KR20240109581A - Light emitting device and electronic apparatus including the light emitting device - Google Patents

Abstract

first electrode; a second electrode opposite the first electrode; an intermediate layer disposed between the first electrode and the second electrode and including a light emitting layer; and a capping layer disposed outside the first electrode or outside the second electrode, wherein the light emitting layer includes a first emitter, and the first emitter emits first light having a maximum emission wavelength of 470 nm or less, and , wherein the first emitter includes platinum (Pt) and the capping layer includes an amine compound, a light emitting device, an electronic device including the light emitting device, and a consumer product including the light emitting device are provided.

Description

Light emitting device and electronic apparatus including the light emitting device}

It relates to a light emitting device and an electronic device including the light emitting device.

Among light emitting devices, organic light emitting devices are self-emitting devices that not only have a wide viewing angle and excellent contrast, but also have a fast response time and excellent brightness, driving voltage, and response speed characteristics.

The organic light emitting device has a first electrode disposed on an upper part of a substrate, and a hole transport region, a light emitting layer, an electron transport region, and a second electrode are sequentially formed on the first electrode. It can have a structure. Holes injected from the first electrode move to the light-emitting layer via the hole transport region, and electrons injected from the second electrode move to the light-emitting layer via the electron transport region. Carriers such as holes and electrons recombine in the light emitting layer region to generate excitons. Light is generated as this exciton changes from the excited state to the ground state.

To provide a light emitting device with improved efficiency and an electronic device including the light emitting device.

According to one aspect,

first electrode;

a second electrode opposite the first electrode;

an intermediate layer disposed between the first electrode and the second electrode and including a light emitting layer; and

It includes a capping layer disposed on the outside of the first electrode or on the outside of the second electrode,

The light emitting layer includes a first emitter,

The first emitter emits first light having a maximum emission wavelength of 470 nm or less,

The first emitter includes platinum (Pt),

The capping layer includes an amine compound,

The first emitter satisfies at least one of the following conditions 1-1 and 1-2,

The amine compound has a refractive index of 1.84 or more for light at 450 nm, and satisfies at least one of the following conditions 2-1 and 2-2. A light emitting device is provided:

<Condition 1-1>

HOMO energy level is -4.5 eV or less

<Condition 1-2>

LUMO energy level is below -1.0 eV

<Condition 2-1>

HOMO energy level is -5.36 eV or less

<Condition 2-2>

LUMO energy level is -1.5 eV or less.

According to the other aspect,

first electrode;

a second electrode opposite the first electrode;

an intermediate layer disposed between the first electrode and the second electrode and including a light emitting layer; and

It includes a capping layer disposed on the outside of the first electrode or on the outside of the second electrode,

The light-emitting layer includes an organometallic compound represented by the following formula (1),

The capping layer includes an amine compound,

The amine compound is a light emitting device containing three or more moieties represented by the following formula (2):

<Formula 1>

In Formula 1,

M ₁₁ is a transition metal,

X ₁₁ to X ₁₄ are independently C or N,

Rings CY ₁₁ to CY ₁₄ are independently a C ₅ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group,

L ₁₁ to L ₁₃ are independently of each other, a single bond, *-C(R _1a )(R _1b )-*', *-C(R _1a )=*', *=C(R _1a )-*', *-C(R _1a )=C(R _1b )-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *- B(R _1a )-*', *-N(R _1a )-*', *-O-*', *-P(R _1a )-*', *-Si(R _1a )(R _1b )- *', *-P(=O)(R _1a )-*', *-S-*', *-S(=O)-*', *-S(=O) ₂ -*' or *- Ge(R _1a )(R _1b )-*', where * and *' are each binding sites with neighboring atoms,

n11 to n13 are independently integers of 1 to 5,

R ₁₁ to R ₁₄ , R _1a and R _1b are independently of each other substituted with hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R _10a or Unsubstituted C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group unsubstituted or substituted with at least one R _10a , C ₂ -C ₆₀ alkynyl group unsubstituted or substituted with at least one R _10a , at least one C ₁ -C ₆₀ alkoxy group substituted or unsubstituted with R _10a , C ₁ -C ₆₀ alkylthio group substituted or unsubstituted with at least one R _10a , C ₃ substituted or unsubstituted with at least one R _10a -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group unsubstituted or substituted with at least one R _10a , C ₆ -C ₆₀ aryloxy group unsubstituted or substituted with at least one R _10a , at least C ₆ -C ₆₀ arylthio group, -C(Q ₁ )(Q ₂ )(Q ₃ ), -Si(Q ₁ )(Q ₂ )(Q ₃ ), -C 6 -C 60 arylthio group, substituted or unsubstituted with one R _10a N(Q ₁ )(Q ₂ ), -B(Q ₁ )(Q ₂ ), -C(=O)(Q ₁ ), -S(=O) ₂ (Q ₁ ) or -P(=O) (Q ₁ )(Q ₂ ),

a11 to a14 are independently integers from 0 to 10,

<Formula 2>

In Formula 2 above,

Ring CY ₂₁ is a C ₅ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group,

X ₂₁ - is C(R _21a )(R _21b ), N(R _21a ), O or S,

X ₂₂ is C(R _22a ) or N,

Y ₂₁ is C or N, Y ₂₂ is C or N,

R ₂₁ , R ₂₂ , R _21a , R _21b and R _22a are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R _10a C ₁ -C ₆₀ alkyl group substituted or unsubstituted with at least one R _10a , C ₂ -C ₆₀ alkenyl group substituted or unsubstituted with at least one R 10a , C ₂ -C ₆₀ alkynyl group substituted or unsubstituted with at least one R _10a , C ₁ -C ₆₀ alkoxy group substituted or unsubstituted with at least one R _10a , C ₁ -C ₆₀ alkylthio group substituted or unsubstituted with at least one R _10a , substituted or unsubstituted with at least one R _10a C ₃ -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group substituted or unsubstituted with at least one R _10a , C ₆ -C ₆₀ aryloc substituted or unsubstituted with at least one R _10a group, C ₆ -C ₆₀ arylthio group substituted or unsubstituted with at least one R _10a , -C(Q ₁ )(Q ₂ )(Q ₃ ), -Si(Q ₁ )(Q ₂ )(Q ₃ ), -N(Q ₁ )(Q ₂ ), -B(Q ₁ )(Q ₂ ), -C(=O)(Q ₁ ), -S(=O) ₂ (Q ₁ ), or -P( =O)(Q ₁ )(Q ₂ ),

b21 is one of the integers from 0 to 10,

* is the binding site with the neighboring atom,

The R _10a is,

Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, or nitro group;

Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C ₃ -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryl Oxy group, C ₆ -C ₆₀ Arylthio group, -Si(Q ₁₁ )(Q ₁₂ )(Q ₁₃ ), -N(Q ₁₁ )(Q ₁₂ ), -B(Q ₁₁ )(Q ₁₂ ), - C, unsubstituted or substituted with C(=O)(Q ₁₁ ), -S(=O) ₂ (Q ₁₁ ), -P(=O)(Q ₁₁ )(Q ₁₂ ), or any combination thereof. ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group, or C ₁ -C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, 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 ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, -Si(Q ₂₁ )( Q ₂₂ )(Q ₂₃ ), -N(Q ₂₁ )(Q ₂₂ ), -B(Q ₂₁ )(Q ₂₂ ), -C(=O)(Q ₂₁ ), -S(=O) ₂ (Q ₂₁ ), -P(=O)(Q ₂₁ )(Q ₂₂ ), or any combination thereof, substituted or unsubstituted, C ₃ -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryloxy group, or C ₆ -C ₆₀ arylthio group; or

-Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N(Q ₃₁ )(Q ₃₂ ), -B(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), -S (=O) ₂ (Q ₃₁ ), or -P(=O)(Q ₃₁ )(Q ₃₂ );

ego,

Q ₁ to Q ₃ , Q ₁₁ to Q ₁₃ , Q ₂₁ to Q ₂₃ and Q ₃₁ to Q ₃₃ are independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; Cyano group; nitro group; Substituted or unsubstituted with deuterium, -F, cyano group, phenyl group, biphenyl group, pyridinyl group, pyrimidinyl group, pyridazinyl group, pyrazinyl group, triazinyl group, or any combination thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group, or C ₁ -C ₆₀ alkoxy group; Or deuterium, -F, cyano group, C ₁ -C ₆₀ alkyl group, C ₁ -C ₆₀ alkoxy group, phenyl group, biphenyl group, pyridinyl group, pyrimidinyl group, pyridazinyl group, pyrazinyl group, triazinyl group, or It is a C ₃ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group, substituted or unsubstituted by any combination thereof.

According to another aspect, an electronic device including the above-described light emitting device is provided.

According to another aspect, a consumer product including the above-described light-emitting device is provided.

The light-emitting device can have excellent efficiency characteristics, and can be used to manufacture high-quality electronic devices and consumer products.

Figure 1 is a diagram schematically showing the structure of a light-emitting device according to an embodiment.
FIG. 2 is a diagram schematically showing the structure of an electronic device according to an implementation example.
Figure 3 is a diagram schematically showing the structure of an electronic device according to another implementation example.
Figure 4 is a perspective view schematically showing an electronic device including a light-emitting device according to an embodiment.
Figure 5 is a diagram schematically showing the exterior of a vehicle as an electronic device including a light-emitting device according to an embodiment of the present invention.
6A to 6C are diagrams schematically showing the interior of a vehicle according to various embodiments of the present invention.

The light emitting device includes: a first electrode; a second electrode opposite the first electrode; an intermediate layer disposed between the first electrode and the second electrode and including a light emitting layer; and a capping layer disposed outside the first electrode or outside the second electrode, wherein the light-emitting layer includes a first emitter, and the capping layer may include an amine compound.

1st emitter

The first emitter may emit blue light.

The first emitter may include a transition metal. For example, the first emitter may include platinum (Pt).

According to one implementation, the first emitter may satisfy at least one of the following conditions 1-1 and 1-2:

<Condition 1-1>

HOMO energy level is -4.5 eV or less.

<Condition 1-2>

LUMO energy level is -1.0 eV or less.

For example, the first emitter may satisfy condition 1-1, may satisfy condition 1-2, or may satisfy both conditions 1-1 and 1-2.

The HOMO energy level of the first emitter may be -4.5 eV or less, -4.6 eV or less, -4.7 eV or less, -4.8 eV or less, or -4.9 eV or less.

The LUMO energy level of the first emitter may be -1.0 eV or less, -1.1 eV or less, -1.2 eV or less, -1.3 eV or less, or -1.4 eV or less.

The HOMO and LUMO energy levels can be evaluated through cyclic voltammetry analysis (eg, Evaluation Example 1) for the first emitter.

The first emitter emits first light, and the first light may be blue light.

According to one embodiment, the maximum emission wavelength of the first light may be 470 nm or less.

For example, the maximum emission wavelength of the first light may be 430 nm to 470 nm or 440 nm to 465 nm.

According to one embodiment, the half width of the first light may be 20 nm to 60 nm.

According to one embodiment, the first emitter includes a first ligand, and the first ligand may be a tetradentate ligand bound to platinum.

According to one embodiment, the first ligand includes ring A ₁ , ring A ₂ , ring A ₃ and ring A ₄ directly bonded to platinum,

Ring A ₁ , Ring A ₂ , Ring A ₃ and Ring A ₄ may each independently be a C ₅ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group.

According to one embodiment, the first ligand is a tetradentate ligand,

There may be three cyclometallated rings formed by a chemical bond between the platinum and the first ligand.

According to one embodiment, at least one of Ring A ₁ , Ring A ₂ , Ring A ₃ and Ring A ₄ includes a 5-membered ring, and the 5-membered ring contains at least one nitrogen (N). It can be included.

According to one embodiment, the ring A ₁ includes a 5-membered ring containing at least one nitrogen (N), and the 5-membered ring and the platinum may be bonded to each other.

According to one embodiment, the ring A ₁ is i) a cyclic group of any one of the group CY1, or ii) one or more cyclic groups of the group CY1 and one or more cyclic groups of the group CY2 are condensed with each other, It can be a polycyclic group:

<Group CY1>

Cyclopentane group, cyclopentadiene group, furan group, thiophene group, pyrrole group, silol group, indene group, benzofuran group, benzothiophene group, indole group, benzosilol group, oxazole group, isoxazole group, oxa Diazole group, isoxadiazole group, oxatriazole group, isoxatriazole group, thiazole group, isothiazole group, thiadiazole group, isothiadiazole group, thitriazole group, isothiatriazole group , pyrazole group, imidazole group, triazole group, tetrazole group, azacylol group, diazacylol group or triazacylol group.

<Group CY2>

Adamantane group, norbornane group, norbornene group, cyclohexane group, cyclohexene group, benzene group, pyridine group, pyrimidine group, pyrazine group, pyridazine group or triazine group.

For example, ring A ₁ may be a pyrazole group, an imidazole group, or a benzimidazole group.

According to one embodiment, ring A ₂ may not contain nitrogen.

For example, ring A ₂ may be a benzene group or a naphthalene group.

According to one embodiment, ring A ₃ includes at least one benzene group, and the benzene group and the platinum may be bonded to each other.

According to one embodiment, when ring A ₃ includes nitrogen (N), the nitrogen (N) of ring A ₄ and the carbon (C) of ring A ₄ may be bonded.

For example, ring A ₃ may be a benzene group or a carbazole group.

According to one embodiment, the ring A ₄ includes at least one nitrogen (N), and the nitrogen (N) of the ring A ₄ and the platinum may be bonded to each other.

For example, ring A ₄ may be a pyridine group.

According to one embodiment, ring A ₂ and ring A ₃ are connected to each other through a first linking group, and the first linking group may include at least one oxygen (O).

According to one embodiment, ring A ₁ and ring A ₄ may not be connected to each other.

According to one embodiment, the first ligand may not include a ring bonded to platinum (Pt) other than rings A ₁ to ring A ₄ .

According to one embodiment, ring A ₁ and ring A ₂ of the first ligand are connected to each other by a single bond, ring A ₂ and ring A ₃ are connected through *-O-*', and ring A ₃ and ring A A ₄ may be connected through a single bond or *-O-*'.

amine compounds

The refractive index of the amine compound to light at 633 nm may be 1.6 or more, 1.61 or more, 1.62 or more, or 1.63 or more.

The refractive index of the amine compound to light of 530 nm may be 1.7 or more, 1.72 or more, 1.74 or more, or 1.76 or more.

The refractive index of the amine compound to light at 450 nm may be 1.85 or more, 1.9 or more, 1.95 or more, 1.96 or more, 1.97 or more, 1.98 or more, or 1.99 or more.

The amine compound may satisfy at least one of the following conditions 2-1 and 2-2.

<Condition 2-1>

HOMO energy level is -5.36 eV or less

<Condition 2-2>

LUMO energy level is -1.5 eV or less.

According to one embodiment, the amine compound may satisfy condition 2-1, may satisfy condition 2-2, or may satisfy both conditions 2-1 and 2-2.

The HOMO energy level of the amine compound may be -5.36 eV or less, -5.37 eV or less, -5.38 eV or less, -5.39 eV or less, or -5.4 eV or less.

The LUMO energy level of the amine compound may be -1.5 eV or less, -1.6 eV or less, -1.7 eV or less, -1.8 eV or less, -1.9 eV or less, or -2.0 eV or less.

The amine compound may include a benzoxazole group, a benzthiazole group, a naphthooxazole group, a naphthothiazole group, or any combination thereof.

According to one embodiment, the amine compound may include a benzene group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, or a triazine group.

According to another aspect, a first electrode; a second electrode opposite the first electrode; an intermediate layer disposed between the first electrode and the second electrode and including a light emitting layer; and a capping layer disposed on the outside of the first electrode or on the outside of the second electrode.

The light-emitting layer includes an organometallic compound represented by the following formula (1),

The first capping layer and the second capping layer include an amine compound,

The amine compound includes three or more moieties represented by the following formula (2), and a light emitting device is provided.

organometallic compounds

Hereinafter, the organometallic compound represented by Formula 1 will be described.

<Formula 1>

In Formula 1, M ₁₁ is a transition metal.

According to one embodiment, the M ₁₁ is platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), ruthenium (Ru), osmium (Os), It may be titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), or thulium (Tm).

For example, M ₁₁ may be platinum (Pt), palladium (Pd), or gold (Au).

In Formula 1, X ₁₁ to X ₁₄ are each independently C or N.

For example, X ₁₁ may be N, X ₁₂ may be C, X ₁₃ may be C, and X ₁₄ may be N.

In Formula 1, rings CY ₁₁ to CY ₁₄ are independently a C ₅ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group.

According to one embodiment, the rings CY ₁₁ to CY ₁₄ are independently of each other: i) a cyclic group of any one of the following group CY1, ii) a cyclic group of any one of the following group CY2, iii) a group CY1 of the following: a polycyclic group in which two or more cyclic groups are condensed with each other, iv) a polycyclic group in which two or more cyclic groups in group CY2 are condensed with each other, or v) one or more cyclic groups in group CY1 and one in group CY2. The above cyclic groups may be condensed together to form a polycyclic group:

<Group CY1>

Cyclopentane group, cyclopentadiene group, furan group, thiophene group, pyrrole group, silol group, indene group, benzofuran group, benzothiophene group, indole group, benzosilol group, oxazole group, isoxazole group, oxa Diazole group, isoxadiazole group, oxatriazole group, isoxatriazole group, thiazole group, isothiazole group, thiadiazole group, isothiadiazole group, thitriazole group, isothiatriazole group , pyrazole group, imidazole group, triazole group, tetrazole group, azacylol group, diazacylol group or triazacylol group.

<Group CY2>

Adamantane group, norbornane group, norbornene group, cyclohexane group, cyclohexene group, benzene group, pyridine group, pyrimidine group, pyrazine group, pyridazine group or triazine group.

