WO2020149663A1 - Dispositif électroluminescent organique - Google Patents

Dispositif électroluminescent organique Download PDF

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WO2020149663A1
WO2020149663A1 PCT/KR2020/000799 KR2020000799W WO2020149663A1 WO 2020149663 A1 WO2020149663 A1 WO 2020149663A1 KR 2020000799 W KR2020000799 W KR 2020000799W WO 2020149663 A1 WO2020149663 A1 WO 2020149663A1
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substituted
group
unsubstituted
compound
formula
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Korean (ko)
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김훈준
최지영
서상덕
이우철
김주호
이동훈
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주식회사 엘지화학
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Priority to CN202080005498.4A priority Critical patent/CN112789742A/zh
Publication of WO2020149663A1 publication Critical patent/WO2020149663A1/fr

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/12—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/658—Organoboranes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6574—Polycyclic condensed heteroaromatic hydrocarbons comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6576—Polycyclic condensed heteroaromatic hydrocarbons comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers

Definitions

  • the present application relates to an organic light emitting device comprising a compound of Formula 1 and a compound of Formula 2.
  • the organic light emitting phenomenon refers to a phenomenon that converts electrical energy into light energy using an organic material.
  • An organic light emitting device using an organic light emitting phenomenon usually has a structure including an anode and a cathode and an organic material layer therebetween.
  • the organic material layer is often composed of a multi-layered structure composed of different materials, for example, may be formed of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like.
  • This application is the first electrode; A second electrode provided to face the first electrode; And one or more organic material layers provided between the first electrode and the second electrode,
  • At least one layer of the organic material layer provides an organic light emitting device comprising the compound of Formula 1 and the compound of Formula 2.
  • A, B and C are each independently a substituted or unsubstituted aromatic hydrocarbon ring; Or a substituted or unsubstituted heterocycle,
  • X3 and X4 are each independently O; S; Or NR,
  • Y1 is boron or phosphine oxide
  • R is hydrogen; heavy hydrogen; Halogen group; Cyano group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted silyl group; A substituted or unsubstituted alkoxy group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group,
  • the adjacent groups among R, A, B and C may combine with each other to form a ring
  • X1 and X2 are each independently O or S,
  • R1 to R3 are each independently hydrogen; heavy hydrogen; Halogen group; Cyano group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted silyl group; A substituted or unsubstituted alkoxy group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group,
  • a and b are each independently an integer from 0 to 7,
  • c is an integer from 0 to 8
  • the organic light emitting device using the compound according to an exemplary embodiment of the present application may have a low driving voltage, high luminous efficiency, and/or long life.
  • FIG. 1 shows an example of an organic light emitting device in which a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4 are sequentially stacked.
  • the substrate (1), the anode (2), the hole injection layer (5), the hole transport layer (6), the light emitting layer (3), the electron transport layer (7), the electron injection layer (8) and the cathode (4) sequentially It shows an example of an organic light-emitting device stacked.
  • the present specification provides an organic light emitting device including the compound of Formula 1 and the compound of Formula 2.
  • substitution means that the hydrogen atom bonded to the carbon atom of the compound is replaced with another substituent, and the position to be substituted is not limited to a position where the hydrogen atom is substituted, that is, a position where the substituent is substitutable, and when two or more are substituted , 2 or more substituents may be the same or different from each other.
  • substituted or unsubstituted in this specification is deuterium; Halogen group; Nitrile group; Nitro group; Hydroxy group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; A substituted or unsubstituted alkenyl group; A substituted or unsubstituted amine group; A substituted or unsubstituted aryl group; And substituted or unsubstituted heterocyclic groups, substituted with 1 or 2 or more substituents selected from the group, or substituted with 2 or more substituents among the exemplified substituents, or having no substituents.
  • a substituent having two or more substituents may be a biphenyl group. That is, the biphenyl group may be an aryl group or may be interpreted as a substituent to which two phenyl groups are connected.
  • examples of the halogen group include fluorine, chlorine, bromine or iodine.
  • the alkyl group may be straight chain or branched chain, and carbon number is not particularly limited, but is preferably 1 to 50.
