are each independently an integer of 0 to 5, and 3 or more of n31 to n34 are each independently an integer of 1 to 5;
When n31 is 0, T ₃₁ does not exist, when n32 is 0, T ₃₂ does not exist, when n33 is 0, T ₃₃ does not exist, and when n34 is 0, T ₃₄ does not exist;
When n31 is 2 or more, two or more T ₃₁ are the same or different, when n32 is 2 or more, two or more T ₃₂ are the same or different, and when n33 is 2 or more, two or more T ₃₃ are the same or different, and n34 is When 2 or more, 2 or more T ₃₄ are the same as or different from each other,
R ₃₁ to R ₃₄ , R _35a , R _35b , R _36a , R _36b , R _37a , R _37b , R _38a , and R _38b are each independently hydrogen, deuterium, -F, -Cl, -Br, -I , -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , -SF ₅ , hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group , A carboxylic acid group or its salt thereof, a sulfonic acid group or its salt thereof, a phosphoric acid group or its salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted Cyclic C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₇ -C ₆₀ alkyl Aryl group, substituted or unsubstituted C ₆ -C ₆₀ Aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ Arylthio group, substituted or unsubstituted C ₁ -C ₆₀ Heteroaryl group, substituted or unsubstituted C ₂ -C ₆₀ Alkylheteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Si(Q ₃ )(Q ₄ )(Q ₅ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=O)(Q ₈ )(Q ₉ ), or -P(Q ₈ )(Q ₉ );
a31 to a34 are each independently an integer of 0 to 20;
Two or more of a31 R ₃₁ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10a or a substituted or unsubstituted group with at least one R _10a can form a C ₁ -C ₃₀ heterocyclic group;
Two or more of a32 R ₃₂ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -unsubstituted or substituted with at least one R _10a . can form a C ₃₀ heterocyclic group;
Two or more of a33 R ₃₃ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -unsubstituted or substituted with at least one R _10a . can form a C ₃₀ heterocyclic group;
Two or more of a34 R ₃₄ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group optionally substituted with at least one R _10a or a C ₁ -unsubstituted or substituted with at least one R _10a . can form a C ₃₀ heterocyclic group;
Two or more of R ₃₁ to R ₃₄ , R _35a , R _35b , R _36a , R _36b , R _37a , R _37b , R _38a , and R _38b , optionally bonded to each other, are substituted or unsubstituted with at least one R _10a . may form a cyclic C ₅ -C ₃₀ carbocyclic group or a substituted or unsubstituted C ₁ -C ₃₀ heterocyclic group with at least one R _10a ;
For the description of R _10a , refer to the description of R ₃₁ ,
* and *' are binding sites with neighboring atoms, respectively;
The substituted C ₁ -C ₆₀ alkyl group, the substituted C ₂ -C ₆₀ alkenyl group, the substituted C ₂ -C ₆₀ alkynyl group, the substituted C ₁ -C ₆₀ alkoxy group, the substituted C ₃ -C ₁₀ cycloalkyl group, A substituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted C ₆ -C ₆₀ aryl group, a substituted C ₇ -C ₆₀ alkylaryl group, substituted C ₆ -C ₆₀ aryloxy group, substituted C ₆ -C ₆₀ arylthio group, substituted C ₁ -C ₆₀ heteroaryl group, substituted C ₂ -C ₆₀ alkylheteroaryl group, Substituents of the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic heterocondensed polycyclic group,
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky a yl group or a C ₁ -C ₆₀ alkoxy group;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, Monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Si(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or any thereof a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, or a C ₁ -C ₆₀ alkoxy group, substituted with a combination of;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky Nyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=0)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ), or a C ₃ -C ₁₀ cycloalkyl group unsubstituted or substituted with any combination thereof, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ aryl group an organic group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed polycyclic group;
-N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=0)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or
any combination thereof;
ego,
The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; Or a monovalent non-aromatic condensed heteropolycyclic group;
<Formula 5>
M(L ₅₁ ) _n51 (L ₅₂ ) _n52
In Formula 5,
M is a transition metal;
L ₅₁ is a ligand represented by Formula 5A, L ₅₂ is a ligand represented by Formula 5B;
<Formula 5A><Formula5B>

n51 is 1, 2 or 3, n52 is 0, 1 or 2;
Y ₅₁ to Y ₅₄ are each independently C or N;
Ring CY ₅₁ to Ring CY ₅₄ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;
R ₅₁ to R ₅₄ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, and a hydra An organic group, a carboxylic acid group or its salt thereof, a sulfonic acid group or its salt thereof, a phosphoric acid group or its salt thereof, a substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₁ -C ₆₀ alkylthio group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, substituted or Unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, substituted or unsubstituted C ₆ -C ₆₀ arylthio group, substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₅₁ )(Q ₅₂ ), -Si(Q ₅₃ )(Q ₅₄ )(Q ₅₅ ) , -Ge(Q ₅₃ )(Q ₅₄ )(Q ₅₅ ), -B(Q ₅₆ )(Q ₅₇ ), -P(=0)(Q ₅₈ )(Q ₅₉ ), or -P(Q ₅₈ )( Q ₅₉ ), and
b51 to b54 are independently integers from 0 to 20;
Q ₅₁ to Q ₅₉ are independently of each other;
-CH ₃ , -CD ₃ , -CD ₂ H, -CDH ₂ , -CH ₂ CH ₃ , -CH ₂ CD ₃ , -CH ₂ CD ₂ H, -CH ₂ CDH ₂ , -CHDCH ₃ , -CHDCD ₂ H , -CHDCDH ₂ , -CHDCD ₃ , -CD ₂ CD ₃ , -CD ₂ CD ₂ H or -CD ₂ CDH ₂ ; or
Deuterium, C ₁ -C ₁₀ Alkyl group, phenyl group, or unsubstituted or substituted with any combination thereof, n -propyl group, isopropyl group, n -butyl group, sec -butyl group, isobutyl group, tert -butyl group , n -pentyl group, tert -pentyl group, neopentyl group, isopentyl group, sec -pentyl group, 3-pentyl group, sec -isopentyl group, phenyl group, biphenyl group or naphthyl group.