According to one embodiment, the rings CY ₁₁ to CY ₁₄ are each independently selected from a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, a triphenylene group, a pyrene group, a chrysene group, a cyclopentadiene group, 1,2,3,4-tetrahydronaphthalene group, thiophene group, furan group, indole group, benzoborole group, benzophosphopol group, indene group, benzosilol group, Benzogermole group, benzothiophene group, benzoselenophene group, benzofuran group, carbazole group, dibenzoborole group, dibenzophosphole group, fluorene group, dibenzosilol group, dibenzogermole group, dibenzothi ophene group, dibenzoselenophene group, dibenzofuran group, dibenzothiophene 5-oxide group, 9H-fluoren-9-one group, dibenzothiophene 5,5-dioxide group, azaindole group, azabenzo Borol group, azabenzophosphole group, azaindene group, azabenzosilol group, azabenzogermol group, azabenzothiophene group, azabenzoselenophene group, azabenzofuran group, azacarbazole group, azadibenzoborole group, azadibenzophosphole group, azafluorene group, azadibenzosilol group, azadibenzogermole group, azadibenzothiophene group, azadibenzoselenophene group, azadibenzofuran group, azadibenzothi ophene 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, pyrrole 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, benzothiadiazole group, 5,6,7,8 -It may be a tetrahydroisoquinoline (5,6,7,8-tetrahydroisoquinoline) group or a 5,6,7,8-tetrahydroquinoline (5,6,7,8-tetrahydroquinoline) group.

According to one embodiment, the ring CY ₁₁ is an indole group, an azaindole group, a pyrrole group, a pyrazole group, an imidazole group, a triazole group, an oxazole group, an isoxazole group, a thiazole group, an isothiazole group. , it may be an oxadiazole group, a thiadiazole group, a benzopyraro group, a benzoimidazole group, a benzoxazole group, a benzoxadiazole group, or a benzothiadiazole group.

According to one embodiment, the ring CY- ₁₂ is a benzene group or a naphthalene group,

According to one embodiment, the ring CY ₁₃ may be a benzene group, a naphthalene group, an indole group, a carbazole group, or an azacarbazole group.

According to one embodiment, the ring CY ₁₄ may be a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, or a phenanthroline group. there is.

According to one embodiment, in Formula 1, The portion indicated may be a group represented by any one of the following formulas CY11-1 to CY11-3:

Among the formulas CY11-1 to CY11-3,

Z ₁₁ to Z ₁₈ are independently of each other and are the same as the description for R ₁₁ in the specification,

* and *' are bonding sites with neighboring atoms, respectively.

According to one embodiment, in Formula 1, The portion indicated may be a group represented by any one of the following formulas CY12-1 to CY12-20:

Among the formulas CY12-1 to CY12-20,

Z ₂₁ to Z ₂₃ are independently of each other the same as the description for R ₁₂ in the specification, but are not hydrogen,

*, *' and *'' are each binding sites with neighboring atoms.

According to one embodiment, in Formula 1, The portion indicated may be a group represented by any one of the following formulas CY13-1 to CY13-8:

Among the formulas CY13-1 to CY13-8,

The descriptions of X ₁₃ and R ₁₃ are each the same as described herein,

b12 is an integer from 1 to 3,

b13 is an integer from 1 to 6,

b14 is an integer from 1 to 5,

*, *' and *'' are each binding sites with neighboring atoms.

According to one embodiment, in Formula 1, The portion indicated may be a group represented by any one of the following formulas CY14-1 to CY14-22:

Among the formulas CY14-1 to CY14-22,

Z ₄₁ to Z ₄₇ are independently of each other, the same as the description for R ₁₄ in the specification, but are not hydrogen,

* and *' are bonding sites with neighboring atoms, respectively.

In Formula 1, L ₁₁ to L ₁₃ are each independently a single bond, *-C(R _1a )(R _1b )-*', *-C(R _1a )=*', *=C(R _1a )-*', *-C(R _1a )=C(R _1b )-*', *-C(=O)-*', *-C(=S)-*', *-C≡C- *', *-B(R _1a )-*', *-N(R _1a )-*', *-O-*', *-P(R _1a )-*', *-Si(R _1a ) (R _1b )-*', *-P(=O)(R _1a )-*', *-S-*', *-S(=O)-*', *-S(=O) ₂ - *' or *-Ge(R _1a )(R _1b )-*', where * and *' are each bonding sites with neighboring atoms.

For example, L ₁₁ may be a single bond.

For example, L ₁₂ may be *-O-*' or *-S-*'.

For example, L ₁₃ may be a single bond or *-O-*'.

In Formula 1, n11 to n13 are independently integers of 1 to 5.

In Formula 1, R ₁₁ to R ₁₄ , R _1a and R _1b are independently of each other,

Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C ₁ -C ₆₀ alkyl group substituted or unsubstituted with at least one R _10a , with at least one R _10a Substituted or unsubstituted C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group substituted or unsubstituted with at least one R _10a , C ₁ -C ₆₀ alkoxy group substituted or unsubstituted with at least one R _10a , C ₁ -C ₆₀ alkylthio group substituted or unsubstituted with at least one R _10a , C ₃ -C ₆₀ carbocyclic group substituted or unsubstituted with at least one R _10a , substituted with at least one R _10a , or Unsubstituted C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryloxy group unsubstituted or substituted with at least one R _10a , C ₆ -C ₆₀ aryl substituted or unsubstituted with at least one R _10a Thiogi, -C(Q ₁ )(Q ₂ )(Q ₃ ), -Si(Q ₁ )(Q ₂ )(Q ₃ ), -N(Q ₁ )(Q ₂ ), -B(Q ₁ ) (Q ₂ ), -C(=O)(Q ₁ ), -S(=O) ₂ (Q ₁ ) or -P(=O)(Q ₁ )(Q ₂ ).

According to one embodiment, R ₁₁ to R ₁₄ , R _1a and R _1b are independently selected from CFH ₂ , hydroxyl group, cyano group, nitro group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, cyclo Pentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norbornenyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group , biphenyl group, C ₁ -C ₁₀ alkylphenyl 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, Indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, carbazolyl group, phenanthrolinyl group, benzoimidazolyl group, benzoyl group Furanyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzooxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group , benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, -Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N(Q ₃₁ )(Q ₃₂ ), -B(Q ₃₁ )(Q ₃₂ ), -P(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), -S(=O) ₂ (Q ₃₁ ) and -P(=O ) (Q ₃₁ ) (Q ₃₂ ) Substituted or unsubstituted with at least one of cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantanyl, norbornanyl, norborne Nyl group (norbornenyl), cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, C ₁ -C ₁₀ alkylphenyl 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, pyridi Nyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindolyl 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, isobenzothiazolyl group, benzoxazolyl group, isobenzooxazolyl group, triazolyl group, tetrazolyl group , oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, azacarbazolyl group, azadi Benzofuranyl group, azadibenzothiophenyl group, azafluorenyl group, or azadibenzosilolyl group; or

-Si(Q ₁ )(Q ₂ )(Q ₃ ), -N(Q ₁ )(Q ₂ ), -B(Q ₁ )(Q ₂ ), -C(=O)(Q ₁ ), -S (=O) ₂ (Q ₁ ) or -P(=O)(Q ₁ )(Q ₂ ); ego,

Q ₁ to Q ₃ and Q ₃₁ to Q ₃₃ 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 ;

Substituted or unsubstituted with at least one of deuterium, C ₁ -C ₁₀ alkyl group, phenyl group, biphenyl group, pyridinyl group, pyrimidinyl group, pyridazinyl group, pyrazinyl group and triazinyl group, n-propyl group, isopropyl group group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, naphthyl group, pyridinyl group, pyridine It may be a midinyl group, pyridazinyl group, pyrazinyl group, or triazinyl group.

According to one embodiment, R ₁₁ to R ₁₄ , R _1a and R _1b are independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group, or C ₁ -C ₆₀ alkoxy group;

A group represented by any one of Formulas 9-1 to 9-61, 9-201 to 9-237, 10-1 to 10-129, and 10-201 to 10-350; or

-N(Q ₁ )(Q ₂ ),

The description of Q ₁ and Q ₂ above is the same as described herein:

In the above formulas 9-1 to 9-61, 9-201 to 9-237, 10-1 to 10-129 and 10-201 to 10-350, * is a binding site with an adjacent atom, Ph is a phenyl group, TMS is a trimethylsilyl group, and TMG is a trimethylgermyl group.

In Formula 1, a11 to a14 are independently integers from 0 to 10.

According to one embodiment, the organometallic compound may be any one of the following compounds D1 to D9:

According to one embodiment, the organometallic compound may emit blue light.

According to one embodiment, the organometallic compound emits first light, and the maximum emission wavelength of the first light may be 470 nm or less and 465 nm or less.

According to one embodiment, the HOMO energy level of the organometallic compound may be -4.5 eV or less, -4.6 eV or less, -4.7 eV or less, -4.8 eV or less, or -4.9 eV or less.

According to one embodiment, the LUMO energy level of the organometallic compound may be -1.0 eV or less, -1.1 eV or less, -1.2 eV or less, -1.3 eV or less, or -1.4 eV or less.

amine compounds

Hereinafter, the amine compound and Chemical Formula 2 will be described.

The amine compound includes three or more moieties represented by Formula 2.

According to one embodiment, the amine compound may include three moieties represented by Formula 2.

According to one embodiment, the plurality of moieties represented by Formula 2 included in the amine compound may be the same or different from each other.

<Formula 2>

In Formula 2, ring CY ₂₁ is independently a C ₅ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group.

According to one embodiment, the ring CY ₂₁ may be a benzene group, a naphthalene group, a phenanthrene group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, or a triazine group.

In Formula 2, X ₂₁ - is C(R _21a )(R _21b ), N(R _21a ), O or S, and X ₂₂ is C(R _22a ) or N. For example, X ₂₁ may be O or S, and X ₂₂ may be N.

In Formula 2, Y ₂₁ is C or N, and Y ₂₂ is C or N. For example, Y ₂₁ and Y ₂₂ may each be C.

According to one embodiment, the moiety represented by Formula 2 may be represented by any one of the following Formulas 2-1 to 2-5:

In formulas 2-1 to 2-5,

Y ₂₃ is C(E ₂₃ ) or N, Y ₂₄ is C(E ₂₄ ) or N, Y ₂₅ is C(E ₂₅ ) or N, Y ₂₆ is C(E ₂₆ ) or N,

Y ₃₁ is C(E ₃₁ ) or N, Y ₃₂ is C(E ₃₂ ) or N, Y ₃₃ is C(E ₃₃ ) or N, Y ₃₄ is C(E ₃₄ ) or N, Y ₃₅ is C(E ₃₅ ) or N, Y ₃₆ is C(E ₃₆ ) or N, Y ₃₇ is C(E ₃₇ ) or N, Y ₃₈ is C(E ₃₈ ) or N,

Y ₄₁ is C(E ₄₁ ) or N, Y ₄₂ is C(E ₄₂ ) or N, Y ₄₃ is C(E ₄₃ ) or N, Y ₄₄ is C(E ₄₄ ) or N,

E ₂₃ to E ₂₆ , E ₃₁ to E ₃₈ and E ₄₁ to E ₄₄ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one C ₁ -C ₆₀ alkyl group substituted or unsubstituted with R _10a , C ₂ -C ₆₀ alkenyl group substituted or unsubstituted with at least one R _10a , C ₂ -C ₆₀ unsubstituted or substituted with at least one R _10a Alkynyl group, C ₁ -C ₆₀ alkoxy group substituted or unsubstituted with at least one R _10a , C ₁ -C ₆₀ alkylthio group substituted or unsubstituted with at least one R _10a , substituted with at least one R _10a or Unsubstituted C ₃ -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, unsubstituted or substituted with at least one R _10a , C ₆ -C ₆₀ unsubstituted or substituted with at least one R _10a Aryloxy group, C ₆ -C ₆₀ arylthio group, substituted or unsubstituted with at least one R _10a , -C(Q ₁ )(Q ₂ )(Q ₃ ), -Si(Q ₁ )(Q ₂ )( Q ₃ ), -N(Q ₁ )(Q ₂ ), -B(Q ₁ )(Q ₂ ), -C(=O)(Q ₁ ), -S(=O) ₂ (Q ₁ ) or - P(=O)(Q ₁ )(Q ₂ ),

The descriptions of X ₄₁ , X ₄₂ , R _10a and Q ₁ to Q ₃ are each the same as described herein,

* is a bonding site with a neighboring atom.

According to one embodiment, the moiety represented by Formula 2 may be a group represented by any one of the following Formulas 2(1)-1 to 2(1)-5:

In the above formulas 2(1)-1 to 2(1)-5,

_{The descriptions of ​ ​ ​ ​}

* is a binding site with a neighboring atom.

According to one embodiment, the amine compound may be a compound represented by the following formula 3:

<Formula 3>

Of the above formula 3,

L ₃₁ to L ₃₃ are each independently a single bond, a C ₃ -C ₆₀ carbocyclic group substituted or unsubstituted with at least one R _10a , or a C ₁ -C ₆₀ substituted or unsubstituted with at least one R _10a It is a heterocyclic group,

n31 to n33 are independently integers of 1 to 3,

R ₃₁ to R ₃₃ include a moiety represented by Formula 2,

The descriptions of R _10a and the moiety represented by Formula 2 are the same as those described herein.

According to one embodiment, L ₃₁ to L ₃₃ are each independently a single bond, a C ₆ -C ₆₀ aryl group substituted or unsubstituted with at least one R _10a , or a C substituted or unsubstituted with at least one R _10a . ₁ -C ₆₀ It may be a heteroaryl group.

According to one embodiment, L ₃₁ to L ₃₃ are each independently a single bond, substituted or unsubstituted with at least one R _10a , a benzene group, a naphthalene group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group. Or it may be a triazine group.

According to one embodiment, L ₃₁ to L ₃₃ are each independently a single bond; Or it may be a group represented by any of the following formulas L-1 to L-9:

In the formulas L-1 to L-9,

R ₃₀ is the same as the description for R _10a in this specification,

b30 is an integer from 1 to 4,

b31 is an integer from 1 to 3,

* and *' are each binding sites with neighboring atoms.

According to one embodiment, in Formula 3, R ₃₁ to R ₃₃ may each independently be a moiety represented by Formula 2.

In Formula 2, R ₂₁ , R ₂₂ , R _21a , R _21b and R _22a are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C ₁ -C ₆₀ alkyl group substituted or unsubstituted with at least one R _10a , C ₂ -C ₆₀ alkenyl group substituted or unsubstituted with at least one R _10a , C ₂ unsubstituted or substituted with at least one R _10a -C ₆₀ alkynyl group, C ₁ -C ₆₀ alkoxy group unsubstituted or substituted with at least one R _10a , C ₃ -C ₆₀ carbocyclic group unsubstituted or substituted with at least one R _10a , at least one R C ₁ -C ₆₀ heterocyclic group substituted or unsubstituted with _10a , C ₆ -C ₆₀ aryloxy group substituted or unsubstituted with at least one R _10a , C ₆ unsubstituted or substituted with at least one R _10a -C ₆₀ arylthio group, -C(Q ₁ )(Q ₂ )(Q ₃ ), -Si(Q ₁ )(Q ₂ )(Q ₃ ), -N(Q ₁ )(Q ₂ ), -B (Q ₁ )(Q ₂ ), -C(=O)(Q ₁ ), -S(=O) ₂ (Q ₁ ) or -P(=O)(Q ₁ )(Q ₂ ).

According to one embodiment, R ₂₁ , R ₂₂ , R _21a , R _21b and R _22a are independently of each other,

Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C ₁ -C ₂₀ alkyl group or 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 , hydroxyl group, cyano group, nitro group, C ₁ -C ₁₀ Alkyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl, norbornanyl, norbornenyl, cyclopentenyl, cyclohexyl. C ₁ -C ₂₀ alkyl group or C ₁ -C ₂₀ alkoxy group substituted with at least one of cenyl group, cycloheptenyl group, phenyl group, biphenyl group, naphthyl group, pyridinyl group and pyrimidinyl group;

Deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H, -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , hydroxyl group, cyano group, nitro group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norbornenyl group ), cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, C ₁ -C ₁₀ alkylphenyl group, naphthyl group, fluorenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenyl Renyl 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, pyrazolyl group Zinyl group, pyrimidinyl group, pyridazinyl group, isoindoleyl group, indolyl group, indazolyl group, purinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinoli Nyl group, carbazolyl group, phenanthrolinyl group, benzoimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzooxazolyl group, triazolyl group, tetrazolyl group, oxadia Zolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, -Si(Q ₃₁ )(Q ₃₂ ) (Q ₃₃ ), -N(Q ₃₁ )(Q ₃₂ ), -B(Q ₃₁ )(Q ₃₂ ), -P(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), - Cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, substituted or unsubstituted with at least one of S(=O) ₂ (Q ₃₁ ) and -P(=O)(Q ₃₁ )(Q ₃₂ ), Adamantanyl, norbornanyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C ₁ -C ₁₀ alkylphenyl, naphthyl, 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, indolyl group, indazolyl group, purinyl group, quinolinyl group, iso Quinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cinolinyl group, carbazolyl group, phenanthrolinyl group, benzoimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxa Zolyl group, isobenzooxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopy Ridinyl group, imidazopyrimidinyl group, azacarbazolyl group, azadibenzofuranyl group, azadibenzothiophenyl group, azafluorenyl group, or azadibenzosilolyl group; or

-Si(Q ₁ )(Q ₂ )(Q ₃ ), -N(Q ₁ )(Q ₂ ), -B(Q ₁ )(Q ₂ ), -C(=O)(Q ₁ ), -S (=O) ₂ (Q ₁ ) or -P(=O)(Q ₁ )(Q ₂ ); ego,

Q ₁ to Q ₃ and Q ₃₁ to Q ₃₃ 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 ;

Substituted or unsubstituted with at least one of deuterium, C ₁ -C ₁₀ alkyl group, phenyl group, biphenyl group, pyridinyl group, pyrimidinyl group, pyridazinyl group, pyrazinyl group and triazinyl group, n-propyl group, isopropyl group group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, naphthyl group, pyridinyl group, pyridine midinyl group, pyridazinyl group, pyrazinyl group, or triazinyl group; It can be.

According to one embodiment, R ₂₁ , R ₂₂ , R _21a , R _21b and R _22a are independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, -CD ₃ , -CD ₂ H , -CDH ₂ , -CF ₃ , -CF ₂ H, -CFH ₂ , C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group or C ₁ -C ₆₀ alkoxy group; or

It may be a group represented by any one of Formulas 9-1 to 9-61, 9-201 to 9-237, 10-1 to 10-129, 10-201 to 10-350, and 10-401 to 10-420. .

In Formula 2, b21 is one of the integers from 0 to 10.

In Formula 2, * is a bonding site with a neighboring atom.

According to one embodiment, the amine compound may be any one of the following compounds CP01 to CP15:

According to one embodiment, the refractive index of the amine compound for light of 633 nm may be 1.6 or more, 1.61 or more, 1.62 or more, or 1.63 or more.