  • Specific examples are methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n-pentyl , Isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl, n -Heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n
  • the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, specifically cyclopropyl, cyclobutyl, cyclopentyl, 3-methylcyclopentyl, 2,3-dimethylcyclopentyl, cyclohexyl, 3-methylcyclohexyl, 4-methylcyclohexyl, 2,3-dimethylcyclohexyl, 3,4,5-trimethylcyclohexyl, 4-tert-butylcyclohexyl, cycloheptyl, cyclooctyl, and the like, but is not limited thereto. Does not.
  • the alkoxy group may be a straight chain, branched chain or cyclic chain.
  • the number of carbon atoms of the alkoxy group is not particularly limited, but is preferably 1 to 20 carbon atoms.
  • the alkenyl group may be a straight chain or a branched chain, and the number of carbon atoms is not particularly limited, but is preferably 2 to 40.
  • Specific examples include vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1- Butenyl, 1,3-butadienyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2-( Naphthyl-1-yl)vinyl-1-yl, 2,2-bis(diphenyl-1-yl)vinyl-1-yl, steelbenyl group, styrenyl group, and the like, but are not limited thereto.
  • the amine group is -NH 2 ; Alkylamine groups; N-alkylarylamine group; Arylamine group; N-aryl heteroarylamine group; It may be selected from the group consisting of N-alkylheteroarylamine groups and heteroarylamine groups, and the number of carbon atoms is not particularly limited, but is preferably 1 to 30.
  • amine groups include methylamine groups; Dimethylamine group; Ethylamine group; Diethylamine group; Phenylamine group; Naphthylamine group; Biphenylamine group; Anthracenylamine group; 9-methyl anthracenylamine group; Diphenylamine group; N-phenyl naphthylamine group; Ditolylamine group; N-phenyltolylamine group; Triphenylamine group; N-phenylbiphenylamine group; N-phenyl naphthylamine group; N-biphenyl naphthylamine group; N-naphthylfluorenylamine group; N-phenylphenanthrenylamine group; N-biphenylphenanthrenylamine group; N-phenylfluorenylamine group; N-phenyl terphenylamine group; N-phenanthrenylfluorenylamine group; N-biphenylfluoren
  • the silyl group may be represented by the formula of —SiRaRbRc, wherein Ra, Rb and Rc are the same as or different from each other, and each independently hydrogen; A substituted or unsubstituted alkyl group; Or it may be a substituted or unsubstituted aryl group.
  • the silyl group is specifically a trimethylsilyl group; Triethylsilyl group; t-butyldimethylsilyl group; Vinyl dimethyl silyl group; Propyl dimethyl silyl group; Triphenylsilyl group; Diphenylsilyl group; Phenylsilyl group, and the like, but is not limited thereto.
  • the aryl group is not particularly limited, but is preferably 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group.
  • the number of carbon atoms is not particularly limited, but is preferably 6 to 25 carbon atoms.
  • the monocyclic aryl group may be a phenyl group, a biphenyl group, or a terphenyl group, but is not limited thereto.
  • the aryl group is a polycyclic aryl group
  • the number of carbon atoms is not particularly limited. It is preferable that it has 10 to 24 carbon atoms.
  • the polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthryl group, pyrenyl group, perylenyl group, chrysenyl group, fluorenyl group, and the like, but is not limited thereto.
  • the fluorenyl group may be substituted, and adjacent substituents may combine with each other to form a ring.
  • the heterocyclic group includes one or more non-carbon atoms, heteroatoms, and specifically, the heteroatoms may include one or more atoms selected from the group consisting of O, N, Se, and S.
  • the number of carbon atoms in the heterocyclic group is not particularly limited, but is preferably 2 to 60 carbon atoms.
  • heterocyclic group examples include thiophene group, furan group, pyrrol group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, bipyridyl group, pyrimidyl group, triazine group, triazole group, Acridil group, pyridazine group, pyrazinyl group, quinolinyl group, quinazolinyl group, quinoxalinyl group, phthalazinyl group, pyridopyrimidinyl group, pyridopyrazinyl group, pyrazino pyrazinyl group, isoquinoline group , Indole group, carbazole group, benzoxazole group, benzimidazole group, benzothiazole group, benzocarbazole group, benzothiophene group, dibenzothiophene group, benzofuranyl group, phenan
  • heterocyclic group In the present specification, a description of the aforementioned heterocyclic group may be applied, except that the heterocycle is a divalent group.
