WO2013027902A1 - Composé destiné à un dispositif optoélectrique organique, élément électroluminescent organique le comprenant, et dispositif d'affichage comprenant l'élément électroluminescent organique - Google Patents

Composé destiné à un dispositif optoélectrique organique, élément électroluminescent organique le comprenant, et dispositif d'affichage comprenant l'élément électroluminescent organique Download PDF

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WO2013027902A1
WO2013027902A1 PCT/KR2012/000392 KR2012000392W WO2013027902A1 WO 2013027902 A1 WO2013027902 A1 WO 2013027902A1 KR 2012000392 W KR2012000392 W KR 2012000392W WO 2013027902 A1 WO2013027902 A1 WO 2013027902A1
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이호재
박무진
유은선
채미영
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제일모직 주식회사
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Priority to CN201280033445.9A priority Critical patent/CN103649268A/zh
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    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
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    • H05B33/00—Electroluminescent light sources
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    • H05B33/20—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded
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    • 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
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    • 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
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    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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    • C09K2211/1018—Heterocyclic compounds
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    • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
    • C09K2211/10—Non-macromolecular compounds
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    • C09K2211/1025—Heterocyclic compounds characterised by ligands
    • C09K2211/1092—Heterocyclic compounds characterised by ligands containing sulfur as the only heteroatom
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Definitions