According to one embodiment, the refractive index of the amine compound for light of 530 nm may be 1.7 or more, 1.72 or more, 1.74 or more, or 1.76 or more.

According to one embodiment, the refractive index of the amine compound to light of 450 nm may be 1.85 or more, 1.9 or more, 1.95 or more, 1.96 or more, 1.97 or more, 1.98 or more, or 1.99 or more.

According to one embodiment, the HOMO energy level of the amine compound may be -5.36 eV or less, -5.37 eV or less, -5.38 eV or less, -5.39 eV or less, or -5.4 eV or less.

According to one embodiment, the LUMO energy level of the amine compound may be -1.5 eV or less, -1.6 eV or less, -1.7 eV or less, -1.8 eV or less, -1.9 eV or less, or -2.0 eV or less.

The light-emitting device includes a light-emitting layer and a capping layer located outside of the first electrode or outside the second electrode, the light-emitting layer includes an organometallic compound represented by Formula 1, and the capping layer includes a moiety represented by Formula 2. Contains three or more amine compounds.

The organometallic compound may have a maximum emission wavelength of PL spectrum of 470 nm or less, and the condensed cyclic compound may have a refractive index of 2.0 or more in light of 450 nm. Therefore, an organic light emitting device employing the organometallic compound and the condensed cyclic compound can have excellent front and side light emission efficiency at the same time.

Methods for synthesizing the organometallic compound represented by Formula 1 and the amine compound containing the moiety represented by Formula 2 can be recognized by those skilled in the art by referring to the Synthesis Examples and/or Examples described later.

According to one embodiment,

The first electrode of the organic light emitting device is an anode,

The second electrode of the organic light emitting device is a cathode,

The intermediate layer further includes a hole transport region disposed between the first electrode and the light-emitting layer and an electron transport region disposed between the light-emitting layer and the second electrode,

The hole transport region includes a hole injection layer, a hole transport layer, a light emission auxiliary layer, an electron blocking layer, or any combination thereof,

The electron transport region may include a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.

According to another embodiment, the organometallic compound may be included between a pair of electrodes of the light emitting device. Therefore, the organometallic compound may be included in the intermediate layer of the light emitting device, for example, the light emitting layer of the intermediate layer.

According to one embodiment, the light-emitting layer further includes a host, and the content of the organometallic compound per 100 parts by weight of the light-emitting layer may be 0.01 parts by weight to 49.99 parts by weight.

According to another embodiment, the light-emitting layer of the light-emitting device includes a dopant and a host, and the dopant may include an organometallic compound. That is, the organometallic compound can serve as a dopant. For example, the light emitting layer may emit red light.

According to one embodiment, the capping layer of the organic light emitting device includes two or more layers, and among the two or more layers, adjacent layers may have different refractive indices at a wavelength of 450 nm. For example, when the capping layer includes two layers, the two layers may have different refractive indices for a wavelength of 450 nm. For example, when the capping layer includes three different layers, adjacent layers among the three layers may have different refractive indices for a wavelength of 450 nm.

According to one embodiment, the organic light emitting device is,

a first capping layer disposed outside the first electrode and including a condensed ring compound represented by Formula 2 or Formula 3;

a second capping layer disposed outside the second electrode and including a condensed ring compound represented by Formula 2 or Formula 3; or

the first capping layer and the second capping layer;

may include.

According to one embodiment, the first capping layer includes a 1-1 capping layer and a 1-2 capping layer, and the 1-1 capping layer and the 1-2 capping layer have a wavelength of 450 nm. The refractive indices may be different from each other.

According to one embodiment, the first capping layer includes a 1-1 capping layer to a 1-3 capping layer, and layers adjacent to each other among the 1-1 capping layer to the 1-3 capping layer have a thickness of 450 nm. The refractive indices for the wavelengths may be different.

According to one embodiment, the second capping layer includes a 2-1 capping layer and a 2-2 capping layer, and the 2-1 capping layer and the 2-2 capping layer have a wavelength of 450 nm. The refractive indices may be different from each other.

According to one embodiment, the first capping layer includes a 2-1 capping layer to a 2-3 capping layer, and the layers adjacent to each other among the 2-1 capping layer to the 2-3 capping layer have a thickness of 450 nm. The refractive indices for the wavelengths may be different.

In this specification, “(the middle layer) includes an organometallic compound” means “(the middle layer) includes one type of organometallic compound belonging to the category of Formula 1 above or two or more different types of organometallic compounds belonging to the category of Formula 1 above. It can be interpreted as “may include compounds.”

For example, the intermediate layer may include only Compound 1 as the organometallic compound. At this time, the compound D1 may be present in the light-emitting layer of the light-emitting device. Alternatively, the intermediate layer may include Compound 1 and Compound 2 as the organometallic compound. At this time, the compound D1 and the compound D2 may be present in the same layer (for example, both the compound D1 and the compound D2 may be present in the light-emitting layer) or in different layers (for example, the compound D1 may be present in the light-emitting layer). and the compound D2 may exist in the electron transport region).

In this specification, “(the capping layer) includes an amine compound” means “(the capping layer) includes one type of amine compound belonging to the category of the above-mentioned amine compound or two different types of amine compound belonging to the category of the above-mentioned amine compound. It can be interpreted as “may include more than one amine compound.”

For example, the capping layer may include a first capping layer disposed outside the first electrode and/or a second capping layer disposed outside the second electrode, and the first capping layer or the second cap The ping layer may include only the compound CP01 as the amine compound. At this time, the compound CP01 may be present in the first capping layer or the second capping layer of the light emitting device. Alternatively, the first capping layer or the second capping layer may include the compound CP01 and the compound CP02 as the compounds. At this time, the compound CP01 and the compound CP02 exist in the same layer (for example, the compound CP01 and the compound CP02 may both exist in the first capping layer or the second capping layer) or exist in different layers (e.g. For example, the compound CP01 may be present in a first capping layer and the compound CP02 may be present in a second capping layer.

In this specification, “intermediate layer” is a term referring to all single and/or multiple layers disposed between the first electrode and the second electrode of the light emitting device.

According to another aspect, an electronic device including an organic light emitting device as described above is provided. The electronic device may further include a thin film transistor. For example, the electronic device further includes a thin film transistor including a source electrode and a drain electrode, and the first electrode of the light emitting device may be electrically connected to the source electrode or the drain electrode. Meanwhile, the electronic device may further include a color filter, a color conversion layer, a touch screen layer, a polarizing layer, or any combination thereof. For a more detailed description of the electronic device, please refer to what is described herein.

According to another aspect, an electronic device including an organic light emitting device as described above is provided.

For example, the electronic devices include flat panel displays, curved displays, computer monitors, medical monitors, televisions, billboards, indoor or outdoor lighting and/or signal lights, head-up displays, fully or partially transparent displays, flexible displays, and rollers. Rollable displays, foldable displays, stretchable displays, laser printers, phones, cell phones, tablets, phablets, personal digital assistants (PDAs), wearable devices, laptop computers, digital cameras, camcorders , a viewfinder, a micro display, a 3D display, a virtual reality or augmented reality display, a vehicle, a video wall containing multiple displays tiled together, a theater or stadium screen, a phototherapy device, or a sign.

[Description of Figure 1]

Figure 1 schematically shows a cross-sectional view of an organic light-emitting device 10 according to an embodiment of the present invention. The organic light emitting device 10 includes a first electrode 110, an intermediate layer 130, and a second electrode 150.

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

[First electrode (110)]

A substrate may be additionally disposed below the first electrode 110 or above the second electrode 150 in FIG. 1 . As the substrate, a glass substrate or a plastic substrate can be used. Alternatively, the substrate may be a flexible substrate, for example, polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate ( It may include a plastic with excellent heat resistance and durability, such as PAR (polyarylate), polyetherimide, or any combination thereof.

The first electrode 110 may be formed, for example, by providing a first electrode material on the upper part of the substrate using a deposition method or sputtering method. When the first electrode 110 is an anode, a high work function material that facilitates hole injection can be used as the first electrode material.

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

The first electrode 110 may have a single-layer structure (consist of a single layer) or a multi-layer structure including a plurality of layers. For example, the first electrode 110 may have a three-layer structure of ITO/Ag/ITO.

[Middle layer (130)]

An intermediate layer 130 is disposed on the first electrode 110. The intermediate layer 130 includes a light emitting layer.

The intermediate layer 130 includes a hole transport region disposed between the first electrode 110 and the light-emitting layer and an electron transport region disposed between the light-emitting layer and the second electrode 150. region) may be further included.

In addition to various organic materials, the intermediate layer 130 may further include metal-containing compounds such as organometallic compounds and inorganic materials such as quantum dots.

Meanwhile, the intermediate layer 130 includes i) two or more emitting units sequentially stacked between the first electrode 110 and the second electrode 150, and ii) between the two emitting units. It may include a charge generation layer disposed in. When the intermediate layer 130 includes the light emitting unit and the charge generation layer as described above, the light emitting device 10 may be a tandem light emitting device.

[Hole transport area in middle layer 130]

The hole transport region may have i) a single-layer structure consisting of a single material, ii) a single-layer structure consisting of a plurality of different materials, or iii) a single-layer structure consisting of a plurality of different materials. It may have a multi-layer structure including a plurality of layers containing different materials.

The hole transport region may include a hole injection layer, a hole transport layer, a light emission auxiliary layer, an electron blocking layer, or any combination thereof.

For example, the hole transport region is a hole injection layer/hole transport layer, a hole injection layer/hole transport layer/light-emitting auxiliary layer, a hole injection layer/light-emitting auxiliary layer, and a hole transport layer/light-emitting layer, which are sequentially stacked from the first electrode 110. It may have a multi-layer structure of an auxiliary layer or a hole injection layer/hole transport layer/electron blocking layer.

The hole transport region may include a compound represented by Formula 201 below, a compound represented by Formula 202 below, or any combination thereof:

<Formula 201>

<Formula 202>

In formulas 201 and 202,

L ₂₀₁ to L ₂₀₄ are each independently a C ₃ -C ₆₀ carbocyclic group unsubstituted or substituted with at least one R _10a , or a C ₁ -C ₆₀ heterocyclic group unsubstituted or substituted with at least one R _10a Click group,

L ₂₀₅ is *-O-*', *-S-*', *-N(Q ₂₀₁ )-*', at least one C ₁ -C ₂₀ alkylene group substituted or unsubstituted with at least one R _10a C ₂ -C ₂₀ alkenylene group substituted or unsubstituted with R _10a , C ₃ -C ₆₀ carbocyclic group substituted or unsubstituted with at least one R _10a , or unsubstituted or substituted with at least one R _10a is a C ₁ -C ₆₀ heterocyclic group,

xa1 to xa4 are independently one of the integers from 0 to 5,

xa5 is one of the integers from 1 to 10,

R ₂₀₁ to R ₂₀₄ and Q ₂₀₁ are each independently a C ₃ -C ₆₀ carbocyclic group substituted or unsubstituted with at least one R _10a , or a C ₁ -C substituted or unsubstituted with at least one R _{10a 60} heterocyclic groups,

R ₂₀₁ and R ₂₀₂ are optionally a single bond, a C ₁ -C ₅ alkylene group substituted or unsubstituted with at least one R _10a , or a C ₂ -C ₅ unsubstituted or substituted with at least one R _10a They may be linked to each other through an alkenylene group to form a C ₈ -C ₆₀ polycyclic group (e.g., carbazole group, etc.) substituted or unsubstituted with at least one R _10a (e.g., the following compound HT16 etc.),

R ₂₀₃ and R ₂₀₄ are optionally a single bond, a C ₁ -C ₅ alkylene group substituted or unsubstituted with at least one R _10a , or a C ₂ -C substituted or unsubstituted with at least one R _{10a 5} may be linked to each other through an alkenylene group to form a C ₈ -C ₆₀ polycyclic group substituted or unsubstituted with at least one R _10a ,

na1 may be one of the integers from 1 to 4.

For example, each of Formulas 201 and 202 may include at least one of the groups represented by the following Formulas CY201 to CY217:

In the above formulas CY201 to CY217, the description of R _10b and R _10c each refers to the description of R _10a in the specification, and rings CY ₂₀₁ to CY ₂₀₄ are each independently a C ₃ -C ₂₀ carbocyclic group. , or a C ₁ -C ₂₀ heterocyclic group, and at least one hydrogen in the formulas CY201 to CY217 may be substituted or unsubstituted with R _10a as described herein.

According to one embodiment, rings CY ₂₀₁ to CY ₂₀₄ in the formula CY201 to CY217 may independently be a benzene group, a naphthalene group, a phenanthrene group, or an anthracene group.

According to another embodiment, each of Formulas 201 and 202 may include at least one of the groups represented by Formulas CY201 to CY203.

According to yet another embodiment, Formula 201 may include at least one of the groups represented by Formulas CY201 to CY203 and at least one of the groups represented by Formulas CY204 to CY217, respectively.

According to another embodiment, in Formula 201, xa1 is 1, R ₂₀₁ is a group represented by one of the formulas CY201 to CY203, xa2 is 0, and R ₂₀₂ may be a group represented by one of the formulas CY204 to CY207. .

According to another embodiment, each of Formulas 201 and 202 may not include the group represented by Formulas CY201 to CY203.

According to yet another embodiment, each of the formulas 201 and 202 does not include the group represented by the formulas CY201 to CY203, and may include at least one of the groups represented by the formulas CY204 to CY217.

As another example, each of Formulas 201 and 202 may not include the group represented by Formulas CY201 to CY217.

For example, the hole transport region is one of the following compounds HT1 to HT46, m-MTDATA, TDATA, 2-TNATA, NPB (NPD), β-NPB, TPD, Spiro-TPD, Spiro-NPB, methylated-NPB , TAPC, HMTPD, TCTA(4,4',4"-tris(N-carbazolyl)triphenylamine (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-styrene) Sulfonate))), Pani/CSA (Polyaniline/Camphor sulfonic acid), PANI/PSS (Polyaniline/Poly(4-styrenesulfonate)), or its Can include any combination:

The thickness of the hole transport region may be about 50Å to about 10000Å, for example, about 100Å to about 4000Å. When the hole transport region includes a hole injection layer, a hole transport layer, or any combination thereof, the thickness of the hole injection layer is about 100 Å to about 9000 Å, for example, about 100 Å to about 1000 Å, and the thickness of the hole transport layer is The thickness may be from about 50 Å to about 2000 Å, for example from about 100 Å to about 1500 Å. When the thickness of the hole transport region, hole injection layer, and hole transport layer satisfies the above-mentioned ranges, satisfactory hole transport characteristics can be obtained without a substantial increase in driving voltage.

The light emitting auxiliary layer is a layer that serves to increase light emission efficiency by compensating for the optical resonance distance according to the wavelength of light emitted from the light emitting layer, and the electron blocking layer prevents electron leakage from the light emitting layer to the hole transport region. It is a layer that plays a role. Materials that can be included in the hole transport region described above can be included in the light emitting auxiliary layer and the electron blocking layer.

[p-dopant]

In addition to the materials described above, the hole transport region may include a charge-generating material to improve conductivity. The charge-generating material may be uniformly or non-uniformly dispersed (eg, in the form of a single layer consisting of the charge-generating material) within the hole transport region.

The charge-generating material may be, for example, a p-dopant.

For example, the LUMO energy level of the p-dopant may be -3.5 eV or less.

According to one embodiment, the p-dopant may include a quinone derivative, a cyano group-containing compound, an element EL1 and an element EL2-containing compound, or any combination thereof.

Examples of the quinone derivative may include TCNQ, F4-TCNQ, etc.

Examples of the cyano group-containing compound may include HAT-CN, a compound represented by the following formula 221, etc.

<Formula 221>

In Formula 221,

R ₂₂₁ to R ₂₂₃ are each independently a C ₃ -C ₆₀ carbocyclic group unsubstituted or substituted with at least one R _10a , or a C ₁ -C ₆₀ heterocyclic group unsubstituted or substituted with at least one R _10a Click group,

At least one of R ₂₂₁ to R ₂₂₃ is independently a cyano group; -F; -Cl; -Br; -I; a C ₁ -C ₂₀ alkyl group substituted with a cyano group, -F, -Cl, -Br, -I, or any combination thereof; It may be a C ₃ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group substituted with or any combination thereof.

Among the element EL1 and element EL2-containing compounds, the element EL1 may be a metal, a metalloid, or a combination thereof, and the element EL2 may be a non-metal, a metalloid, or a combination thereof.

Examples of the metal include alkali metals (eg, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), etc.); Alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), etc.); Transition metals (e.g. titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W) ), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt (Co), rhodium (Rh), iridium (Ir), nickel (Ni) ), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag), gold (Au), etc.); metals after transfer (eg, zinc (Zn), indium (In), tin (Sn), etc.); Lanthanide metals (e.g., lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), and terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), etc.); It may include etc.

Examples of the metalloid may include silicon (Si), antimony (Sb), tellurium (Te), etc.

Examples of the non-metal may include oxygen (O), halogen (eg, F, Cl, Br, I, etc.).

For example, the element EL1 and element EL2-containing compounds include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides, metal iodides, etc.), metalloid halides (e.g. , metalloid fluoride, metalloid chloride, metalloid bromide, metalloid iodide, etc.), metal telluride, or any combination thereof.

Examples of the metal oxide include tungsten oxide (e.g., WO, W ₂ O ₃ , WO ₂ , WO ₃ , W ₂ O ₅ , etc.), vanadium oxide (e.g., VO, V ₂ O ₃ , VO ₂ , V ₂ O ₅ , etc.), molybdenum oxide (MoO, Mo ₂ O ₃ , MoO ₂ , MoO ₃ , Mo ₂ O ₅ , etc.), rhenium oxide (for example, ReO ₃ etc.), etc.

Examples of the metal halide may include alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and lanthanide metal halides.

Examples of the alkali metal halides include LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, CsI, etc. It can be included.

Examples of the alkaline earth metal halides include BeF ₂ , MgF ₂ , CaF ₂ , SrF ₂ , BaF ₂ , BeCl ₂ , MgCl ₂ , CaCl ₂ , SrCl ₂ , BaCl ₂ , BeBr ₂ , MgBr ₂ , CaBr ₂ , SrBr ₂ , BaBr ₂ , BeI ₂ , MgI ₂ , CaI ₂ , SrI ₂ , BaI ₂ , etc.