  • the meaning of forming a ring by bonding with adjacent groups to form a ring is a substituted or unsubstituted hydrocarbon ring by bonding with adjacent groups; And it forms a substituted or unsubstituted heterocycle, the hydrocarbon ring and the heterocycle, respectively, may be an aliphatic, aromatic or condensed form thereof, and is not limited thereto.
  • the aliphatic hydrocarbon ring means a ring composed of only carbon and hydrogen atoms as a ring that is not aromatic.
  • examples of the aromatic hydrocarbon ring include a phenyl group, a naphthyl group, anthracenyl group, and the like, but are not limited thereto.
  • an aliphatic heterocycle means an aliphatic ring containing one or more of heteroatoms.
  • an aromatic heterocycle means an aromatic ring containing one or more of heteroatoms.
  • the aliphatic hydrocarbon ring, aromatic hydrocarbon ring, aliphatic heterocyclic ring and aromatic heterocyclic ring may be monocyclic or polycyclic, respectively.
  • adjacent groups when adjacent groups are combined with each other to form a ring, adjacent groups may be combined as follows to form a ring.
  • A1 to A7 are each independently hydrogen; heavy hydrogen; Halogen group; A substituted or unsubstituted silyl group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group,
  • a2 to a7 are each an integer from 0 to 4,
  • the “adjacent” group refers to a substituent substituted on an atom directly connected to an atom in which the substituent is substituted, a substituent positioned closest to the substituent and the other substituent substituted on the atom in which the substituent is substituted.
  • two substituents substituted at the ortho position on the benzene ring and two substituents substituted on the same carbon in the aliphatic ring may be interpreted as "adjacent" groups to each other.
  • A, B and C are each independently, a substituted or unsubstituted aromatic hydrocarbon ring; Or a substituted or unsubstituted heterocycle.
  • A, B, and C are each independently, a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 60 carbon atoms; Or a substituted or unsubstituted heterocycle having 3 to 60 carbon atoms.
  • A, B, and C are each independently, a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 carbon atoms; Or a substituted or unsubstituted heterocycle having 3 to 30 carbon atoms.
  • the A, B and C are each independently, substituted or unsubstituted benzene; Substituted or unsubstituted naphthalene; Or substituted or unsubstituted dibenzofuran.
  • the A, B and C are each independently, substituted or unsubstituted benzene; Substituted or unsubstituted naphthalene; Or dibenzofuran.
  • A is benzene substituted or unsubstituted with one or more substituents selected from the group consisting of amine groups, carbazole groups and alkyl groups; naphthalene; Or dibenzofuran.
  • the A is benzene substituted or unsubstituted with one or more substituents selected from the group consisting of diphenylamine, ditolylamine, carbazole group, methyl group and tert-butyl group; naphthalene; Or dibenzofuran.
  • B is benzene substituted or unsubstituted with an alkyl group; Or naphthalene unsubstituted or substituted with an alkyl group.
  • the B is a benzene substituted or unsubstituted with a methyl group or tert-butyl group; Or naphthalene unsubstituted or substituted with tert-butyl group.
  • C is benzene which is unsubstituted or substituted with an alkyl group.
  • C is a benzene unsubstituted or substituted with a methyl group or a tert-butyl group.
  • Y1 is boron or phosphine oxide.
  • Y1 is boron
  • X3 and X4 are each O; S; Or NR.
  • X3 and X4 is O.
  • X3 and X4 is S.
  • X3 and X4 are each NR.
  • R is hydrogen; heavy hydrogen; Halogen group; Cyano group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted silyl group; A substituted or unsubstituted alkoxy group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group.
  • R is a substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group.
  • R is a substituted or unsubstituted aryl group.
  • R is a substituted or unsubstituted phenyl group; Or a substituted or unsubstituted naphthyl group.
  • R is a phenyl group unsubstituted or substituted with an alkyl group having 1 to 10 carbon atoms; Or a naphthyl group.
  • R is a phenyl group unsubstituted or substituted with a methyl group or a tert-butyl group; Or a naphthyl group.