a first electrode;
a second electrode facing the first electrode; and
An intermediate layer interposed between the first electrode and the second electrode and having a light emitting layer including a first compound, a second compound, and a fourth compound,
The first compound includes a first silyl group-containing group and two carbazole-derived groups, wherein one carbazole-derived group of the two carbazole-derived groups is a member of the other carbazole-derived group. bonded through the N atom,
The second compound includes a second silyl group-containing group, a triazine group, and a carbazole-derived group,
The fourth compound includes a polycyclic compound represented by Chemical Formula 4, an organic light emitting device:
<Formula 4>

In Formula 4,
Z is B or N;
rings CY ₄₁ to CY ₄₃ are each independently a C ₅ -C ₃₀ carbocyclic group or a C ₁ -C ₃₀ heterocyclic group;
Y ₄₁ is *-N(R ₄₄ )-*', *-B(R ₄₄ )-*', *-P(R ₄₄ )-*', *-C(R ₄₄ )(R ₄₅ )-*' , *-Si(R ₄₄ )(R ₄₅ )-*', *-Ge(R ₄₄ )(R ₄₅ )-*', *-O-*', *-S-*', *-Se-* ', *-C(=O)-*', or *-S(=O) ₂ -*',
Y ₄₂ is *-N(R ₄₆ )-*', *-B(R ₄₆ )-*', *-P(R ₄₆ )-*', *-C(R ₄₆ )(R ₄₇ )-*' , *-Si(R ₄₆ )(R ₄₇ )-*', *-Ge(R ₄₆ )(R ₄₇ )-*', *-O-*', *-S-*', *-Se-* ', *-C(=O)-*', or *-S(=O) ₂ -*',
Y ₄₃ is *-N(R ₄₈ )-*', *-B(R ₄₈ )-*', *-P(R ₄₈ )-*', *-C(R ₄₈ )(R ₄₉ )-*' , *-Si(R ₄₈ )(R ₄₉ )-*', *-Ge(R ₄₈ )(R ₄₉ )-*', *-O-*', *-S-*', *-Se-* ', *-C(=O)-*', or *-S(=O) ₂ -*',
b41 to b43 are each independently 0 or 1;
When b41 is 0, Y ₄₁ does not exist, when b42 is 0, Y ₄₂ does not exist, when b43 is 0, Y ₄₃ does not exist,
R ₄₁ to R ₄₉ are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ₅ , a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrazone group, and a carboxylic acid group. A substituted or unsubstituted C ₁ -C ₆₀ alkyl group, a substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, a substituted or unsubstituted C ₂ - C ₆₀ alkynyl group, substituted or unsubstituted C ₁ -C ₆₀ alkoxy group, substituted or unsubstituted C ₃ -C ₁₀ cycloalkyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkyl group, substituted or unsubstituted C ₃ -C ₁₀ Cycloalkenyl group, substituted or unsubstituted C ₁ -C ₁₀ heterocycloalkenyl group, substituted or unsubstituted C ₆ -C ₆₀ aryl group, substituted or unsubstituted C ₇ -C ₆₀ alkylaryl group , A substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, a substituted or unsubstituted C ₆ -C ₆₀ arylthio group, a substituted or unsubstituted C ₁ -C ₆₀ heteroaryl group, a substituted or unsubstituted C ₂ -C ₆₀ Alkylheteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₁ )(Q ₂ ), -Si (Q ₃ )(Q ₄ )(Q ₅ ), -Ge(Q ₃ )(Q ₄ )(Q ₅ ), -B(Q ₆ )(Q ₇ ), -P(=O)(Q ₈ )( Q ₉ ), or -P(Q ₈ )(Q ₉ );
a41 to a43 are each independently an integer of 0 to 20;
Two or more of a41 R ₄₁ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b or a substituted or unsubstituted group with at least one R _10b can form a C ₁ -C ₃₀ heterocyclic group;
Two or more of a42 R ₄₂ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b or a substituted or unsubstituted group with at least one R _10b can form a C ₁ -C ₃₀ heterocyclic group;
Two or more of a43 R ₄₃ are optionally bonded to each other to form a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b substituted or unsubstituted with at least one R _10b can form a C ₁ -C ₃₀ heterocyclic group;
Two or more of R ₄₁ to R ₄₉ , optionally bonded to each other, are a C ₅ -C ₃₀ carbocyclic group unsubstituted or substituted with at least one R _10b or C ₁ unsubstituted or substituted with at least one R _10b . -C ₃₀ can form a heterocyclic group;