Examples of the transition metal halides include titanium halides (e.g., TiF ₄ , TiCl ₄ , TiBr ₄ , TiI ₄ , etc.), zirconium halides (e.g., ZrF ₄ , ZrCl ₄ , ZrBr ₄ , ZrI ₄ etc.), hafnium halides (e.g. HfF ₄ , HfCl ₄ , HfBr ₄ , HfI ₄ etc.), vanadium halides (e.g. VF ₃ , VCl ₃ , VBr ₃ , VI ₃ etc.), niobium halides (e.g., NbF ₃ , NbCl ₃ , NbBr ₃ , NbI ₃ , etc.), tantalum halides (e.g., TaF ₃ , TaCl ₃ , TaBr ₃ , TaI ₃ , etc.), chromium halides (e.g., CrF ₃ , CrCl ₃ , CrBr ₃ , CrI ₃ , etc.), molybdenum halides (e.g., MoF ₃ , MoCl ₃ , MoBr ₃ , MoI ₃ , etc.), tungsten halides (e.g., WF ₃ , WCl ₃ , WBr) ₃ , WI ₃ , etc.), manganese halides (e.g., MnF ₂ , MnCl ₂ , MnBr ₂ , MnI ₂ , etc.), technetium halides (e.g., TcF ₂ , TcCl ₂ , TcBr ₂ , TcI ₂ , etc.) , rhenium halides (e.g., ReF ₂ , ReCl ₂ , ReBr ₂ , ReI ₂ , etc.), iron halides (e.g., FeF ₂ , FeCl ₂ , FeBr ₂ , FeI ₂ , etc.), ruthenium halides (e.g. For example, RuF ₂ , RuCl ₂ , RuBr ₂ , RuI ₂ , etc.), osmium halides (for example, OsF ₂ , OsCl ₂ , OsBr ₂ , OsI ₂ , etc.), cobalt halides (for example, CoF ₂ , CoCl ₂ , CoBr ₂ , CoI ₂ , etc.), rhodium halides (e.g. RhF ₂ , RhCl ₂ , RhBr ₂ , RhI ₂ , etc.), iridium halides (e.g. IrF ₂ , IrCl ₂ , IrBr ₂ , etc.) IrI ₂ , etc.), nickel halides (e.g., NiF ₂ , NiCl ₂ , NiBr ₂ , NiI ₂ , etc.), palladium halides (e.g., PdF ₂ , PdCl ₂ , PdBr ₂ , PdI ₂ , etc.), platinum. Halides (e.g., PtF ₂ , PtCl ₂ , PtBr ₂ , PtI ₂ , etc.), copper halides (e.g., CuF, CuCl, CuBr, CuI, etc.), silver halides (e.g., AgF, AgCl , AgBr, AgI, etc.), gold halides (e.g., AuF, AuCl, AuBr, AuI, etc.).

Examples of metal halides after the transfer include zinc halides (e.g. ZnF ₂ , ZnCl ₂ , ZnBr ₂ , ZnI ₂ etc.), indium halides (e.g. InI ₃ etc.), tin halides (e.g. For example, SnI _2, etc.), etc. may be included.

Examples of the lanthanide metal halide include YbF, YbF ₂ , YbF ₃ , SmF ₃ , YbCl, YbCl ₂ , YbCl ₃ SmCl ₃ , YbBr, YbBr ₂ , YbBr ₃ SmBr ₃ , YbI, YbI ₂ , YbI ₃ , SmI. It may include ₃ , etc.

Examples of the metalloid halide may include antimony halide (eg, SbCl ₅ , etc.).

Examples of the metal telluride include alkali metal telluride (e.g., Li ₂ Te, Na ₂ Te, K ₂ Te, Rb ₂ Te, Cs ₂ Te, etc.), alkaline earth metal telluride (e.g., BeTe, MgTe, CaTe, SrTe, BaTe, etc.), transition metal tellurides (e.g. TiTe ₂ , ZrTe ₂ , HfTe ₂ , V ₂ Te ₃ , Nb ₂ Te ₃ , Ta ₂ Te ₃ , Cr ₂ Te ₃ , Mo ₂ Te ₃ , W ₂ Te ₃ , MnTe, TcTe, ReTe, FeTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu ₂ Te, CuTe, Ag ₂ Te, AgTe, Au ₂ Te, etc.), After transfer metal telluride (e.g. ZnTe, etc.), lanthanide metal telluride (e.g. LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, etc.) may be included.

[Emitting layer in the middle layer (130)]

When the light-emitting device 10 is a full-color light-emitting device, the light-emitting layer may be patterned into a red light-emitting layer, a green light-emitting layer, and/or a blue light-emitting layer for each subpixel. Alternatively, the light-emitting layer may have a structure in which two or more layers of a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer are stacked in contact or spaced apart, or two or more materials of a red light-emitting material, a green light-emitting material, and a blue light-emitting material are mixed without layer distinction. It has a structured structure and can emit white light.

In addition to the first emitter as described above, the light emitting layer may further include a host, an auxiliary dopant, a sensor, a delayed fluorescent material, or any combination thereof. Each of the host, auxiliary dopant, sensor, delayed fluorescent material, or any combination thereof may include at least one deuterium.

For example, the light emitting layer may include the first emitter and the host. The host is different from the first emitter, and the host may include an electron transport compound, a hole transport compound, a bipolar compound, or any combination thereof. The host may not contain metal. Each of the electron-transporting compounds, hole-transporting compounds, and amphiphilic compounds is different from each other.

According to one embodiment, the light emitting layer includes the first emitter and a host, and the host may include an electron transport compound and a hole transport compound. The electron transporting compound and the hole transporting compound may form an exciplex.

For example, the electron transporting compound may include at least one π electron-deficient nitrogen-containing C ₁ -C ₆₀ cyclic group. For example, the electron transporting compound may include a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or any combination thereof.

As another _example , the hole transporting compound includes at least one π electron-rich C ₃ -C ₆₀ cyclic group, _a pyridine group, or a combination thereof, Electron transporting groups (e.g., π electron-deficient nitrogen-containing C ₁ -C ₆₀ cyclic groups excluding pyridine groups, cyano groups, sulfoxide groups, phosphine oxide groups, etc.) may not be included.

According to one embodiment, the following compounds may be excluded from the hole transport compounds.

The content of the dopant in the light-emitting layer may be about 0.01 to about 15 parts by weight based on 100 parts by weight of the host.

Alternatively, the light emitting layer may include quantum dots.

Meanwhile, the light-emitting layer may include a delayed fluorescent material. The delayed fluorescent material may serve as a host or dopant in the light emitting layer.

The thickness of the light emitting layer may be about 100Å to about 1000Å, for example, about 200Å to about 600Å. When the thickness of the light-emitting layer satisfies the range described above, excellent light-emitting characteristics can be exhibited without a substantial increase in driving voltage.

[host]

The host may include a compound represented by the following formula 301:

<Formula 301>

[Ar ₃₀₁ ] _xb11 -[(L ₃₀₁ ) _xb1 -R ₃₀₁ ] _xb21

In the above formula 301,

Ar ₃₀₁ and L ₃₀₁ are each independently a C ₃ -C ₆₀ carbocyclic group unsubstituted or substituted with at least one R _10a , or a C ₁ -C ₆₀ heterocyclic group unsubstituted or substituted with at least one R _10a Click group,

xb11 is 1, 2 or 3,

xb1 is one of the integers from 0 to 5,

R ₃₀₁ is hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one C ₁ -C ₆₀ alkyl group unsubstituted or substituted with at least one R _10a C ₂ -C ₆₀ alkenyl group substituted or unsubstituted with R _10a , C ₂ -C ₆₀ alkynyl group substituted or unsubstituted with at least one R _10a , C ₁ - unsubstituted or substituted with at least one R _10a C ₆₀ alkoxy group, C ₃ -C ₆₀ carbocyclic group unsubstituted or substituted with at least one R _10a , C ₁ -C ₆₀ heterocyclic group unsubstituted or substituted with at least one R _10a , -Si( Q ₃₀₁ )(Q ₃₀₂ )(Q ₃₀₃ ), -N(Q ₃₀₁ )(Q ₃₀₂ ), -B(Q ₃₀₁ )(Q ₃₀₂ ), -C(=O)(Q ₃₀₁ ), -S(=O ) ₂ (Q ₃₀₁ ), or -P(=O)(Q ₃₀₁ )(Q ₃₀₂ ),

xb21 is one of the integers from 1 to 5,

The description of Q ₃₀₁ to Q ₃₀₃ each refers to the description of Q ₁ in this specification.

For example, when xb11 in Formula 301 is 2 or more, 2 or more Ar ₃₀₁ may be connected to each other through a single bond.

As another example, the host may include a compound represented by Formula 301-1 below, a compound represented by Formula 301-2 below, or any combination thereof:

<Formula 301-1>

<Formula 301-2>

In the above formulas 301-1 to 301-2,

Rings A ₃₀₁ to Ring A ₃₀₄ are each independently a C ₃ -C ₆₀ carbocyclic group unsubstituted or substituted with at least one R _10a , or a C ₁ -C ₆₀ group unsubstituted or substituted with at least one R _10a It is a heterocyclic group,

X _{301 is} O _, S _, N- _{[ (} L _{304 )}

xb22 and xb23 are independently of each other, 0, 1, or 2,

For descriptions of L ₃₀₁ , xb1 and R ₃₀₁ , refer to what is each described herein,

For the description of L ₃₀₂ to L ₃₀₄ , refer independently to the description of L ₃₀₁ above,

The description of xb2 to xb4 independently refers to the description of xb1 above,

For descriptions of R ₃₀₂ to R ₃₀₅ and R ₃₁₁ to R ₃₁₄ , respectively, refer to the description of R ₃₀₁ above.

As another example, the host may include an alkaline earth metal complex, a post-transfer metal complex, or any combination thereof. For example, the host may include a Be complex (eg, compound H55 below), an Mg complex, a Zn complex, or any combination thereof.

As another example, the host may be one of the following compounds H1 to H128, ADN (9,10-Di(2-naphthyl)anthracene), MADN (2-Methyl-9,10-bis(naphthalen-2-yl)anthracene ), TBADN (9,10-di-(2-naphthyl)-2-t-butyl-anthracene), CBP (4,4′-bis(N-carbazolyl)-1,1′-biphenyl), mCP (1 ,3-di-9-carbazolylbenzene), TCP (1,3,5-tri(carbazol-9-yl)benzene), or any combination thereof:

[Phosphorescent dopant]

The phosphorescent dopant may include at least one transition metal as a central metal.

The phosphorescent dopant may include a monodenate ligand, a 2-dentate ligand, a 3-dentate ligand, a 4-dentate ligand, a 5-dentate ligand, a 6-dentate ligand, or any combination thereof.

The phosphorescent dopant may be electrically neutral.

For example, the phosphorescent dopant may include an organometallic compound represented by the following Chemical Formula 401:

<Formula 401>

M(L ₄₀₁ ) _xc1 (L ₄₀₂ ) _xc2

<Formula 402>

In formulas 401 and 402,

M is a transition metal (e.g., iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), gold (Au), hafnium (Hf), europium (Eu), and terbium. (Tb), rhodium (Rh), rhenium (Re), or thulium (Tm)),

L ₄₀₁ is a ligand represented by the above formula 402, xc1 is 1, 2 or 3, and when xc1 is 2 or more, 2 or more L ₄₀₁ are the same or different from each other,

L ₄₀₂ is an organic ligand, xc2 is 0, 1, 2, 3, or 4, and when xc2 is 2 or more, 2 or more L ₄₀₂ are the same or different from each other,

X ₄₀₁ and X ₄₀₂ are independently of each other nitrogen or carbon,

Ring A ₄₀₁ and Ring A ₄₀₂ are, independently of each other, a C ₃ -C ₆₀ carbocyclic group, or a C ₁ -C ₆₀ heterocyclic group,

T ₄₀₁ is a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q ₄₁₁ )-*', *-C(Q ₄₁₁ )( Q ₄₁₂ )-*', *-C(Q ₄₁₁ )=C(Q ₄₁₂ )-*', *-C(Q ₄₁₁ )=*' or *=C=*',

_{X 403 and ​ ​ ​} )(Q ₄₁₄ ) or Si(Q ₄₁₃ )(Q ₄₁₄ ),

For the description of Q ₄₁₁ to Q ₄₁₄ , refer to the description of Q ₁ in the specification, respectively,

R ₄₀₁ and R ₄₀₂ are independently of each other hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C ₁ -substituted or unsubstituted with at least one R _10a C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group substituted or unsubstituted with at least one R _10a , C ₃ -C ₆₀ carbocyclic group substituted or unsubstituted with at least one R _10a , with at least one R _10a Substituted or unsubstituted C ₁ -C ₆₀ heterocyclic group, -Si(Q ₄₀₁ )(Q ₄₀₂ )(Q ₄₀₃ ), -N(Q ₄₀₁ )(Q ₄₀₂ ), -B(Q ₄₀₁ )(Q ₄₀₂ ), -C(=O)(Q ₄₀₁ ), -S(=O) ₂ (Q ₄₀₁ ), or -P(=O)(Q ₄₀₁ )(Q ₄₀₂ ),

For the description of Q ₄₀₁ to Q ₄₀₃ , refer to the description of Q ₁ in the specification, respectively,

xc11 and xc12 are independently one of the integers from 0 to 10,

* and *' in Formula 402 are each binding sites with M in Formula 401.

For example, in Formula 402, i) X ₄₀₁ may be nitrogen and X ₄₀₂ may be carbon, or ii) both X ₄₀₁ and X ₄₀₂ may be nitrogen.

As another example, when xc1 in Formula 401 is 2 or more, two rings A ₄₀₁ among 2 or more L ₄₀₁ are optionally connected to each other through a linking group T ₄₀₂ , or two rings A ₄₀₂ are optionally connected to each other, They can be connected to each other through the linking group T ₄₀₃ (see compounds PD1 to PD4 and PD7 below). For descriptions of T ₄₀₂ and T ₄₀₃ , refer to the description of T ₄₀₁ in this specification.

In Formula 401, L ₄₀₂ may be any organic ligand. For example, L ₄₀₂ is a halogen group, a diketone group (for example, an acetylacetonate group), a carboxylic acid group (for example, a picolinate group), -C (=O), an isonitrile group. , -CN group, phosphorus group (e.g., phosphine group, phosphite group, etc.), or any combination thereof.

The phosphorescent dopant may include, for example, one of the following compounds PD1 to PD39, or any combination thereof:

[Fluorescent dopant]

The fluorescent dopant may include an amine group-containing compound, a styryl group-containing compound, or any combination thereof.

For example, the fluorescent dopant may include a compound represented by the following formula 501:

<Formula 501>

In formula 501,

Ar ₅₀₁ , L ₅₀₁ to L ₅₀₃ , R ₅₀₁ and R ₅₀₂ are each independently a C ₃ -C ₆₀ carbocyclic group unsubstituted or substituted with at least one R _10a , or substituted or unsubstituted with at least one R _10a It is a ringed C ₁ -C ₆₀ heterocyclic group,

xd1 to xd3 are independently 0, 1, 2, or 3,

xd4 can be 1, 2, 3, 4, 5, or 6.

For example, Ar ₅₀₁ in Formula 501 may include a condensed ring group in which three or more monocyclic groups are condensed together (eg, an anthracene group, chrysene group, pyrene group, etc.).

As another example, in Formula 501, xd4 may be 2.

For example, the fluorescent dopant may include one of the following compounds FD1 to FD36, DPVBi, DPAVBi, or any combination thereof:

[Delayed fluorescent material]

The light emitting layer may include a delayed fluorescent material.

The delayed fluorescent material herein may be selected from any compound capable of emitting delayed fluorescence by a delayed fluorescence emission mechanism.

The delayed fluorescent material included in the light-emitting layer may function as a host or a dopant, depending on the type of other material included in the light-emitting layer.

According to one embodiment, the difference between the triplet energy level (eV) of the delayed fluorescent material and the singlet energy level (eV) of the delayed fluorescent material may be 0 eV or more and 0.5 eV or less. The difference between the triplet energy level (eV) of the delayed fluorescent material and the singlet energy level (eV) of the delayed fluorescent material satisfies the range described above, thereby changing the delayed fluorescent material from the triplet state to the singlet state. Reverse energy transfer (up-conversion) is effectively achieved, and the luminous efficiency of the light-emitting device 10 can be improved.

For example, the delayed fluorescent material _may include: i) at least one electron donor (e.g., _a π electron-rich C ₃ -C ₆₀ cyclic group such as a carbazole group) group), etc.) and at least one electron acceptor (e.g., sulfoxide group, cyano group, π electron-deficient nitrogen-containing C ₁ -C ₆₀ cyclic group (π electron-deficient nitrogen-containing C ₁ - ii) materials containing a C ₈ -C _{60 polycyclic} group containing two or more cyclic groups condensed while sharing boron (B);

Examples of the delayed fluorescent material may include at least one of the following compounds DF1 to DF14:

[Electron transport area in middle layer 130]

The electron transport region is i) a single layer structure consisting of a single material, ii) a single layer structure consisting of a plurality of different materials, or iii) a plurality of structures. It may have a multi-layer structure including a plurality of layers containing different materials.

The electron transport region may include a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

For example, the electron transport region may be an electron transport layer/electron injection layer, a hole blocking layer/electron transport layer/electron injection layer, an electron control layer/electron transport layer/electron injection layer, or a buffer layer/electron transport layer/ It may have a structure such as an electron injection layer.

The electron transport region (e.g., a buffer layer, a hole blocking layer, an electron control layer, or an electron transport layer among the electron transport regions) contains at least one π electron-deficient nitrogen-containing C ₁ -C ₆₀ cyclic group (π electron It may include metal-free compounds including -deficient nitrogen-containing C ₁ -C ₆₀ cyclic group).

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

<Formula 601>

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

In the above formula 601,

Ar ₆₀₁ , and L ₆₀₁ are each independently a C ₃ -C ₆₀ carbocyclic group unsubstituted or substituted with at least one R _10a , or a C ₁ -C ₆₀ heterocyclic group unsubstituted or substituted with at least one R _10a It is a cyclic group,

xe11 is 1, 2, or 3,

xe1 is 0, 1, 2, 3, 4, or 5,

R ₆₀₁ is a C ₃ -C ₆₀ carbocyclic group unsubstituted or substituted with at least one R _10a , a C ₁ -C ₆₀ heterocyclic group unsubstituted or substituted with at least one R _10a , -Si(Q ₆₀₁ )(Q ₆₀₂ )(Q ₆₀₃ ), -C(=O)(Q ₆₀₁ ), -S(=O) ₂ (Q ₆₀₁ ), or -P(=O)(Q ₆₀₁ )(Q ₆₀₂ ) ,

For the description of Q ₆₀₁ to Q ₆₀₃ , respectively, refer to the description of Q ₁ in this specification,

xe21 is 1, 2, 3, 4, or 5,

At least one of Ar ₆₀₁ , L ₆₀₁ and R ₆₀₁ may independently be a π electron-deficient nitrogen-containing C ₁ -C ₆₀ cyclic group substituted or unsubstituted with at least one R _10a .