  • adjacent groups among R, A, B, and C may combine with each other to form a ring.
  • adjacent groups among R, A, B, and C may combine with each other to form a substituted or unsubstituted hydrocarbon ring or a substituted or unsubstituted hetero ring, and may be aliphatic, aromatic, or their It may be in a condensed form.
  • adjacent groups among R, A, B, and C combine with each other to form a substituted or unsubstituted hydrocarbon ring having 6 to 60 carbon atoms or a substituted or unsubstituted heterocycle having 2 to 60 carbon atoms. And may be aliphatic, aromatic, or a condensed form thereof.
  • adjacent groups among R, A, B, and C combine with each other to form a substituted or unsubstituted hydrocarbon ring having 6 to 30 carbon atoms or a substituted or unsubstituted heterocycle having 2 to 30 carbon atoms. And may be aliphatic, aromatic, or a condensed form thereof.
  • the formula 1 may be represented by the following formula 1-1.
  • R'and R" are each independently hydrogen; deuterium; halogen group; cyano group; substituted or unsubstituted alkyl group; substituted or unsubstituted silyl group; substituted or unsubstituted alkoxy group; substituted or unsubstituted aryl group Or a substituted or unsubstituted heterocyclic group,
  • R', R", A, B and C adjacent groups may combine with each other to form a ring.
  • R'and R" are each independently a substituted or unsubstituted alkyl group; a substituted or unsubstituted aryl group; or a substituted or unsubstituted heterocyclic group.
  • R'and R" are each independently a substituted or unsubstituted aryl group.
  • R'and R" are each independently a substituted or unsubstituted phenyl group; or a substituted or unsubstituted naphthyl group.
  • R'and R" are each independently a phenyl group unsubstituted or substituted with an alkyl group having 1 to 10 carbon atoms; or a naphthyl group.
  • R'and R" are each independently a methyl group or a tert-butyl group-substituted or unsubstituted phenyl group; or a naphthyl group.
  • adjacent groups among R', R", A, B, and C may combine with each other to form a ring.
  • adjacent groups among R', R", A, B, and C may combine with each other to form a substituted or unsubstituted hydrocarbon ring or a substituted or unsubstituted hetero ring, and an aliphatic, Aromatic or condensed form thereof.
  • adjacent groups among R', R", A, B, and C are bonded to each other to form a substituted or unsubstituted hydrocarbon ring having 6 to 60 carbon atoms or a substituted or unsubstituted carbon number having 2 to 60 carbon atoms.
  • Heterocycles may be formed, and may be aliphatic, aromatic, or condensed forms thereof.
  • adjacent groups among R', R", A, B, and C are bonded to each other to form a substituted or unsubstituted hydrocarbon ring having 6 to 30 carbon atoms or a substituted or unsubstituted carbon atom having 2 to 30 carbon atoms.
  • Heterocycles may be formed, and may be aliphatic, aromatic, or condensed forms thereof.
  • the formula 1 may be represented by the following formula 1-2.
  • R'and R" are each independently a substituted or unsubstituted aryl group; or a substituted or unsubstituted heterocyclic group,
  • R', R", B and C may combine with each other to form a substituted or unsubstituted hydrocarbon ring or a substituted or unsubstituted hetero ring, and may be aliphatic, aromatic or a condensed form thereof.
  • adjacent groups among R', R", B and C are bonded to each other to form a substituted or unsubstituted hydrocarbon ring having 6 to 60 carbon atoms or a substituted or unsubstituted heterocycle having 2 to 60 carbon atoms. And may be aliphatic, aromatic, or a condensed form thereof.
  • adjacent groups among R', R", B and C are bonded to each other to form a substituted or unsubstituted hydrocarbon ring having 6 to 30 carbon atoms or a substituted or unsubstituted heterocycle having 2 to 30 carbon atoms. And may be aliphatic, aromatic, or a condensed form thereof.
  • adjacent groups of R'and B may combine with each other to form carbazole or spiro [acridine-9,9'-fluorene].
  • adjacent groups of R" and C may combine with each other to form carbazole or spiro [acridine-9,9'-fluorene].
  • the formula 1 is selected from the following structural formula.
  • X1 and X2 are each independently O or S.
  • X1 and X2 is O.