For the description of R _10b , refer to the description of R ₄₁ ,
* and *' are binding sites with neighboring atoms, respectively;
The substituted C ₁ -C ₆₀ alkyl group, the substituted C ₂ -C ₆₀ alkenyl group, the substituted C ₂ -C ₆₀ alkynyl group, the substituted C ₁ -C ₆₀ alkoxy group, the substituted C ₃ -C ₁₀ cycloalkyl group, A substituted C ₁ -C ₁₀ heterocycloalkyl group, a substituted C ₃ -C ₁₀ cycloalkenyl group, a substituted C ₁ -C ₁₀ heterocycloalkenyl group, a substituted C ₆ -C ₆₀ aryl group, a substituted C ₇ -C ₆₀ alkylaryl group, substituted C ₆ -C ₆₀ aryloxy group, substituted C ₆ -C ₆₀ arylthio group, substituted C ₁ -C ₆₀ heteroaryl group, substituted C ₂ -C ₆₀ alkylheteroaryl group, Substituents of the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic heterocondensed polycyclic group,
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky a yl group or a C ₁ -C ₆₀ alkoxy group;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, Monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ₁₁ )(Q ₁₂ ), -Si(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -Ge(Q ₁₃ )(Q ₁₄ )(Q ₁₅ ), -B(Q ₁₆ )(Q ₁₇ ), -P(=0)(Q ₁₈ )(Q ₁₉ ), -P(Q ₁₈ )(Q ₁₉ ), or any thereof a C ₁ -C ₆₀ alkyl group, a C ₂ -C ₆₀ alkenyl group, a C ₂ -C ₆₀ alkynyl group, or a C ₁ -C ₆₀ alkoxy group, substituted with a combination of;
Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , a hydroxyl group, a cyano group, a nitro group, Amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt thereof, sulfonic acid or its salt thereof, phosphoric acid or its salt thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ Alkenyl group, C ₂ -C ₆₀ Alky Nyl group, C ₁ -C ₆₀ alkoxy group, C ₃ -C ₁₀ cycloalkyl group, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero condensed polycyclic group, -N(Q ₂₁ )(Q ₂₂ ), -Si(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -Ge(Q ₂₃ )(Q ₂₄ )(Q ₂₅ ), -B(Q ₂₆ )(Q ₂₇ ), -P(=0)(Q ₂₈ )(Q ₂₉ ), -P(Q ₂₈ )(Q ₂₉ ), or a C ₃ -C ₁₀ cycloalkyl group unsubstituted or substituted with any combination thereof, C ₁ -C ₁₀ heterocycloalkyl group, C ₃ -C ₁₀ cycloalkenyl group, C ₁ -C ₁₀ heterocycloalkenyl group, C ₆ -C ₆₀ aryl group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ aryl group an organic group, a C ₁ -C ₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed polycyclic group;
-N(Q ₃₁ )(Q ₃₂ ), -Si(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -Ge(Q ₃₃ )(Q ₃₄ )(Q ₃₅ ), -B(Q ₃₆ )(Q ₃₇ ), -P(=0)(Q ₃₈ )(Q ₃₉ ) or -P(Q ₃₈ )(Q ₃₉ ); or
any combination thereof;
ego,
The Q ₁ to Q ₉ , Q ₁₁ to Q ₁₉ , Q ₂₁ to Q ₂₉ , and Q ₃₁ to Q ₃₉ may be each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; amidino group; hydrazine group; hydrazone group; a carboxylic acid group or a salt thereof; sulfonic acid groups or salts thereof; a phosphoric acid group or a salt thereof; a C ₁ -C ₆₀ alkyl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₂ -C ₆₀ alkenyl group; C ₂ -C ₆₀ alkynyl group; C ₁ -C ₆₀ alkoxy group; C ₃ -C ₁₀ cycloalkyl group; C ₁ -C ₁₀ heterocycloalkyl group; C ₃ -C ₁₀ cycloalkenyl group; C ₁ -C ₁₀ heterocycloalkenyl group; a C ₆ -C ₆₀ aryl group unsubstituted or substituted with heavy hydrogen, a C ₁ -C ₆₀ alkyl group, a C ₆ -C ₆₀ aryl group, or any combination thereof; C ₆ -C ₆₀ aryloxy group; C ₆ -C ₆₀ arylthio group; C ₁ -C ₆₀ heteroaryl group; monovalent non-aromatic condensed polycyclic groups; or a monovalent non-aromatic heterocondensed polycyclic group;

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