For example, when xe11 in Formula 601 is 2 or more, 2 or more Ar ₆₀₁ may be connected to each other through a single bond.

As another example, Ar ₆₀₁ in Formula 601 may be a substituted or unsubstituted anthracene group.

As another example, the electron transport region may include a compound represented by the following formula 601-1:

<Formula 601-1>

In the above 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}

For descriptions of L ₆₁₁ to L _613, refer to the description of L ₆₀₁ above, respectively.

For descriptions of xe611 to xe613, refer to the description of xe1 above, respectively.

For descriptions of R ₆₁₁ to R _613, refer to the description of R ₆₀₁ above, respectively.

R ₆₁₄ to R ₆₁₆ are independently of each other hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C ₁ -C ₂₀ alkyl group, C ₁ -C ₂₀ alkoxy group , a C ₃ -C ₆₀ carbocyclic group substituted or unsubstituted with at least one R _10a , or a C ₁ -C ₆₀ heterocyclic group substituted or unsubstituted with at least one R _10a .

For example, in Formulas 601 and 601-1, xe1 and xe611 to xe613 may be independently 0, 1, or 2.

The electron transport region is one of the following compounds ET1 to ET46 , BCP (2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline) , Bphen (4,7-Diphenyl-1,10-phenanthroline) , Alq ₃ , BAlq, TAZ, NTAZ, or any combination thereof:

The thickness of the electron transport region may be about 100Å to about 5000Å, for example, about 160Å to about 4000Å. When the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, or any combination thereof, the thickness of the buffer layer, the hole blocking layer, or the electron control layer is independently from each other, about 20 Å to about 1000 Å, For example, it may be about 30Å to about 300Å, and the thickness of the electron transport layer may be about 100Å to about 1000Å, for example, about 150Å to about 500Å. When the thickness of the buffer layer, hole blocking layer, electron control layer, electron transport layer, and/or electron transport region satisfies the above-described range, satisfactory electron transport characteristics can be obtained without a substantial increase in driving voltage.

The electron transport region (eg, an electron transport layer in 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 alkaline metal complex may be a Li ion, Na ion, K ion, Rb ion, or Cs ion, and the metal ion of the alkaline earth metal complex may be a Be ion, Mg ion, Ca ion, Sr ion, or Ba ion. You can. 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, and hydroxyphenyl. Oxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzoimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclo Pentadiene, or any combination thereof.

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

The electron transport region may include an electron injection layer that facilitates electron injection from the second electrode 150. The electron injection layer may directly contact the second electrode 150.

The electron injection layer has i) a single layer structure consisting of a single material (consist of), ii) a single layer structure (consist of) a single layer containing a plurality of different materials, or iii) a plurality of layers. It may have a multilayer structure having a plurality of layers containing different materials.

The electron injection layer is an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof. It can be included.

The alkali metal may include Li, Na, K, Rb, Cs, or any combination thereof. 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-containing compound, the alkaline earth metal-containing compound, and the rare earth metal-containing compound are oxides, halides (e.g., fluoride, chloride, bromide, iodide, etc.), telluride, or any combination thereof.

The alkali metal-containing compound may be an alkali metal oxide such as Li ₂ O, Cs ₂ O, K ₂ O, an alkali metal halide such as LiF, NaF, CsF, KF, LiI, NaI, CsI, KI, or any of the above. It may include a combination of . The alkaline earth metal-containing compounds include BaO, SrO, CaO, Ba _x Sr _1-x O (x is a real number satisfying 0<x<1), Ba _x Ca _1-x O (x is 0<x< It may include alkaline earth metal compounds such as (a real number that satisfies 1). The rare earth metal-containing compound is YbF ₃ , ScF ₃ , Sc ₂ O ₃ , Y ₂ O ₃ , Ce ₂ O ₃ , GdF ₃ , TbF ₃ , YbI ₃ , ScI ₃ , TbI ₃ , or any combination thereof. It can be included. Alternatively, the rare earth metal-containing compound may include the lanthanide metal telluride. Examples of the lanthanide metal telluride include LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La ₂ Te ₃ , Ce ₂ Te ₃ , Pr ₂ Te ₃ , Nd ₂ Te ₃ , Pm ₂ Te ₃ , Sm ₂ Te ₃ , Eu ₂ Te ₃ , Gd ₂ Te ₃ , Tb ₂ Te ₃ , Dy ₂ Te ₃ , Ho ₂ Te ₃ , Er ₂ Te ₃ , It may include Tm ₂ Te ₃ , Yb ₂ Te ₃ , Lu ₂ Te ₃ , etc.

The alkali metal complex, alkaline earth metal complex and rare earth metal complex include i) one of the ions of the alkali metal, alkaline earth metal and rare earth metal as described above and ii) a ligand bound to the metal ion, for example, hydroxyquinoline. , hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxide It may include hydroxyphenylpyridine, hydroxyphenylbenzoimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof.

The electron injection layer is an alkali metal, alkaline earth metal, rare earth metal, alkali metal-containing compound, alkaline earth metal-containing compound, rare earth metal-containing compound, alkali metal complex, alkaline earth metal complex, rare earth metal complex, or thereof as described above. It may consist of any combination, or may further include an organic substance (for example, a compound represented by Chemical Formula 601).

According to one embodiment, the electron injection layer i) consists of an alkali metal-containing compound (e.g. an alkali metal halide), or ii) a) an alkali metal-containing compound (e.g. an alkali metal halide). alkali metal halides); and b) alkali metal, alkaline earth metal, rare earth metal, or any combination thereof. For example, the electron injection layer may be a KI:Yb co-deposited layer, a RbI:Yb co-deposited layer, a LiF:Yb co-deposited layer, or the like.

When the electron injection layer further includes an organic material, the alkali metal, alkaline earth metal, rare earth metal, alkali metal-containing compound, alkaline earth metal-containing compound, rare earth metal-containing compound, alkali metal complex, alkaline earth metal complex, rare earth metal The complex, or any combination thereof, may be uniformly or non-uniformly dispersed in the matrix containing the organic material.

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

[Second electrode (150)]

The second electrode 150 is disposed on the middle layer 130 as described above. The second electrode 150 may be a cathode, which is an electron injection electrode. In this case, the material for the second electrode 150 is a metal, alloy, electrically conductive compound, or any of the materials having a low work function. A combination of can be used.

The second electrode 150 includes lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), and magnesium-indium (Mg-In). ), magnesium-silver (Mg-Ag), ytterbium (Yb), silver-ytterbium (Ag-Yb), ITO, IZO, or any combination thereof. The second electrode 150 may be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

The second electrode 150 may have a single-layer structure or a multi-layer structure having a plurality of layers.

[Capping layer]

A first capping layer may be disposed outside the first electrode 110, and/or a second capping layer may be disposed outside the second electrode 150. Specifically, the organic light emitting device 10 has a structure in which a first capping layer, a first electrode 110, an intermediate layer 130, and a second electrode 150 are sequentially stacked, the first electrode 110, the intermediate layer 130 ), a structure in which the second electrode 150 and the second capping layer are sequentially stacked, or the first capping layer, the first electrode 110, the middle layer 130, the second electrode 150, and the second capping layer are sequentially stacked. It can have a structured structure.

The light generated in the light-emitting layer of the middle layer 130 of the organic light-emitting device 10 may pass through the first electrode 110, which is a transflective electrode or a transmissive electrode, and the first capping layer, and be extracted to the outside, and the organic light-emitting device 10 The light generated in the light-emitting layer of the middle layer 130 may be taken out to the outside through the second electrode 150, which is a semi-transmissive electrode or a transmissive electrode, and the second capping layer.

The first capping layer and the second capping layer may serve to improve external light emission efficiency based on the principle of constructive interference. Accordingly, the light extraction efficiency of the organic light-emitting device 10 may be increased, and the luminous efficiency of the organic light-emitting device 10 may be improved.

Each of the first capping layer and the second capping layer may include a material having a refractive index (at 589 nm) of 1.6 or more.

Each of the first capping layer and the second capping layer may include a material having a refractive index of 1.9 or more (at 450 nm).

The first capping layer and the second capping layer may independently be an organic capping layer including an organic material, an inorganic capping layer including an inorganic material, or an organic-inorganic composite capping layer including an organic material and an inorganic material.

At least one of the first capping layer and the second capping layer is, independently of each other, a carbocyclic compound, a heterocyclic compound, an amine group-containing compound, porphine derivatives, phthalocyanine derivatives, It may include naphthalocyanine derivatives, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compounds, heterocyclic compounds and amine group-containing compounds may optionally be substituted with substituents including O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. You can. According to one embodiment, at least one of the first capping layer and the second capping layer may independently include an amine group-containing compound.

For example, at least one of the first capping layer and the second capping layer may independently include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof.

According to another embodiment, at least one of the first capping layer and the second capping layer is, independently of each other, one of the compounds HT28 to HT33, one of the following compounds CP1 to CP6, β-NPB, or any compound thereof. May include:

[film]

The organometallic compound represented by Formula 1 and/or the amine compound containing three or more moieties represented by Formula 2 may be included in various films. Therefore, according to another aspect, a film containing an organometallic compound represented by Formula 1 and/or an amine compound containing three or more moieties represented by Formula 2 may be provided. The film may be, for example, an optical member (or light control means) (e.g., a color filter, a color conversion member, a capping layer, a light extraction efficiency improvement layer, a selective light absorption layer, a polarizing layer, a quantum dot-containing layer, etc.) , a light blocking member (for example, a light reflection layer, a light absorption layer, etc.), a protective member (for example, an insulating layer, a dielectric layer, etc.), etc.

[Electronic Device]

The organic light emitting device may be included in various electronic devices. For example, an electronic device including the organic light emitting device may be a light emitting device, an authentication device, or the like.

The electronic device (eg, light-emitting device) may further include, in addition to the organic light-emitting element, i) a color filter, ii) a color conversion layer, or iii) a color filter and a color conversion layer. The color filter and/or color conversion layer may be disposed in at least one direction of travel of light emitted from the light emitting device. For example, the light emitted from the light emitting device may be blue light or white light. For a description of the light emitting device, refer to the above description. According to one embodiment, the color conversion layer may include quantum dots. The quantum dot may be, for example, a quantum dot as described herein.

The electronic device may include a first substrate. The first substrate includes a plurality of subpixel areas, the color filter includes a plurality of color filter areas corresponding to each of the plurality of subpixel areas, and the color conversion layer is located in each of the plurality of subpixel areas. It may include a plurality of corresponding color conversion areas.

A pixel defining layer is disposed between the plurality of subpixel areas to define each subpixel area.

The color filter may further include a plurality of color filter regions and a light-shielding pattern disposed between the plurality of color filter regions, and the color conversion layer may include a plurality of color conversion regions and a light-shielding pattern disposed between the plurality of color conversion regions. It may further include.

The plurality of color filter areas (or the plurality of color conversion areas) include: a first area emitting first color light; a second region emitting second color light; and/or a third region emitting third color light, wherein the first color light, the second color light, and/or the third color light may have different maximum emission wavelengths. For example, the first color light may be red light, the second color light may be green light, and the third color light may be blue light. For example, the plurality of color filter regions (or plurality of color conversion regions) may include quantum dots. Specifically, the first region may include red quantum dots, the second region may include green quantum dots, and the third region may not include quantum dots. For a description of quantum dots, refer to what is described herein. The first area, the second area, and/or the third area may each further include a scatterer.

For example, the organic light emitting device emits first light, the first region absorbs the first light and emits 1-1 color light, and the second region absorbs the first light. , emitting 2-1 color light, and the third region may absorb the first light and emit 3-1 color light. At this time, the 1-1 color light, the 2-1 color light, and the 3-1 color light may have different maximum emission wavelengths. Specifically, the first light may be blue light, the 1-1 color light may be red light, the 2-1 color light may be green light, and the 3-1 color light may be blue light.

The electronic device may further include a thin film transistor in addition to the organic light emitting device described above. The thin film transistor may include a source electrode, a drain electrode, and an active layer, and one of the source electrode and the drain electrode may be electrically connected to one of the first electrode and the second electrode of the light emitting device.

The thin film transistor may further include a gate electrode, a gate insulating film, etc.

The active layer may include crystalline silicon, amorphous silicon, organic semiconductor, oxide semiconductor, etc.

The electronic device may further include a sealing portion that seals the organic light emitting device. The sealing part may be disposed between the color filter and/or color conversion layer and the light emitting device. The sealing part allows light from the organic light emitting device to be extracted to the outside, while simultaneously blocking external air and moisture from penetrating into the light emitting device. The sealing unit may be a sealing substrate including a transparent glass substrate or a plastic substrate. The sealing portion may be a thin film encapsulating layer including one or more organic layers and/or inorganic layers. When the sealing part is a thin film encapsulation layer, the electronic device can be flexible.

In addition to the color filter and/or color conversion layer, various functional layers may be additionally disposed on the sealing portion depending on the purpose of the electronic device. The functional layer may include a touch screen layer, a polarizing layer, etc. The touch screen layer may be a resistive touch screen layer, a capacitive touch screen layer, or an infrared touch screen layer.

The authentication device may further include a biometric information collection means in addition to the organic light emitting device described above. For example, the authentication device may be a biometric authentication device that authenticates an individual using biometric information (eg, fingertips, eyes, etc.).

The electronic devices include various displays, light sources, lighting, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notebooks, electronic dictionaries, electronic game machines, and medical devices (e.g., electronic thermometers, blood pressure monitors). , blood sugar meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram display devices, ultrasonic diagnostic devices, endoscope display devices), fish finders, various measuring devices, instruments (e.g., instruments for vehicles, aircraft, and ships), projectors, etc. It can be applied.

[Explanation of Figures 2 and 3]

Figure 2 is a cross-sectional view of a light-emitting device according to an embodiment of the present invention.

The light emitting device of FIG. 2 includes a substrate 100, a thin film transistor (TFT), a light emitting element, and an encapsulation unit 300 that seals the light emitting element.

The substrate 100 may be a flexible substrate, a glass substrate, or a metal substrate. A buffer layer 210 may be disposed on the substrate 100. The buffer layer 210 prevents impurities from penetrating through the substrate 100 and may serve to provide a flat surface on the upper part of the substrate 100.

A thin film transistor (TFT) may be disposed on the buffer layer 210. The thin film transistor (TFT) may include an active layer 220, a gate electrode 240, a source electrode 260, and a drain electrode 270.

The active layer 220 may include an inorganic semiconductor such as silicon or polysilicon, an organic semiconductor, or an oxide semiconductor, and includes a source region, a drain region, and a channel region.

A gate insulating film 230 may be disposed on top of the active layer 220 to insulate the active layer 220 and the gate electrode 240, and a gate electrode 240 may be disposed on the gate insulating film 230. .

An interlayer insulating film 250 may be disposed on the gate electrode 240. The interlayer insulating film 250 is disposed between the gate electrode 240 and the source electrode 260 and between the gate electrode 240 and the drain electrode 270 to insulate them.

A source electrode 260 and a drain electrode 270 may be disposed on the interlayer insulating film 250. The interlayer insulating film 250 and the gate insulating film 230 may be formed to expose the source and drain regions of the active layer 220, and the source electrode 260 may be in contact with the exposed source and drain regions of the active layer 220. ) and a drain electrode 270 may be disposed.

Such a thin film transistor (TFT) can be electrically connected to a light-emitting device to drive the light-emitting device, and is covered and protected by the passivation layer 280. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, or a combination thereof. A light emitting device is provided on the passivation layer 280. The light emitting device includes a first electrode 110, an intermediate layer 130, and a second electrode 150.

The first electrode 110 may be disposed on the passivation layer 280. The passivation layer 280 may be disposed to expose a predetermined area without covering the entire drain electrode 270, and the first electrode 110 may be disposed to be connected to the exposed drain electrode 270.

A pixel defining layer 290 including an insulating material may be disposed on the first electrode 110. The pixel defining film 290 exposes a predetermined area of the first electrode 110, and an intermediate layer 130 may be formed in the exposed area. The pixel defining layer 290 may be a polyimide or polyacrylic organic layer. Although not shown in FIG. 2 , some or more of the middle layer 130 may extend to the upper part of the pixel defining layer 290 and be disposed in the form of a common layer.

A second electrode 150 may be disposed on the intermediate layer 130, and a capping layer 170 may be additionally formed on the second electrode 150. The capping layer 170 may be formed to cover the second electrode 150.

An encapsulation portion 300 may be disposed on the capping layer 170. The encapsulation portion 300 may be disposed on the light emitting device to protect the light emitting device from moisture or oxygen. The encapsulation portion 300 is an inorganic film including silicon nitride (SiNx), silicon oxide (SiOx), indium tin oxide, indium zinc oxide, or any combination thereof, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, Polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acrylic resin (e.g., polymethyl methacrylate, polyacrylic acid, etc.), epoxy resin (e.g., AGE (aliphatic glycidyl ether), etc.) ) or an organic layer including any combination thereof, or a combination of an inorganic layer and an organic layer.

Figure 3 is a cross-sectional view of a light emitting device according to another embodiment of the present invention.

The light-emitting device of FIG. 3 is the same as the light-emitting device of FIG. 2, except that a light-shielding pattern 500 and a functional area 400 are additionally disposed on the encapsulation portion 300. The functional area 400 may be i) a color filter area, ii) a color conversion area, or iii) a combination of a color filter area and a color conversion area. According to one embodiment, the light-emitting device included in the light-emitting device of FIG. 3 may be a tandem light-emitting device.