  • X1 and X2 is S.
  • R1 to R3 are each independently hydrogen; heavy hydrogen; Halogen group; Cyano group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted silyl group; A substituted or unsubstituted alkoxy group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group.
  • R1 to R3 are each independently hydrogen; heavy hydrogen; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group.
  • R1 to R3 are each independently hydrogen; heavy hydrogen; Or a substituted or unsubstituted aryl group having 6 to 60 carbon atoms.
  • R1 to R3 are each independently hydrogen; heavy hydrogen; Or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.
  • R1 to R3 are each independently hydrogen; heavy hydrogen; A substituted or unsubstituted phenyl group; Or a naphthyl group.
  • R1 to R3 are each independently hydrogen; heavy hydrogen; A phenyl group unsubstituted or substituted with deuterium; Or a naphthyl group.
  • R1 to R3 are each independently hydrogen; heavy hydrogen; Phenyl group; Or a naphthyl group.
  • R1 to R3 are hydrogen, a, b and c are 7, 7, and 8, respectively.
  • R1 and R2 are hydrogen
  • R3 is a phenyl group or a naphthyl group
  • a, b and c are 7, 7 and 1, respectively.
  • R1 is a phenyl group
  • R2 and R3 are hydrogen
  • a, b and c are 1, 7 and 8, respectively.
  • R1 and R2 are phenyl groups
  • R3 is hydrogen
  • a, b and c are 1, 1 and 8, respectively.
  • R1 to R3 are deuterium.
  • R1 and R2 are hydrogen, R3 is deuterium.
  • R1 and R3 are deuterium, and R2 is hydrogen.
  • R1 and R2 are deuterium
  • R3 is a deuterium or naphthyl group.
  • R1 and R3 are deuterium, and R2 is a phenyl group substituted with deuterium.
  • a when R1 is deuterium, a may be an integer from 1 to 7, an integer from 3 to 7, an integer from 5 to 7, and an integer from 6 to 7.
  • b when R2 is deuterium, b may be an integer from 1 to 7, an integer from 3 to 7, an integer from 5 to 7, and an integer from 6 to 7.
  • c when R3 is deuterium, c may be an integer of 1 to 8, an integer of 3 to 8, an integer of 5 to 8, an integer of 6 to 8, an integer of 7 to 8.
  • At least one of R1 to R3 is deuterium; Or an aryl group unsubstituted or substituted with deuterium.
  • At least one of R1 to R3 is deuterium; A phenyl group unsubstituted or substituted with deuterium; Or a naphthyl group.
  • the formula 2 is selected from the following structural formula.
  • the organic material layer of the organic light emitting device of the present application may have a single-layer structure, but may have a multi-layer structure in which two or more organic material layers are stacked.
  • the organic light emitting device of the present invention may have a structure including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer as an organic material layer.
  • the structure of the organic light emitting device is not limited to this, and may include fewer organic layers.
  • the organic light emitting device further includes one or two or more layers selected from the group consisting of a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, an electron blocking layer, and a hole blocking layer do.
  • the organic light emitting device includes a first electrode; A second electrode provided to face the first electrode; And one or more organic material layers provided between the first electrode and the second electrode, and at least one layer of the organic material layer includes the compound of Formula 1 and the compound of Formula 2.
  • At least one organic layer may be selected from the group consisting of a light emitting layer, a hole transport layer, a hole injection layer, a layer simultaneously performing hole transport and hole injection, and an electron blocking layer.
  • the organic material layer includes a light emitting layer, and the light emitting layer includes a compound of Formula 1 and a compound of Formula 2.
  • the emission layer may include a compound of Formula 1 as a dopant material, and a compound of Formula 2 as a host material.
  • the weight ratio of the compound of Formula 1 and the compound of Formula 2 is 1:99 to 50:50, preferably 1:99 to 10:90, more preferably 3:97 to 7 It can be :93.
  • the organic light emitting device may be an organic light emitting device having a structure in which an anode, one or more organic material layers, and a cathode are sequentially stacked on a substrate.
  • the organic light emitting device may be an inverted type organic light emitting device in which a cathode, one or more organic material layers, and an anode are sequentially stacked on a substrate.