[Explanation of Figure 4]

FIG. 4 is a perspective view schematically showing an electronic device 1 including a light-emitting device according to an embodiment of the present invention. The electronic device 1 is a device that displays moving images or still images, such as a mobile phone, a smart phone, a tablet personal computer, a mobile communication terminal, an electronic notebook, an e-book, or a PMP. It may be a variety of products or a part of them, such as a portable multimedia player (portable multimedia player) or a navigation device, a portable electronic device (Ultra Mobile PC (UMPC)), a television, a laptop, a monitor, a billboard, or the Internet of Things (IOT). Additionally, the electronic device 1 may be or be part of a wearable device such as a smart watch, a watch phone, a glasses-type display, or a head mounted display (HMD). Of course, the present invention is not limited to this. For example, the electronic device 1 includes a dashboard of a car, a center information display (CID) placed on the center fascia or dashboard of a car, and a room mirror display that replaces the side mirror of a car. display, entertainment for the rear seats of a car or a display placed on the back of the front seat, a head-up display (HUD) installed in the front of the car or projected on the front window glass, and a holographic augmented reality head-up display (computer) It may be Generated Hologram Augmented Reality Head Up Display, CGH AR HUD). Figure 4 shows a case where the electronic device 1 is a smart phone for convenience of explanation.

The electronic device 1 may include a display area (DA) and a non-display area (NDA) outside the display area (DA). A display device can implement an image through an array of a plurality of pixels arranged two-dimensionally in the display area DA.

The non-display area (NDA) is an area that does not display images and may entirely surround the display area (DA). Drivers for providing electrical signals or power to display elements arranged in the display area (DA) may be placed in the non-display area (NDA). A pad, which is an area where electronic devices or printed circuit boards can be electrically connected, may be placed in the non-display area (NDA).

The electronic device 1 may have different lengths in the x-axis direction and lengths in the y-axis direction. For example, as shown in FIG. 4, the length in the x-axis direction may be shorter than the length in the y-axis direction. For another example, the length in the x-axis direction and the length in the y-axis direction may be the same. For another example, the length in the x-axis direction may be longer than the length in the y-axis direction.

[Description of Figures 5 and 6a to 6c]

FIG. 5 is a diagram schematically showing the exterior of a vehicle 1000 as an electronic device including a light-emitting device according to an embodiment of the present invention. 6A to 6C are diagrams schematically showing the interior of a vehicle 1000 according to various implementation examples of the present invention.

Referring to FIGS. 5, 6A, 6B, and 6C, the vehicle 1000 may refer to various devices that move a vehicle such as a human, object, or animal from a source to a destination. The vehicle 1000 may include a vehicle traveling on a road or track, a ship moving on the sea or a river, and an airplane flying in the sky using the action of air.

The vehicle 1000 can travel on a road or track. The vehicle 1000 may move in a predetermined direction according to the rotation of at least one wheel. For example, the vehicle 1000 may include a three- or four-wheeled vehicle, construction equipment, a two-wheeled vehicle, a motor vehicle, a bicycle, and a train running on a track.

The vehicle 1000 may include a body having an interior and an exterior, and a chassis on which mechanical devices necessary for driving are installed in the remaining parts excluding the body. The exterior of the car body may include fillers provided at the boundaries between the front panel, bonnet, roof panel, rear panel, trunk, and doors. The chassis of the vehicle 1000 may include a power generation device, a power transmission device, a running device, a steering device, a braking device, a suspension device, a transmission device, a fuel device, front, rear, left and right wheels, etc.

The vehicle 1000 includes a side window glass 1100, a front window glass 1200, a side mirror 1300, a cluster 1400, a center fascia 1500, a passenger dashboard 1600, and a display device 2. It can be included.

The side window glass 1100 and the front window glass 1200 may be partitioned by a filler disposed between the side window glass 1100 and the front window glass 1200.

The side window glass 1100 may be installed on the side of the vehicle 1000. In one embodiment, the side window glass 1100 may be installed on the door of the vehicle 1000. There may be a plurality of side window glasses 1100 and they may face each other. In one embodiment, the side window glass 1100 may include a first side window glass 1110 and a second side window glass 1120. In one embodiment, the first side window glass 1110 may be disposed adjacent to the cluster 1400. The second side window glass 1120 may be placed adjacent to the passenger seat dashboard 1600.

In one embodiment, the side window glasses 1100 may be spaced apart from each other in the x-direction or -x-direction. For example, the first side window glass 1110 and the second side window glass 1120 may be spaced apart from each other in the x direction or -x direction. In other words, the virtual straight line L connecting the side window glasses 1100 may extend in the x direction or -x direction. For example, a virtual straight line L connecting the first side window glass 1110 and the second side window glass 1120 may extend in the x direction or -x direction.

The front window glass 1200 may be installed in the front of the vehicle 1000. The front window glass 1200 may be disposed between the side window glasses 1100 facing each other.

The side mirror 1300 may provide a view of the rear of the vehicle 1000. The side mirror 1300 may be installed on the exterior of the vehicle body. In one implementation, a plurality of side mirrors 1300 may be provided. One of the plurality of side mirrors 1300 may be disposed outside the first side window glass 1110. Another one of the plurality of side mirrors 1300 may be disposed outside the second side window glass 1120.

Cluster 1400 may be located in front of the steering wheel. The cluster 1400 includes a tachometer, a speedometer, a coolant temperature gauge, a fuel gauge turn indicator light, a high beam indicator light, a warning light, a seat belt warning light, an odometer, an odometer, an automatic shift selection lever indicator light, a door open warning light, an engine oil warning light, and /Or a low fuel warning light may be placed.

The center fascia 1500 may include a control panel with a plurality of buttons for controlling an audio device, an air conditioning device, and a seat heater. The center fascia 1500 may be placed on one side of the cluster 1400.

The passenger seat dashboard 1600 may be spaced apart from the cluster 1400 with the center fascia 1500 interposed therebetween. In one embodiment, the cluster 1400 may be arranged to correspond to the driver's seat (not shown), and the passenger seat dashboard 1600 may be placed to correspond to the passenger seat (not shown). In one implementation, the cluster 1400 may be adjacent to the first side window glass 1110, and the passenger seat dashboard 1600 may be adjacent to the second side window glass 1120.

In one embodiment, the display device 2 may include a display panel 3, and the display panel 3 may display an image. The display device 2 may be placed inside the vehicle 1000. In one embodiment, the display device 2 may be disposed between side window glasses 1100 facing each other. The display device 2 may be disposed on at least one of the cluster 1400, the center fascia 1500, and the passenger seat dashboard 1600.

The display device 2 may include an organic light emitting display, an inorganic light emitting display, a quantum dot display, etc. Hereinafter, the present invention will be described. As the display device 2 according to one embodiment, an organic light emitting display device including a light emitting element according to the present invention will be described as an example. However, various types of display devices as described above may be used in embodiments of the present invention.

Referring to FIG. 6A , the display device 2 may be placed on the center fascia 1500. In one implementation, the display device 2 can display navigation information. In one implementation, the display device 2 can display audio, video, or information about vehicle settings.

Referring to FIG. 6B, the display device 2 may be disposed in a cluster 1400. In this case, the cluster 1400 can display driving information, etc. through the display device 2. That is, the cluster 1400 can be implemented digitally. The digital cluster 1400 can display vehicle information and driving information as images. For example, tachometer needles and gauges and various warning light icons can be displayed by digital signals.

Referring to FIG. 6C, the display device 2 may be placed on the passenger seat dashboard 1600. The display device 2 may be embedded in the passenger seat dashboard 1600 or may be located on the passenger seat dashboard 1600. In one implementation, the display device 2 disposed on the passenger seat dashboard 1600 may display information displayed on the cluster 1400 and/or an image related to information displayed on the center fascia 1500. In another implementation, the display device 2 disposed on the passenger dashboard 1600 may display information different from the information displayed on the cluster 1400 and/or the information displayed on the center fascia 1500.

[Manufacturing method]

Each layer included in the hole transport region, the light-emitting layer, and each layer included in the electron transport region are, respectively, vacuum deposition method, spin coating method, cast method, LB method (Langmuir-Blodgett), inkjet printing method, laser printing method, and laser method. It can be formed in a predetermined area using various methods such as thermal transfer (Laser Induced Thermal Imaging, LITI).

When forming each layer included in the hole transport region, the light emitting layer, and each layer included in the electron transport region by vacuum deposition, the deposition conditions are, for example, a deposition temperature of about 100 to about 500° C., about 10 A vacuum degree of ^-8 to about 10 ^-3 torr and a deposition rate of about 0.01 to about 100 Å/sec may be selected in consideration of the materials to be included in the layer to be formed and the structure of the layer to be formed.

[Definition of Terms]

As used herein, a C ₃ -C ₆₀ carbocyclic group refers to a cyclic group with 3 to 60 carbon atoms consisting only of carbon as a ring-forming atom, and a C ₁ -C ₆₀ heterocyclic group refers to a cyclic group containing, in addition to carbon, ring-forming atoms. It refers to a cyclic group with 1 to 60 carbon atoms that further contains a hetero atom as an atom. Each of the C ₃ -C ₆₀ carbocyclic group and C ₁ -C ₆₀ heterocyclic group may be a monocyclic group consisting of one ring or a polycyclic group in which two or more rings are condensed with each other. For example, the number of ring-forming atoms of the C ₁ -C ₆₀ heterocyclic group may be 3 to 61.

As used herein, cyclic groups include both the C ₃ -C ₆₀ carbocyclic group and the C ₁ -C ₆₀ heterocyclic group.

As used herein _, the π electron-rich C ₃ -C ₆₀ cyclic group is a ring-forming moiety and is a cyclic group having 3 to ₆₀ carbon atoms excluding *-N=*'. refers to a group, _and the π electron-deficient nitrogen-containing C ₁ -C ₆₀ cyclic group is a ring-forming moiety containing *-N=*' _. It refers to a heterocyclic group having 1 to 60 carbon atoms.

for example,

The C ₃ -C ₆₀ carbocyclic group is i) group T1 or ii) a condensed ring group in which two or more groups T1 are condensed with each other (e.g., cyclopentadiene group, adamantane group, norbornane group, Benzene group, pentalene group, naphthalene group, azulene group, indacene group, acenaphthylene group, phenalene group, phenanthrene group, anthracene group, fluoranthene group, triphenylene group, pyrene group, chrysene group, perylene group, pentaphene group, hepthalene group, naphthacene group, picene group, hexacene group, pentacene group, rubicene group, coronene group, ovalene group, indene group, fluorene group, spiro -bifluorene group, benzofluorene group, indenophenanthrene group, or indenoanthracene group),

The C ₁ -C ₆₀ heterocyclic group is i) a group T2, ii) a condensed ring group in which two or more groups T2 are condensed with each other, or iii) a condensed ring group in which one or more groups T2 and one or more groups T1 are condensed with each other (e.g. For example, pyrrole group, thiophene group, furan group, indole group, benzoindole group, naphthoindole group, isoindole group, benzoisoindole group, naphthoisoindole group, benzosilol group, benzothiophene group, benzoyl group. Furan group, carbazole group, dibenzosilol group, dibenzothiophene group, dibenzofuran group, indenocarbazole group, indolocarbazole group, benzofurocarbazole group, benzothienocarbazole group, benzo Silolocarbazole group, benzoindolocarbazole group, benzocarbazole group, benzonaphthofuran group, benzonaphthothiophene group, benzonaphthosilol group, benzofurodibenzofuran group, benzofurodibenzothiophene group , benzothienodibenzothiophene group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiadiazole group, benzopyra Sol group, benzimidazole group, benzoxazole group, benzoisoxazole group, benzothiazole group, benzoisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, Isoquinoline group, benzoquinoline group, benzoisoquinoline group, quinoxaline group, benzoquinoxaline group, quinazoline group, benzoquinazoline group, phenanthroline group, cinoline group, phthalazine group, naphthyridine group, Dazopyridine group, imidazopyrimidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, azacarbazole group, azafluorene group, azadibenzosilol group, azadibenzothiophene group , azadibenzofuran group, etc.),

The π electron-excess C ₃ -C ₆₀ cyclic group is i) group T1, ii) a condensed ring group in which two or more groups T1 are condensed with each other, iii) group T3, iv) a condensed ring in which two or more groups T3 are condensed with each other. group or v) a condensed ring group in which one or more groups T3 and one or more groups T1 are condensed with each other (e.g., the C ₃ -C ₆₀ carbocyclic group, 1H-pyrrole group, silole group, borole group, 2H-pyrrole group, 3H-pyrrole group, thiophene group, furan group, indole group, benzoindole group, naphthoindole group, isoindole group, benzoisoindole group, naphthoisoindole group, benzosilol group, benzoti ophene group, benzofuran group, carbazole group, dibenzosilol group, dibenzothiophene group, dibenzofuran group, indenocarbazole group, indolocarbazole group, benzofurocarbazole group, benzothienocarba Sol group, benzosilolocarbazole group, benzoindolocarbazole group, benzocarbazole group, benzonaphthofuran group, benzonaphthothiophene group, benzonaphthosilol group, benzofurodibenzofuran group, benzofurodi benzothiophene group, benzothienodibenzothiophene group, etc.),

The π electron-deficient nitrogen-containing C ₁ -C ₆₀ cyclic group is i) group T4, ii) a condensed ring group in which two or more groups T4 are condensed with each other, iii) one or more groups T4 and one or more groups T1 are condensed with each other. a condensed ring group, iv) a condensed ring group in which one or more groups T4 and one or more groups T3 are condensed with each other, or v) a condensed ring group in which one or more groups T4, one or more groups T1 and one or more groups T3 are condensed with each other (e.g. For example, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiadiazole group, benzopyrazole group, benzimidazole group. , benzooxazole group, benzoisoxazole group, benzothiazole group, benzoisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, benzoquinoline group. , benzoisoquinoline group, quinoxaline group, benzoquinoxaline group, quinazoline group, benzoquinazoline group, phenanthroline group, cinoline group, phthalazine group, naphthyridine group, imidazopyridine group, imidazopyridine group. Limidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, azacarbazole group, azafluorene group, azadibenzosilol group, azadibenzothiophene group, azadibenzofuran group, etc. ) can be,

The group T1 is a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, a cyclooctane group, a cyclobutene group, a cyclopentene group, a cyclopentadiene group, a cyclohexene group, and a cyclohexadiene group. , cycloheptene group, adamantane group, norbornane (or, bicyclo[2.2.1]heptane) group, norbornene group, bicyclo[1.1.1]pentane group, bicyclo[2.1.1]hexane group, bicyclo[2.2.2]octane group, or benzene It's a group,

The group T2 is a furan group, thiophene group, 1H-pyrrole group, silole group, borole group, 2H-pyrrole group, 3H-pyrrole group, imidazole group, pyrazole group, triazole group, tetrazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiadiazole group, azacylol group, azabolol group, pyridine group, pyrimidine group, pyrazine group, Pyridazine group, triazine group, tetrazine group, pyrrolidine group, imidazolidine group, dihydropyrrole group, piperidine group, tetrahydropyridine group, dihydropyridine group, hexahydropyrimidine group, tetra A hydropyrimidine group, a dihydropyrimidine group, a piperazine group, a tetrahydropyrazine group, a dihydropyrazine group, a tetrahydropyridazine group, or a dihydropyridazine group,

The group T3 is a furan group, a thiophene group, a 1H-pyrrole group, a silole group, or a borole group,

The group T4 is 2H-pyrrole group, 3H-pyrrole group, imidazole group, pyrazole group, triazole group, tetrazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group. , isothiazole group, thiadiazole group, azacylol group, azaborole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group or tetrazine group.

As used herein, a cyclic group, a C ₃ -C ₆₀ carbocyclic group, a C ₁ -C ₆₀ heterocyclic group, a π electron-excessive C ₃ -C ₆₀ cyclic group, or a π electron-deficient nitrogen-containing C ₁ - The term C ₆₀ cyclic group refers to a group condensed to any cyclic group, a monovalent group, or a multivalent group (e.g., a divalent group, a trivalent group, 4 group, etc.). For example, the “benzene group” may be a benzo group, a phenyl group, a phenylene group, etc., which can be easily understood by those skilled in the art, depending on the structure of the chemical formula containing the “benzene group”.

For example, examples of monovalent C ₃ -C ₆₀ carbocyclic groups and monovalent C ₁ -C ₆₀ heterocyclic groups include 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 ₁ -C ₆₀ heteroaryl group, monovalent non-aromatic condensed polycyclic group, and monovalent non-aromatic hetero It may include a condensed polycyclic group, and examples of the divalent C ₃ -C ₆₀ carbocyclic group and monovalent C ₁ -C ₆₀ heterocyclic group include C ₃ -C ₁₀ cycloalkylene group, C ₁ -C ₁₀ Heterocycloalkylene group, C ₃ -C ₁₀ cycloalkenylene group, C ₁ -C ₁₀ heterocycloalkenylene group, C ₆ -C ₆₀ arylene group, C ₁ -C ₆₀ heteroarylene group, divalent non-aromatic condensed polycyclic groups, and divalent non-aromatic heterocondensed polycyclic groups.

As used herein, C ₁ -C ₆₀ alkyl group refers to a linear or branched aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, and specific examples thereof 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 -iso Pentyl 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, sec -decyl group, tert -decyl group, etc. . As used herein, the C ₁ -C ₆₀ alkylene group refers to a divalent group having the same structure as the C ₁ -C ₆₀ alkyl group.

As used herein, the C ₂ -C ₆₀ alkenyl group refers to a monovalent hydrocarbon group containing one or more carbon-carbon double bonds in the middle or end of the C ₂ -C ₆₀ alkyl group, and specific examples thereof include ethenyl group and propenyl group. , butenyl group, etc. As used herein, the C ₂ -C ₆₀ alkenylene group refers to a divalent group having the same structure as the C ₂ -C ₆₀ alkenyl group.

As used herein, the C ₂ -C ₆₀ alkynyl group refers to a monovalent hydrocarbon group containing one or more carbon-carbon triple bonds in the middle or end of the C ₂ -C ₆₀ alkyl group, and specific examples thereof include ethynyl group and propynyl group. etc. are included. As used herein, the C ₂ -C ₆₀ alkynylene group refers to a divalent group having the same structure as the C ₂ -C ₆₀ alkynyl group.

As used herein, C ₁ -C ₆₀ alkoxy group refers to a monovalent group having the formula -OA ₁₀₁ (where A ₁₀₁ is the C ₁ -C ₆₀ alkyl group), and specific examples thereof include methoxy group and ethoxy group. , isopropyloxy group, etc.

As used herein, C ₃ -C ₁₀ cycloalkyl group refers to a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and specific examples thereof include cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, and cyclohepyl group. Tyl group, cyclooctyl group, adamantanyl, norbornanyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]phen These include bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, and bicyclo[2.2.2]octyl. As used herein, the C ₃ -C ₁₀ cycloalkylene group refers to a divalent group having the same structure as the C ₃ -C ₁₀ cycloalkyl group.

As used herein, a C ₁ -C ₁₀ heterocycloalkyl group refers to a monovalent cyclic group having 1 to 10 carbon atoms that further contains at least one hetero atom as a ring-forming atom in addition to a carbon atom, and specific examples thereof include 1, Includes 2,3,4-oxatriazolidinyl group (1,2,3,4-oxatriazolidinyl), tetrahydrofuranyl group, tetrahydrothiophenyl group, etc. As used herein, the C ₁ -C ₁₀ heterocycloalkylene group refers to a divalent group having the same structure as the C ₁ -C ₁₀ heterocycloalkyl group.

As used herein, C ₃ -C ₁₀ cycloalkenyl group refers to 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 cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, etc. As used herein, the C ₃ -C ₁₀ cycloalkenylene group refers to a divalent group having the same structure as the C ₃ -C ₁₀ cycloalkenyl group.

As used herein, a C ₁ -C ₁₀ heterocycloalkenyl group is a monovalent cyclic group having 1 to 10 carbon atoms, which further contains at least one hetero atom as a ring-forming atom in addition to a carbon atom, and has at least one double bond in the ring. have Specific examples of the C ₁ -C ₁₀ heterocycloalkenyl group include 4,5-dihydro-1,2,3,4-oxatriazolyl group, 2,3-dihydrofuranyl group, 2,3-dihydro Thiophenyl group, etc. are included. As used herein, the C ₁ -C ₁₀ heterocycloalkenylene group refers to a divalent group having the same structure as the C ₁ -C ₁₀ heterocycloalkenyl group.

As used herein, the C ₆ -C ₆₀ aryl group refers to a monovalent group having a carbocyclic aromatic system having 6 to 60 carbon atoms, and the C ₆ -C ₆₀ arylene group refers to a carbocyclic aromatic system having 6 to 60 carbon atoms. It means a divalent group with . Specific examples of the C ₆ -C ₆₀ aryl group include phenyl group, pentalenyl group, naphthyl group, azulenyl group, indacenyl group, acenaphthyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, and fluoranthenyl group. , triphenylenyl group, pyrenyl group, chrysenyl group, perylenyl group, pentaphenyl group, Includes hepthalenyl group, naphthacenyl group, picenyl group, hexacenyl group, pentacenyl group, rubisenyl group, coronenyl group, ovalenyl group, etc. 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 condensed with each other.

As used herein, C ₁ -C ₆₀ heteroaryl group refers to a monovalent group that further contains at least one hetero atom as a ring-forming atom in addition to a carbon atom and has a heterocyclic aromatic system having 1 to 60 carbon atoms, and C ₁ -C ₆₀ heteroarylene group refers to a divalent group that, in addition to carbon atoms, further contains at least one hetero atom as a ring-forming atom and has a heterocyclic aromatic system of 1 to 60 carbon atoms. Specific examples of the C ₁ -C ₆₀ heteroaryl group include pyridinyl group, pyrimidinyl group, pyrazinyl group, pyridazinyl group, triazinyl group, quinolinyl group, benzoquinolinyl group, isoquinolinyl group, and benzoyl group. These include isoquinolinyl group, quinoxalinyl group, benzoquinoxalinyl group, quinazolinyl group, benzoquinazolinyl group, cynolinyl group, phenanthrolinyl group, phthalazinyl group, naphthyridinyl group, etc. 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 condensed with each other.

As used herein, a monovalent non-aromatic condensed polycyclic group has two or more rings condensed with each other, contains only carbon as a ring forming atom, and the entire molecule is non-aromatic. It means a monovalent group having (for example, having 8 to 60 carbon atoms). Specific examples of the monovalent non-aromatic condensed polycyclic group include indenyl group, fluorenyl group, spiro-bifluorenyl group, benzofluorenyl group, indenophenanthrenyl group, indenoanthracenyl group, etc. As used herein, a divalent non-aromatic condensed polycyclic group refers to a divalent group having the same structure as the monovalent non-aromatic condensed polycyclic group.

As used herein, a monovalent non-aromatic condensed heteropolycyclic group has two or more rings condensed with each other, further contains at least one hetero atom in addition to a carbon atom as a ring-forming atom, and the entire molecule is It refers to a monovalent group having non-aromatic properties (e.g., having 1 to 60 carbon atoms). Specific examples of the monovalent non-aromatic condensed heteropolycyclic group include pyrrolyl group, thiophenyl group, furanyl group, indolyl group, benzoindolyl group, naphthoindolyl group, isoindoleyl group, benzoisoindolyl group, naphthoisoindolyl group. , benzosilolyl group, benzothiophenyl group, benzofuranyl group, carbazolyl group, dibenzosilolyl group, dibenzothiophenyl group, dibenzofuranyl group, azacarbazolyl group, azafluorenyl group, azadibenzosilolyl group, azadi Benzothiophenyl group, azadibenzofuranyl group, pyrazolyl group, imidazolyl group, triazolyl group, tetrazolyl group, oxazolyl group, isoxazolyl group, thiazolyl group, isothiazolyl group, oxadiazolyl group, thiazolyl group Diazolyl group, benzopyrazolyl group, benzoimidazolyl group, benzooxazolyl group, benzothiazolyl group, benzoxadiazolyl group, benzothiadiazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, imidazo Triazinyl group, imidazopyrazinyl group, imidazopyridazinyl group, indenocarbazolyl group, indolocarbazolyl group, benzofurocarbazolyl group, benzothienocarbazolyl group, benzosilolocarbazolyl group, Benzoindolocarbazolyl group, benzocarbazolyl group, benzonaphthofuranyl group, benzonaphthothiophenyl group, benzonaphthosilolyl group, benzofurodibenzofuranyl group, benzofurodibenzothiophenyl group, benzothienodibenzothiophenyl group etc. are included. As used herein, a divalent non-aromatic condensed heteropolycyclic group refers to a divalent group having the same structure as the monovalent non-aromatic condensed heteropolycyclic group.

As used herein, 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 (where A 102 is the C 6 -C ₆₀ aryl group). , A ₁₀₃ refers to the C ₆ -C ₆₀ aryl group.

As used herein, C ₇ -C ₆₀ arylalkyl group refers to -A ₁₀₄ A ₁₀₅ (where A ₁₀₄ is a C ₁ -C ₅₄ alkylene group and A ₁₀₅ is a C ₆ -C ₅₉ aryl group), and as used herein, C ₂ -C ₆₀ heteroarylalkyl group refers to -A ₁₀₆ A ₁₀₇ (where A ₁₀₆ is a C ₁ -C ₅₉ alkylene group and A ₁₀₇ is a C ₁ -C ₅₉ heteroaryl group).

In this specification, “R _10a ” means,

Deuterium (-D), -F, -Cl, -Br, -I, hydroxyl group, cyano group, or nitro group;

Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C ₃ -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryl Oxy group, C ₆ -C ₆₀ arylthio group, C ₇ -C ₆₀ arylalkyl group, C ₂ -C ₆₀ heteroarylalkyl group, -Si(Q ₁₁ )(Q ₁₂ )(Q ₁₃ ), -N(Q ₁₁ ) (Q ₁₂ ), -B(Q ₁₁ )(Q ₁₂ ), -C(=O)(Q ₁₁ ), -S(=O) ₂ (Q ₁₁ ), -P(=O)(Q ₁₁ )( Q ₁₂ ), or substituted or unsubstituted with any combination thereof, C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group, or C ₁ -C ₆₀ alkoxy group;

Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, 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 ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₇ -C ₆₀ arylalkyl group , C ₂ -C ₆₀ heteroarylalkyl group, -Si(Q ₂₁ )(Q ₂₂ )(Q ₂₃ ), -N(Q ₂₁ )(Q ₂₂ ), -B(Q ₂₁ )(Q ₂₂ ), -C( =O)(Q ₂₁ ), -S(=O) ₂ (Q ₂₁ ), -P(=O)(Q ₂₁ )(Q ₂₂ ), or any combination thereof, substituted or unsubstituted, C ₃ - C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, C ₇ -C ₆₀ arylalkyl group, or C ₂ -C ₆₀ hetero Arylalkyl group; or

-Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N(Q ₃₁ )(Q ₃₂ ), -B(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), -S (=O) ₂ (Q ₃₁ ), or -P(=O)(Q ₃₁ )(Q ₃₂ );

It can be.

In this specification, Q ₁ to Q ₃ , Q ₁₁ to Q ₁₃ , Q ₂₁ to Q ₂₃ and Q ₃₁ to Q ₃₃ are each independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; Cyano group; nitro group; Substituted or unsubstituted with deuterium, -F, cyano group, phenyl group, biphenyl group, pyridinyl group, pyrimidinyl group, pyridazinyl group, pyrazinyl group, triazinyl group, or any combination thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group, or C ₁ -C ₆₀ alkoxy group; Or deuterium, -F, cyano group, C ₁ -C ₆₀ alkyl group, C ₁ -C ₆₀ alkoxy group, phenyl group, biphenyl group, pyridinyl group, pyrimidinyl group, pyridazinyl group, pyrazinyl group, triazinyl group, or It is a C ₃ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group, substituted or unsubstituted by any combination thereof.

In this specification, a hetero atom means any atom other than a carbon atom. Examples of such heteroatoms include B, O, S, N, P, Si, B, Ge, Se, or any combination thereof.

In this specification, “Ph” means a phenyl group, “Me” means a methyl group, “Et” means an ethyl group, “tert-Bu” or “Bu ^t ” means a tert-butyl group, and “OMe " means a methoxy group.

As used herein, “biphenyl group” means “a phenyl group substituted with a phenyl group.” The “biphenyl group” belongs to the “substituted phenyl group” in which the substituent is a “C ₆ -C ₆₀ aryl group”.

As used herein, “terphenyl group” means “a phenyl group substituted with a biphenyl group.” The “terphenyl group” belongs to the “substituted phenyl group” in which the substituent is a “C ₆ -C ₆₀ aryl group substituted with a C ₆ -C ₆₀ aryl group”.

In this specification, the x-axis, y-axis, and z-axis are not limited to the three axes in a Cartesian coordinate system and can be interpreted in a broad sense including these. For example, the x-axis, y-axis, and z-axis may be orthogonal to each other, but may also refer to different directions that are not orthogonal to each other.

In this specification, *, *' and *'', unless otherwise defined, mean a binding site with a neighboring atom in the corresponding chemical formula or moiety.

Hereinafter, a compound and a light-emitting device according to an embodiment of the present invention will be described in more detail through synthesis examples and examples. In the following synthesis example, in the expression "B was used instead of A," the molar equivalent of A and the molar equivalent of B are the same.

[Example]

Evaluation Example 1. Evaluation of physical properties of compounds

Using the method described in Table 1 below, the HOMO energy level, LUMO energy level, PL (photoluminescence) maximum emission wavelength (λmax), full width at half maximum (FWHM), and refractive index of the compounds were measured, and the results are shown in Tables 2 to 4 below. indicated.

HOMO
energy level
Assessment Methods Cyclic voltammetry (CV) (electrolyte: 0.1 M Bu ₄ NPF ₆ / solvent: DMF (dimethylforamide) / electrode: using a 3-electrode system (working electrode: GC, reference electrode: Ag/AgCl, auxiliary electrode: Pt)) After obtaining the potential (V)-current (A) graph of each compound, calculate the HOMO energy level of each compound from the oxidation onset of the graph. LUMO
energy level
Assessment Methods Cyclic voltammetry (CV) (electrolyte: 0.1 M Bu ₄ NPF ₆ / solvent: DMF (dimethylforamide) / electrode: using a 3-electrode system (working electrode: GC, reference electrode: Ag/AgCl, auxiliary electrode: Pt)) After obtaining the potential (V)-current (A) graph of each compound, calculate the LUMO energy level of each compound from the reduction onset of the graph. PL λmax
measurement method After dissolving each compound in toluene solvent so that the concentration is 0.01mM, this solution is placed in a quartz cell and emitted when light in the visible range (380 ~ 780 nm) is applied using a luminescence measurement device (Horiba Fluoromax). After measuring the spectrum, the emission wavelength corresponding to the maximum intensity is obtained. FWHM measurement method Measure the wavelength range when the maximum intensity is half of the emission spectrum obtained through the PL λmax measurement method. How to measure refractive index A 60 nm thick film was manufactured by depositing the compound on a glass substrate, and each wavelength (633 nm, 530 nm) was measured according to the Cauchy Film Model using an Ellipsometer M-2000 (J. A. Woollam) at 25°C and 50% relative humidity. and a wavelength of 450 nm) to evaluate the refractive index of the compound.

compound HOMO
(eV) LUMO
(eV) PL λ _max
(nm) FWHM
(nm) D1 -5.11 -1.63 463 54 D2 -5.18 -1.43 457 42 D4 -4.95 -1.46 463 22 D5 -4.98 -1.48 463 22 A1 -4.39 -0.92 471 31 A2 -4.35 -0.90 469 29 A3 -5.00 -1.88 460 19

<Compound A1> <Compound A2> <Compound A3>

compound HOMO
(eV) LUMO
(eV) refractive index @633 nm @530nm @450 nm CP01 -5.38 -1.92 1.776 1.858 2.052 CP02 -5.48 -2.06 1.633 1.814 1.995 CP03 -5.46 -2.00 1.735 1.800 1.945 CP04 -5.51 -1.94 1.708 1.758 1.855 CP05 -5.47 -2.11 1.795 1.883 2.099 CP06 -5.49 -1.99 1.792 1.879 2.087 B1 -4.72 -1.12 1.645 1.757 1.839 B2 -4.96 -1.27 1.693 1.844 1.964 B3 -5.39 -1.88 1.620 1.679 1.804 B4 -5.35 -2.00 1.697 1.780 1.980 B5 -5.36 -1.98 1.648 1.715 1.867 B6 -5.20 -1.70 1.647 1.715 1.863 B7 -5.18 -1.80 1.679 1.756 1.935 B8 -5.24 -1.72 1.673 1.747 1.912 B9 -5.23 -1.81 1.684 1.763 1.947

Example 1-1

A glass substrate on which ITO of 15 Ω/cm ² and 1200 Å was deposited as an anode was cut into 50 mm Then, the substrate was exposed to ozone, cleaned, and installed in a vacuum deposition device.

HT3 was vacuum deposited on top of the ITO substrate to form a hole injection layer with a thickness of 600 Å, and then HT41 was vacuum deposited on top of the hole injection layer to form a hole transport layer with a thickness of 300 Å.

On top of the hole transport layer, the first host (H125), the second host (H128), and D4 were simultaneously deposited at a weight ratio of 45:45:10 to form a 350Å thick light emitting layer.

On top of the light emitting layer ET37 was deposited to form a hole blocking layer with a thickness of 50 Å. Next, ET46 and LiQ were simultaneously deposited on top of the hole blocking layer at a weight ratio of 50:50 to form an electron transport layer with a thickness of 310 Å, and then Yb was deposited on top of the electron transport layer to form an electron injection layer with a thickness of 15 Å, and AgMg An organic light emitting device was manufactured by vacuum depositing to a thickness of 800Å (cathode electrode) to form an electrode, and forming a capping layer with a thickness of 600Å using compound CP01.

Examples 1-2 to 1-6, 2-1 to 2-6, 3-1 to 3-5, 4-1 to 4-6, Comparative Examples 1-1 to 1-6, 2-1 to 2- 3, 3-1, 3-2, 4-1 and 4-2

The same method as Example 1-1 was used, except that the compounds shown in Tables 4 to 7 below were used instead of Compound D1 when forming the emitting layer, and the compounds shown in Tables 4 to 7 below were used instead of Compound CP01 when forming the capping layer. An organic light emitting device was manufactured.