  • FIGS. 1 and 2 the structure of the organic light emitting device according to the exemplary embodiment of the present application is illustrated in FIGS. 1 and 2.
  • FIG. 1 illustrates a structure of an organic light emitting device in which a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4 are sequentially stacked.
  • the compound of Formula 1 and the compound of Formula 2 may be included in the light emitting layer 3.
  • the structure of the stacked organic light emitting device is illustrated.
  • the compound of Formula 1 and the compound of Formula 2 may be included in the light emitting layer 3.
  • the thickness of the organic material layer containing the compound of Formula 1 and the compound of Formula 2 is 10 ⁇ to 500 ⁇ .
  • the organic light emitting device of the present application may be manufactured by materials and methods known in the art, except that at least one layer of the organic material layer includes the compound of the present application, that is, the compound of Formula 1 and the compound of Formula 2 .
  • the organic material layers may be formed of the same material or different materials.
  • the organic light emitting device of the present application can be manufactured by sequentially laminating a first electrode, an organic material layer, and a second electrode on a substrate.
  • a positive electrode is formed by depositing a metal or conductive metal oxide or alloys thereof on a substrate using a physical vapor deposition (PVD) method such as sputtering or e-beam evaporation.
  • PVD physical vapor deposition
  • an organic material layer including a light emitting layer and an electron transport layer it can be prepared by depositing a material that can be used as a cathode thereon.
  • an organic light emitting device may be formed by sequentially depositing a cathode material, an organic material layer, and a cathode material on a substrate.
  • the compound of Formula 1 and the compound of Formula 2 may be formed as an organic material layer by a solution coating method as well as a vacuum deposition method when manufacturing an organic light emitting device.
  • the solution application method means spin coating, dip coating, doctor blading, inkjet printing, screen printing, spraying, roll coating, and the like, but is not limited to these.
  • an organic light emitting device may be made by sequentially depositing an organic material layer and a cathode material from a cathode material on a substrate (International Patent Application Publication No. 2003/012890).
  • the manufacturing method is not limited thereto.
  • the first electrode is an anode
  • the second electrode is a cathode
  • the first electrode is a cathode
  • the second electrode is an anode
  • the positive electrode material is usually a material having a large work function to facilitate hole injection into the organic material layer.
  • Specific examples of the positive electrode material that can be used in the present invention include metals such as vanadium, chromium, copper, zinc, gold, or alloys thereof; Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); A combination of metal and oxide such as ZnO:Al or SnO 2 :Sb; Conductive polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDOT), polypyrrole and polyaniline, but are not limited thereto.
  • the cathode material is preferably a material having a small work function to facilitate electron injection into an organic material layer.
  • the negative electrode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead or alloys thereof;
  • a multilayer structure material such as LiF/Al or LiO 2 /Al, but is not limited thereto.
  • the hole injection layer is a layer for injecting holes from an electrode, and has the ability to transport holes as a hole injection material, and thus has a hole injection effect at an anode, an excellent hole injection effect for a light emitting layer or a light emitting material, and is produced in the light emitting layer.
  • a compound which prevents migration of the excitons to the electron injection layer or the electron injection material, and has excellent thin film formation ability is preferable.
  • the HOMO (Highest Occupied Molecular Orbital) of the hole injection material is between the work function of the positive electrode material and the HOMO of the surrounding organic material layer.
  • the hole injection material examples include metal porphyrin, oligothiophene, arylamine-based organic substances, hexanitrile hexaazatriphenylene-based organic substances, quinacridone-based organic substances, and perylene-based substances.
  • the hole transport layer is a layer that receives holes from the hole injection layer and transports holes to the light emitting layer.
  • a hole transport material the hole is transported to the light emitting layer by transporting holes from the anode or the hole injection layer, and the mobility of holes is large.
  • the material is suitable. Specific examples include arylamine-based organic materials, conductive polymers, and block copolymers having a conjugated portion and a non-conjugated portion, but are not limited thereto.
  • a material capable of emitting light in the visible region by receiving and bonding holes and electrons from the hole transport layer and the electron transport layer, respectively is preferably a material having good quantum efficiency for fluorescence or phosphorescence.
  • Specific examples include 8-hydroxy-quinoline aluminum complex (Alq3); Carbazole-based compounds; Dimerized Styryl Compound; BAlq; 10-hydroxybenzo quinoline-metal compound; Benzoxazole, benzthiazole and benzimidazole compounds; Poly(p-phenylenevinylene) (PPV) polymers; Spiro compounds; Polyfluorene, rubrene, and the like, but are not limited to these.
  • Alq3 8-hydroxy-quinoline aluminum complex
  • Carbazole-based compounds Dimerized Styryl Compound
  • BAlq 10-hydroxybenzo quinoline-metal compound
  • Benzoxazole, benzthiazole and benzimidazole compounds Poly(p-phenylenevinylene) (PPV) poly
  • the electron transport layer is a layer that receives electrons from the electron injection layer and transports electrons to the light emitting layer.
  • the electron transport material a material capable of receiving electrons from the cathode and transferring them to the light emitting layer is suitable. Do. Specific examples include Al complexes of 8-hydroxyquinoline; Complexes including Alq3; Organic radical compounds; Hydroxyflavone-metal complexes, and the like, but are not limited thereto.
  • the electron transport layer can be used with any desired cathode material as used according to the prior art.
  • suitable cathode materials are conventional materials that have a low work function and are followed by an aluminum or silver layer. Specifically, cesium, barium, calcium, ytterbium and samarium, followed by an aluminum layer or a silver layer in each case.
  • the electron injection layer is a layer that injects electrons from an electrode, has the ability to transport electrons, has an electron injection effect from a cathode, has an excellent electron injection effect with respect to a light emitting layer or a light emitting material, and hole injection of excitons generated in the light emitting layer A compound that prevents migration to the layer and has excellent thin film forming ability is preferred.
  • fluorenone anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preorenylidene methane, anthrone and the like and their derivatives, metal Complex compounds, nitrogen-containing 5-membered ring derivatives, and the like, but are not limited thereto.
  • Examples of the metal complex compound include 8-hydroxyquinolinato lithium, bis(8-hydroxyquinolinato) zinc, bis(8-hydroxyquinolinato) copper, bis(8-hydroxyquinolinato) manganese, Tris(8-hydroxyquinolinato)aluminum, tris(2-methyl-8-hydroxyquinolinato)aluminum, tris(8-hydroxyquinolinato)gallium, bis(10-hydroxybenzo[h] Quinolinato) beryllium, bis(10-hydroxybenzo[h]quinolinato) zinc, bis(2-methyl-8-quinolinato)chlorogallium, bis(2-methyl-8-quinolinato)( There are o-cresolato) gallium, bis (2-methyl-8-quinolinato) (1-naphtholato) aluminum, bis (2-methyl-8-quinolinato) (2-naphtholato) gallium, It is not limited to this.
  • the hole blocking layer is a layer that prevents the cathode from reaching the hole, and may be generally formed under the same conditions as the hole injection layer. Specifically, there are oxadiazole derivatives, triazole derivatives, phenanthroline derivatives, BCP, aluminum complex, and the like, but are not limited thereto.
  • the organic light emitting device may be a front emission type, a back emission type, or a double-sided emission type depending on the material used.
  • n-butyllithium pentane solution (8 ml, 2.5 M in hexane) was added dropwise at 0° C. under an argon atmosphere. After completion of dropping, the mixture was heated to 50°C and stirred for 2 hours. After cooling to -40°C, boron tribromide (2.80ml) was added, the temperature was raised to room temperature and stirred for 4 hours. Then, it was cooled to 0°C again, N,N-isopropylethylamine (8 ml) was added, and the reaction solution was further stirred at room temperature for 30 minutes.
  • the glass substrate coated with ITO Indium Tin Oxide
  • ITO Indium Tin Oxide
  • distilled water filtered secondarily by a filter of Millipore Co.
  • ultrasonic washing was repeated for 10 minutes by repeating it twice with distilled water.
  • ultrasonic cleaning was performed with a solvent of isopropyl alcohol, acetone, and methanol, dried, and then transported to a plasma cleaner. Further, the substrate was washed for 5 minutes using nitrogen plasma, and then transferred to a vacuum evaporator.