Evaluation Example 2. Evaluation of characteristics of organic light emitting device

Color purity (CIEx and CIEy coordinates), front (0°) luminous efficiency (cd/A), and side (45°) luminous efficiency (cd) at luminance of 400 cd/m ² of the organic light emitting devices manufactured in the above examples and comparative examples. /A) was evaluated using a luminance meter (Minolta Cs-1000A), and using the results, the positive aspect ratio was expressed as the ratio of the side luminous efficiency to the front luminous efficiency (side luminous efficiency/front luminous efficiency), respectively. Efficiency and lateral efficiency were expressed as relative ratios to the results of Comparative Example 1. These are summarized in Tables 4 to 7, respectively.

dopant capping layer Front luminous efficiency side luminous efficiency CIEx CIey Example 1-1 D4 CP01 3.628 3.429 0.136 0.06 Example 1-2 D4 CP02 3.556 3.199 0.135 0.06 Example 1-3 D4 CP03 3.515 3.208 0.135 0.06 Example 1-4 D4 CP04 3.427 3.293 0.136 0.06 Example 1-5 D4 CP05 3.666 3.369 0.136 0.06 Example 1-6 D4 CP06 3.663 3.389 0.136 0.06 Comparative Example 1 A1 B1 One One 0.131 0.059 Comparative example 2 A1 B2 1.208 1.061 0.131 0.059 Comparative example 3 A2 B1 1.806 1.557 0.131 0.06 Comparative example 4 A2 B2 1.836 1.586 0.132 0.06 Comparative Example 5 A1 CP14 0.995 0.984 0.131 0.058 Comparative Example 6 A2 CP14 1.807 1.57 0.131 0.06 Comparative Example 1-1 D4 B1 3.386 3.118 0.135 0.06 Comparative Example 1-2 D4 B3 3.373 3.364 0.135 0.06 Comparative Example 1-3 D4 B6 3.432 3.270 0.135 0.06 Comparative Example 1-4 D4 B7 3.505 3.226 0.135 0.06 Comparative Example 1-5 D4 B8 3.481 3.231 0.136 0.06 Comparative Example 1-6 D4 B9 3.517 3.226 0.136 0.06 Comparative Example 1-7 A3 CP01 0.542 0.467 0.133 0.059 Comparative Example 1-8 A3 CP02 0.551 0.476 0.133 0.058

dopant capping layer Front luminous efficiency side luminous efficiency CIEx CIey Example 2-1 D5 CP01 3.12 2.691 0.137 0.059 Example 2-2 D5 CP02 2.987 2.598 0.137 0.059 Example 2-3 D5 CP03 2.941 2.55 0.137 0.059 Example 2-4 D5 CP04 2.954 2.566 0.136 0.06 Example 2-5 D5 CP05 3.138 2.706 0.137 0.059 Example 2-6 D5 CP06 3.139 2.732 0.137 0.059 Comparative Example 1 A1 B1 One One 0.131 0.059 Comparative example 2 A1 B2 1.208 1.061 0.131 0.059 Comparative example 3 A2 B1 1.806 1.557 0.131 0.06 Comparative example 4 A2 B2 1.836 1.586 0.132 0.06 Comparative Example 5 A1 CP14 0.995 0.984 0.131 0.058 Comparative Example 6 A2 CP14 1.807 1.57 0.131 0.06 Comparative Example 2-1 D5 B1 2.84 2.459 0.136 0.059 Comparative Example 2-2 D5 B3 2.862 2.489 0.137 0.059 Comparative Example 2-3 D5 B6 2.915 2.533 0.137 0.06

dopant capping layer Front luminous efficiency side luminous efficiency CIEx CIey Example 3-1 D7 CP01 4.154 3.597 0.133 0.06 Example 3-2 D7 CP02 4.086 3.544 0.134 0.06 Example 3-3 D7 CP03 3.931 3.397 0.133 0.06 Example 3-4 D7 CP04 4.146 3.611 0.133 0.06 Example 3-5 D7 CP05 4.074 3.536 0.134 0.059 Comparative Example 1 A1 B1 One One 0.131 0.059 Comparative example 2 A1 B2 1.208 1.061 0.131 0.059 Comparative Example 3 A2 B1 1.806 1.557 0.131 0.06 Comparative Example 4 A2 B2 1.836 1.586 0.132 0.06 Comparative Example 5 A1 CP14 0.995 0.984 0.131 0.058 Comparative Example 6 A2 CP14 1.807 1.57 0.131 0.06 Comparative Example 3-1 D7 B1 3.878 3.347 0.133 0.059 Comparative Example 3-2 D7 B3 3.908 3.372 0.134 0.06

dopant capping layer Front luminous efficiency side luminous efficiency CIEx CIey Example 4-1 D8 CP01 4.385 3.817 0.133 0.059 Example 4-2 D8 CP02 4.302 3.726 0.133 0.059 Example 4-3 D8 CP03 4.282 3.695 0.133 0.06 Example 4-4 D8 CP04 4.129 3.587 0.132 0.06 Example 4-5 D8 CP05 4.44 3.833 0.133 0.059 Example 4-6 D8 CP06 4.48 3.869 0.133 0.06 Comparative Example 1 A1 B1 One One 0.131 0.059 Comparative example 2 A1 B2 1.208 1.061 0.131 0.059 Comparative Example 3 A2 B1 1.806 1.557 0.131 0.06 Comparative Example 4 A2 B2 1.836 1.586 0.132 0.06 Comparative Example 5 A1 CP14 0.995 0.984 0.131 0.058 Comparative Example 6 A2 CP14 1.807 1.57 0.131 0.06 Comparative Example 4-1 D8 B1 4.081 3.529 0.133 0.059 Comparative Example 4-2 D8 B3 4.069 3.532 0.133 0.06

From Tables 4 to 7, the organic light emitting devices of Examples 1-1 to 1-6, 2-1 to 2-6, 3-1 to 3-5, and 4-1 to 4-6 have high front emission efficiency and It can be confirmed that it has side luminous efficiency at the same time.

In addition, from Tables 4 to 7, the organic light emitting devices of Examples 1-1 to 1-6 have a front luminous efficiency of a higher or equivalent level compared to Comparative Examples 1 to 6 and Comparative Examples 1-1 to 1-8, and The organic light emitting devices of Examples 2-1 to 2-6 have side luminescence efficiency, and have a front luminescence efficiency and a side luminescence efficiency that are higher or equivalent to those of Comparative Examples 1 to 6 and Comparative Examples 2-1 to 2-3. The organic light emitting devices of Examples 3-1 to 3-5 have higher front luminescence efficiency and side luminescence efficiency compared to Comparative Examples 1 to 6, Comparative Examples 3-1 and 3-2, and Example 4- It can be confirmed that the organic light emitting devices of 1 to 4-6 have high front and side luminescence efficiencies compared to Comparative Examples 1 to 6 and Comparative Examples 4-1 and 4-2.

Claims (20)

first electrode;
a second electrode opposite the first electrode;
an intermediate layer disposed between the first electrode and the second electrode and including a light emitting layer; and
It includes a capping layer disposed on the outside of the first electrode or on the outside of the second electrode,
The light emitting layer includes a first emitter,
The first emitter emits first light having a maximum emission wavelength of 470 nm or less,
The first emitter includes platinum (Pt),
The capping layer includes an amine compound,
The first emitter satisfies at least one of the following conditions 1-1 and 1-2,
The amine compound has a refractive index of 1.84 or more for light at 450 nm and satisfies at least one of the following conditions 2-1 and 2-2:
<Condition 1-1>
HOMO energy level is -4.5 eV or less
<Condition 1-2>
LUMO energy level is below -1.0 eV
<Condition 2-1>
HOMO energy level is -5.36 eV or less
<Condition 2-2>
LUMO energy level is -1.5 eV or less. According to paragraph 1,
A light emitting device wherein the half width of the first light is 20 nm to 60 nm. According to paragraph 1,
The first emitter satisfies both conditions 1-1 and 1-2,
The amine compound is a light emitting device that satisfies both conditions 2-1 and 2-2. According to paragraph 1,
The first emitter includes a first ligand bound to the platinum,
The first ligand includes ring A ₁ , ring A ₂ , ring A ₃ and ring A ₄ directly bonded to platinum,
The ring A ₁ , ring A ₂ , ring A ₃ and ring A ₄ are each independently a C ₅ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group. According to clause 4,
The first ligand is a tetradentate ligand,
A light emitting device comprising three cyclometallated rings formed by a chemical bond between the platinum and the first ligand. According to clause 4,
Ring A ₁ includes a 5-membered ring containing at least one nitrogen (N),
A light emitting device in which the five-membered ring and the platinum are bonded to each other. According to clause 4,
Ring A ₂ and ring A ₃ are connected to each other through a first connector,
A light emitting device wherein the first connector includes at least one oxygen (O). According to paragraph 1,
The amine compound is a light emitting device comprising a benzoxazole group, a benzthiazole group, a naphthoxazole group, a naphthothiazole group, or any combination thereof. first electrode;
a second electrode opposite the first electrode;
an intermediate layer disposed between the first electrode and the second electrode and including a light emitting layer; and
It includes a capping layer disposed on the outside of the first electrode or on the outside of the second electrode,
The light-emitting layer includes an organometallic compound represented by the following formula (1),
The capping layer includes an amine compound,
The amine compound is a light emitting device containing three or more moieties represented by the following formula (2):
<Formula 1>

In Formula 1,
M ₁₁ is a transition metal,
X ₁₁ to X ₁₄ are independently C or N,
Rings CY ₁₁ to CY ₁₄ are independently a C ₅ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group,
L ₁₁ to L ₁₃ are independently of each other, a single bond, *-C(R _1a )(R _1b )-*', *-C(R _1a )=*', *=C(R _1a )-*', *-C(R _1a )=C(R _1b )-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *- B(R _1a )-*', *-N(R _1a )-*', *-O-*', *-P(R _1a )-*', *-Si(R _1a )(R _1b )- *', *-P(=O)(R _1a )-*', *-S-*', *-S(=O)-*', *-S(=O) ₂ -*' or *- Ge(R _1a )(R _1b )-*', where * and *' are each binding sites with neighboring atoms,
n11 to n13 are independently integers of 1 to 5,
R ₁₁ to R ₁₄ , R _1a and R _1b are each independently substituted with hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R _10a or Unsubstituted C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group unsubstituted or substituted with at least one R _10a , C ₂ -C ₆₀ alkynyl group unsubstituted or substituted with at least one R _10a , at least one C ₁ -C ₆₀ alkoxy group substituted or unsubstituted with R _10a , C ₁ -C ₆₀ alkylthio group substituted or unsubstituted with at least one R _10a , C ₃ substituted or unsubstituted with at least one R _10a -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group unsubstituted or substituted with at least one R _10a , C ₆ -C ₆₀ aryloxy group unsubstituted or substituted with at least one R _10a , at least C ₆ -C ₆₀ arylthio group, -C(Q ₁ )(Q ₂ )(Q ₃ ), -Si(Q ₁ )(Q ₂ )(Q ₃ ), -C 6 -C 60 arylthio group, substituted or unsubstituted with one R _10a N(Q ₁ )(Q ₂ ), -B(Q ₁ )(Q ₂ ), -C(=O)(Q ₁ ), -S(=O) ₂ (Q ₁ ) or -P(=O) (Q ₁ )(Q ₂ ),
a11 to a14 are independently integers from 0 to 10,
<Formula 2>

In Formula 2 above,
Ring CY ₂₁ is, independently of each other, a C ₅ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group,
X ₂₁ - is C(R _21a )(R _21b ), N(R _21a ), O or S,
X ₂₂ is C(R _22a ) or N,
Y ₂₁ is C or N, Y ₂₂ is C or N,
R ₂₁ , R _21a , R _21b and R _22a are each independently substituted with hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R _10a or Unsubstituted C ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group unsubstituted or substituted with at least one R _10a , C ₂ -C ₆₀ alkynyl group unsubstituted or substituted with at least one R _10a , at least one C ₁ -C ₆₀ alkoxy group substituted or unsubstituted with R _10a , C ₃ -C ₆₀ carbocyclic group substituted or unsubstituted with at least one R _10a , C substituted or unsubstituted with at least one R _{10a 1} -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryloxy group substituted or unsubstituted with at least one R _10a , C ₆ -C ₆₀ arylthio group substituted or unsubstituted with at least one R _10a , - C(Q ₁ )(Q ₂ )(Q ₃ ), -Si(Q ₁ )(Q ₂ )(Q ₃ ), -N(Q ₁ )(Q ₂ ), -B(Q ₁ )(Q ₂ ) , -C(=O)(Q ₁ ), -S(=O) ₂ (Q ₁ ) or -P(=O)(Q ₁ )(Q ₂ ),
b21 is one of the integers from 0 to 10,
* is the binding site with the neighboring atom,
The R _10a is,
Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, or nitro group;
Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C ₃ -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryl Oxy group, C ₆ -C ₆₀ Arylthio group, -Si(Q ₁₁ )(Q ₁₂ )(Q ₁₃ ), -N(Q ₁₁ )(Q ₁₂ ), -B(Q ₁₁ )(Q ₁₂ ), - C, unsubstituted or substituted with C(=O)(Q ₁₁ ), -S(=O) ₂ (Q ₁₁ ), -P(=O)(Q ₁₁ )(Q ₁₂ ), or any combination thereof. ₁ -C ₆₀ alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group, or C ₁ -C ₆₀ alkoxy group;
Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, 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 ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryloxy group, C ₆ -C ₆₀ arylthio group, -Si(Q ₂₁ )( Q ₂₂ )(Q ₂₃ ), -N(Q ₂₁ )(Q ₂₂ ), -B(Q ₂₁ )(Q ₂₂ ), -C(=O)(Q ₂₁ ), -S(=O) ₂ (Q ₂₁ ), -P(=O)(Q ₂₁ )(Q ₂₂ ), or any combination thereof, substituted or unsubstituted, C ₃ -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, C ₆ -C ₆₀ aryloxy group, or C ₆ -C ₆₀ arylthio group; or
-Si(Q ₃₁ )(Q ₃₂ )(Q ₃₃ ), -N(Q ₃₁ )(Q ₃₂ ), -B(Q ₃₁ )(Q ₃₂ ), -C(=O)(Q ₃₁ ), -S (=O) ₂ (Q ₃₁ ), or -P(=O)(Q ₃₁ )(Q ₃₂ );
ego,
Q ₁ to Q ₃ , Q ₁₁ to Q ₁₃ , Q ₂₁ to Q ₂₃ and Q ₃₁ to Q ₃₃ are independently hydrogen; heavy hydrogen; -F; -Cl; -Br; -I; hydroxyl group; Cyano group; nitro group; Substituted or unsubstituted with deuterium, -F, cyano group, phenyl group, biphenyl group, pyridinyl group, pyrimidinyl group, pyridazinyl group, pyrazinyl group, triazinyl group, or any combination thereof, C ₁ -C ₆₀ Alkyl group, C ₂ -C ₆₀ alkenyl group, C ₂ -C ₆₀ alkynyl group, or C ₁ -C ₆₀ alkoxy group; Or deuterium, -F, cyano group, C ₁ -C ₆₀ alkyl group, C ₁ -C ₆₀ alkoxy group, phenyl group, biphenyl group, pyridinyl group, pyrimidinyl group, pyridazinyl group, pyrazinyl group, triazinyl group, or It is a C ₃ -C ₆₀ carbocyclic group or a C ₁ -C ₆₀ heterocyclic group, substituted or unsubstituted by any combination thereof. According to clause 9,
The organometallic compound emits first light,
A light emitting device wherein the maximum emission wavelength of the first light is 470 nm or less. According to clause 9,
A light emitting device wherein the amine compound has a refractive index of 1.85 to 2.5 with respect to the second light having a wavelength in the range ± 20 nm of the maximum emission wavelength of the first light. According to clause 9,
Ring CY ₁₁ is indole group, azaindole group, pyrrole group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, thiazole group, isothiazole group, oxadiazole group, thiazole Diazole group, benzopyraro group, benzoimidazole group, benzoxazole group, benzoxadiazole group or benzothiadiazole group,
Ring CY- ₁₂ is a benzene group or a naphthalene group,
Ring CY ₁₃ is a benzene group, naphthalene group, indole group, carbazole group or azacarbazole group,
Ring CY ₁₄ is a pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group, quinazoline group or phenanthroline group. According to clause 9,
A light emitting device in which the amine compound is a compound represented by the following formula (3):
<Formula 3>

Of the above formula 3,
L ₃₁ to L ₃₃ are each independently a single bond, a C ₃ -C ₆₀ carbocyclic group substituted or unsubstituted with at least one R _10a , or a C ₁ -C ₆₀ substituted or unsubstituted with at least one R _10a It is a heterocyclic group,
n31 to n33 are independently integers of 1 to 3,
R ₃₁ to R ₃₃ are moieties represented by Formula 2,
The descriptions of R _10a and the moiety represented by Formula 2 are the same as those described in paragraph 9, respectively. According to clause 9,
L ₃₁ to L ₃₃ are independently a single bond; Or a light emitting device, which is a group represented by any one of the following formulas L-1 to L-9:

In the formulas L-1 to L-9,
R ₃₀ is the same as the description for R _10a in Article 9,
b30 is an integer from 1 to 4,
b31 is an integer from 1 to 3,
* and *' are bonding sites with neighboring atoms, respectively. According to clause 9,
The moiety represented by Formula 2 is a light emitting device that is a group represented by any one of the following Formulas 2-1 to 2-5:

In formulas 2-1 to 2-5,
Y ₂₃ is C(E ₂₃ ) or N, Y ₂₄ is C(E ₂₄ ) or N, Y ₂₅ is C(E ₂₅ ) or N, Y ₂₆ is C(E ₂₆ ) or N,
Y ₃₁ is C(E ₃₁ ) or N, Y ₃₂ is C(E ₃₂ ) or N, Y ₃₃ is C(E ₃₃ ) or N, Y ₃₄ is C(E ₃₄ ) or N, Y ₃₅ is C(E ₃₅ ) or N, Y ₃₆ is C(E ₃₆ ) or N, Y ₃₇ is C(E ₃₇ ) or N, Y ₃₈ is C(E ₃₈ ) or N,
Y ₄₁ is C(E ₄₁ ) or N, Y ₄₂ is C(E ₄₂ ) or N, Y ₄₃ is C(E ₄₃ ) or N, Y ₄₄ is C(E ₄₄ ) or N,
E ₂₃ to E ₂₆ , E ₃₁ to E ₃₈ and E ₄₁ to 4 ₆₄ are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one C ₁ -C ₆₀ alkyl group substituted or unsubstituted with R _10a , C ₂ -C ₆₀ alkenyl group substituted or unsubstituted with at least one R _10a , C ₂ -C ₆₀ unsubstituted or substituted with at least one R _10a Alkynyl group, C ₁ -C ₆₀ alkoxy group substituted or unsubstituted with at least one R _10a , C ₁ -C ₆₀ alkylthio group substituted or unsubstituted with at least one R _10a , substituted with at least one R _10a or Unsubstituted C ₃ -C ₆₀ carbocyclic group, C ₁ -C ₆₀ heterocyclic group, unsubstituted or substituted with at least one R _10a , C ₆ -C ₆₀ unsubstituted or substituted with at least one R _10a Aryloxy group, C ₆ -C ₆₀ arylthio group, substituted or unsubstituted with at least one R _10a , -C(Q ₁ )(Q ₂ )(Q ₃ ), -Si(Q ₁ )(Q ₂ )( Q ₃ ), -N(Q ₁ )(Q ₂ ), -B(Q ₁ )(Q ₂ ), -C(=O)(Q ₁ ), -S(=O) ₂ (Q ₁ ) or - P(=O)(Q ₁ )(Q ₂ ),
The descriptions of X ₂₁ , X ₂₂ , R _10a and Q ₁ to Q ₃ are the same as described in paragraph 9,
* is a bonding site with a neighboring atom. According to clause 9,
The capping layer includes two or more layers,
A light emitting device wherein adjacent layers of the two or more layers have different refractive indices for a wavelength of 450 nm. An electronic device comprising the light emitting device of any one of claims 1 to 16. According to clause 17,
Further comprising a thin film transistor,
The thin film transistor includes a source electrode and a drain electrode,
An electronic device, wherein the first electrode of the light emitting device is electrically connected to at least one of a source electrode and a drain electrode of the thin film transistor. A consumer product comprising the light emitting device of any one of claims 1 to 16. According to clause 19,
Flat panel displays, curved displays, computer monitors, medical monitors, televisions, billboards, indoor or outdoor lighting and/or signal lights, head-up displays, fully or partially transparent displays, flexible displays, rollable displays, foldable ( foldable displays, stretchable displays, laser printers, phones, cell phones, tablets, phablets, personal digital assistants (PDAs), wearable devices, laptop computers, digital cameras, camcorders, viewfinders, micro displays, 3D displays. , a consumer product that is one of a virtual reality or augmented reality display, a vehicle, a video wall containing multiple displays tiled together, a theater or stadium screen, a phototherapy device, and a sign.