  • HAT-CN compound below was thermally vacuum-deposited to a thickness of 5 nm on the prepared ITO transparent electrode to form a hole injection layer. Subsequently, HTL1 was thermally vacuum-deposited to a thickness of 100 nm, and then HTL2 was thermally vacuum-deposited to a thickness of 10 nm to form a hole transport layer. Subsequently, as a host and a dopant, the compounds shown in Table 1 below were simultaneously vacuum-deposited in a weight ratio of 95:5 to form a 20 nm-thick light emitting layer. Subsequently, ETL was vacuum deposited to a thickness of 20 nm to form an electron transport layer.
  • LiF was vacuum deposited to a thickness of 0.5 nm to form an electron injection layer.
  • aluminum was deposited to a thickness of 100 nm to form a cathode to prepare an organic light emitting device.
  • the driving voltage, luminous efficiency, color coordinates, and lifetime measured at a current density of 10 mA/cm 2 of the organic light emitting devices manufactured in Examples 1 to 8 and Comparative Examples 1 to 7 are shown in Table 1 below.
  • the organic light emitting device was manufactured using the compound shown in Table 2 as a host and a dopant, 10 of the organic light emitting device prepared in Examples 9 to 14 and Comparative Examples 8 to 11 to a driving voltage, luminous efficiency, color coordinates and lifespan measured at a current density mA / cm 2 are shown in Table 2 below.
  • the organic light emitting devices of Examples 1 to 14 including the compound of Formula 1 and the compound of Formula 2, respectively, as the dopant and host of the light emitting layer include the compound of Formula 1 as a dopant, but the host
  • the organic light-emitting devices of Comparative Examples 1 to 4 and Comparative Example 8 containing the conventional anthracene derivative compound were superior in driving voltage, luminous efficiency, and/or life.
  • the organic light emitting device according to the present invention than the organic light emitting device of Comparative Examples 5 to 7 and Comparative Examples 9 to 11 containing a compound of Formula 2 as a host but not a compound of Formula 1 as a dopant is the driving voltage. , It can be confirmed that it is excellent in luminous efficiency and/or life.

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Abstract

La présente invention concerne un dispositif électroluminescent organique comprenant : une première électrode; une seconde électrode disposée pour faire face à la première électrode; et une ou plusieurs couches de matériau organique disposées entre la première électrode et la seconde électrode, une ou plusieurs couches des couches de matériau organique comprenant un composé représenté par la formule chimique 1 et un composé représenté par la formule chimique 2.
PCT/KR2020/000799 2019-01-18 2020-01-16 Dispositif électroluminescent organique WO2020149663A1 (fr)

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WO2018110497A1 (fr) * 2016-12-16 2018-06-21 学校法人関西学院 Composé amino aromatique polycyclique
WO2018150832A1 (fr) * 2017-02-16 2018-08-23 学校法人関西学院 Élément électroluminescent organique
WO2018186374A1 (fr) * 2017-04-03 2018-10-11 出光興産株式会社 Élément électroluminescent organique et dispositif électronique
WO2018186404A1 (fr) * 2017-04-03 2018-10-11 出光興産株式会社 Élément électroluminescent organique et dispositif électronique
KR20180134850A (ko) * 2016-04-26 2018-12-19 가꼬우 호징 관세이 가쿠잉 유기 전계 발광 소자

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TWI688137B (zh) * 2015-03-24 2020-03-11 學校法人關西學院 有機電場發光元件、顯示裝置以及照明裝置
WO2018128470A1 (fr) * 2017-01-05 2018-07-12 머티어리얼사이언스 주식회사 Élément électroluminescent organique
KR102633060B1 (ko) * 2017-06-30 2024-02-02 가꼬우 호징 관세이 가쿠잉 유기 전계 발광 소자

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WO2018110497A1 (fr) * 2016-12-16 2018-06-21 学校法人関西学院 Composé amino aromatique polycyclique
WO2018150832A1 (fr) * 2017-02-16 2018-08-23 学校法人関西学院 Élément électroluminescent organique
WO2018186374A1 (fr) * 2017-04-03 2018-10-11 出光興産株式会社 Élément électroluminescent organique et dispositif électronique
WO2018186404A1 (fr) * 2017-04-03 2018-10-11 出光興産株式会社 Élément électroluminescent organique et dispositif électronique

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