  • the present invention relates to a compound for an organic optoelectronic device capable of providing an organic optoelectronic device having excellent life, efficiency, electrochemical stability, and thermal stability, an organic light emitting device including the same, and a display device including the organic light emitting device.
  • An organic optoelectric device refers to a device requiring charge exchange between an electrode and an organic material using holes or electrons.
  • Organic optoelectronic devices can be divided into two types according to the operation principle.
  • excitons are formed in the organic material layer by photons introduced into the device from an external light source, and the excitons are separated into electrons and holes, and these electrons and holes are transferred to different electrodes to be used as current sources (voltage sources). It is an electronic device of the form.
  • the second is an electronic device in which holes or electrons are injected into an organic semiconductor forming an interface with the electrodes by applying voltage or current to two or more electrodes, and operated by the injected electrons and holes.
  • Examples of an organic optoelectronic device include an organic photoelectric device, an organic light emitting device, an organic solar cell, an organic photo conductor drum, and an organic transistor, all of which are used to inject or transport holes or electrons to drive the device. Injection or transport materials, or luminescent materials.
  • organic light emitting diodes are attracting attention as the demand for flat panel displays increases.
  • organic light emitting phenomenon refers to a phenomenon of converting electrical energy into light energy using an organic material.
  • Such an organic light emitting device converts electrical energy into light by applying a current to an organic light emitting material, and has a structure in which a functional organic material layer is inserted between an anode and a cathode.
  • the organic material layer is often made of a multi-layered structure composed of different materials to increase the efficiency and stability of the organic light emitting device, for example, it may be made of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer.
  • the material used as the organic material layer in the organic light emitting device may be classified into a light emitting material and a charge transport material, such as a hole injection material, a hole transport material, an electron transport material, an electron injection material, and the like according to a function.
  • a charge transport material such as a hole injection material, a hole transport material, an electron transport material, an electron injection material, and the like according to a function.
  • the light emitting materials may be classified into blue, green, and red light emitting materials and yellow and orange light emitting materials required to realize better natural colors according to light emission colors.
  • the maximum emission wavelength is shifted to a long wavelength due to the intermolecular interaction, and the color purity decreases or the efficiency of the device decreases due to the emission attenuation effect.
  • the host / dopant system can be used as a light emitting material.
  • materials constituting the organic material layer in the device such as a hole injection material, a hole transport material, a light emitting material, an electron transport material, an electron injection material, a host and / or a dopant in the light emitting material, etc.
  • a hole injection material such as a hole injection material, a hole transport material, a light emitting material, an electron transport material, an electron injection material, a host and / or a dopant in the light emitting material, etc.
  • a hole injection material such as a hole transport material, a light emitting material, an electron transport material, an electron injection material, a host and / or a dopant in the light emitting material, etc.
  • This stable and efficient material should be preceded, and development of a stable and efficient organic material layer for an organic light emitting device has not been made yet, and therefore, development of new materials is continuously required.
  • the necessity of such a material development is the same in the other organic optoelectronic devices described above.
  • the low molecular weight organic light emitting diode is manufactured in the form of a thin film by vacuum evaporation method, so the efficiency and lifespan performance is good, and the high molecular weight organic light emitting diode using the inkjet or spin coating method has low initial investment cost. Large area has an advantage.
  • Both low molecular weight organic light emitting diodes and high molecular weight organic light emitting diodes are attracting attention as next-generation displays because they have advantages such as self-luminous, high-speed response, wide viewing angle, ultra-thin, high definition, durability, and wide driving temperature range.
  • advantages such as self-luminous, high-speed response, wide viewing angle, ultra-thin, high definition, durability, and wide driving temperature range.
  • LCD liquid crystal display
  • the response speed is 1000 times faster than the LCD in microseconds, it is possible to implement a perfect video without afterimages. Therefore, it is expected to be spotlighted as the most suitable display in line with the recent multimedia era.
  • the luminous efficiency In order to increase the size, the luminous efficiency must be increased and the life of the device must be accompanied. In this case, the light emitting efficiency of the device should be smoothly coupled to the holes and electrons in the light emitting layer.
  • the electron mobility of the organic material is generally slower than the hole mobility, in order to efficiently combine holes and electrons in the light emitting layer, an efficient electron transport layer is used to increase the electron injection and mobility from the cathode, It should be able to block the movement of holes.
  • a compound for an organic optoelectronic device which can play a role of hole injection and transport or electron injection and transport, and can act as a light emitting host with an appropriate dopant.
  • An organic light emitting diode having excellent lifespan, efficiency, driving voltage, electrochemical stability, and thermal stability and a display device including the same are provided.
  • At least one of X 1 to X 5 is N
  • L 1 to L 3 are the same or different from each other, and independently a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted A C2 to C6 alkynyl group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n, m and o are the same as or different from each other, and independently 0
  • Ar 1 and Ar 2 are the same as or different from each other, and independently have a hole property, a substituted or unsubstituted C3 to C30 heteroaryl group hole having a substituted or unsubstituted C6 to C30 aryl group hole A substituted or unsubstituted arylamine group having a property or a combination thereof
  • p is 0 or 1
  • the compound for an organic optoelectronic device may be represented by the following formula (2).
  • At least one of X 1 to X 5 is N
  • L 1 and L 2 are the same or different from each other, and independently a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted A C2 to C6 alkynyl group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n and m are the same as or different from each other, and independently 0 or 1
  • Ar 1 is a substituted or unsubstituted arylamine group having a hole property, or a substituted or unsubstituted C3 to C30 heteroaryl group having hole properties, or a substituted or unsubstituted C6 to C30 aryl group hole property.
  • R 1 to R 3 are the same or different, independently represent hydrogen, deuterium, substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 hetero aryl group, or a combination thereof.
  • the compound for an organic optoelectronic device may be represented by the following formula (3).
  • At least one of X 1 to X 5 is N
  • L 1 is a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted C2 to C6 alkynyl group, a substituted or unsubstituted A C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n is 0 or 1
  • Ar 1 has a hole property, a substituted or unsubstituted C3 to C30 heteroaryl group
  • R 1 to R 6 are the same as or different from each other, and independently hydrogen, deuterium , A substituted or unsubstituted C1 to C20 alkyl group, a substituted or un
  • the compound for an organic optoelectronic device may be represented by the following formula (4).
  • At least one of X 1 to X 5 is N
  • L 1 is a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted C2 to C6 alkynyl group, a substituted or unsubstituted A C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n is 0 or 1
  • Ar 1 has a hole property, a substituted or unsubstituted C3 to C30 heteroaryl group
  • R 1 to R 6 are the same as or different from each other, and independently hydrogen, deuterium , A substituted or unsubstituted C1 to C20 alkyl group, a substituted or un
  • the compound for an organic optoelectronic device may be represented by the following formula (5).
  • At least one of X 1 to X 5 is N
  • L 1 is a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted C2 to C6 alkynyl group, a substituted or unsubstituted A C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n is 0 or 1
  • Ar 1 has a hole property, a substituted or unsubstituted C3 to C30 heteroaryl group
  • R 1 to R 6 are the same as or different from each other, and independently hydrogen, deuterium , A substituted or unsubstituted C1 to C20 alkyl group, a substituted or un
  • N may be 0.
  • N may be one.
  • the substituted or unsubstituted C3 to C30 heteroaryl group having the above hole characteristics may be substituted or unsubstituted carbazolyl derivatives, substituted or unsubstituted dibenzofuranyl derivatives, substituted or unsubstituted dibenzothiophenyl derivatives, or It may be a combination thereof.
  • the substituted or unsubstituted C6 to C30 aryl group having the above hole characteristics may be a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted spiro-fluorenyl group, or a combination thereof.
  • the substituted or unsubstituted arylamine group having the above hole characteristics includes one or a plurality of aryl groups, and the one or a plurality of aryl groups are the same as or different from each other, and are independently substituted or unsubstituted phenyl groups, substituted or unsubstituted.
  • Substituted naphthyl group substituted or unsubstituted anthracenyl group, substituted or unsubstituted phenanthryl group, substituted or unsubstituted naphthacenyl group, substituted or unsubstituted pyrenyl group, substituted or unsubstituted biphenylyl group, substituted or Unsubstituted p-terphenyl group, substituted or unsubstituted m-terphenyl group, substituted or unsubstituted chrysenyl group, substituted or unsubstituted triphenylenyl group, substituted or unsubstituted perylenyl group, substituted or unsubstituted Indenyl groups, substituted or unsubstituted furanyl groups, substituted or unsubstituted thiophenyl groups, substituted or unsubstituted pyrrolyl groups, substituted or unsubstituted
  • Substituted or unsubstituted indolyl group substituted or unsubstituted quinolinyl group, substituted or unsubstituted isoquinolinyl group, substituted or unsubstituted quinazolinyl group, substituted or unsubstituted quinoxalinyl group, substituted or unsubstituted Naphthyridinyl groups, substituted or unsubstituted benzoxazinyl groups, substituted or unsubstituted benzthiazinyl groups, substituted or unsubstituted acridinyl groups, substituted or unsubstituted phenazineyl groups, substituted or unsubstituted phenothiazines It may be a diary, a substituted or unsubstituted phenoxazineyl group or a combination thereof.
  • the compound for an organic optoelectronic device may be represented by any one of Formulas A1 to A36.
  • the compound for an organic optoelectronic device may be represented by any one of Formulas B1 to B36.
  • the compound for an organic optoelectronic device may have a triplet excitation energy (T1) of 2.0 eV or more.
  • the organic optoelectronic device may be selected from the group consisting of an organic photoelectric device, an organic light emitting device, an organic solar cell, an organic transistor, an organic photosensitive drum, and an organic memory device.
  • the organic light emitting device comprising an anode, a cathode and at least one organic thin film layer interposed between the anode and the cathode
  • at least one of the organic thin film layer is the above-described organic optoelectronic device It provides an organic light emitting device comprising a compound for.
  • the organic thin film layer may be selected from the group consisting of a light emitting layer, a hole transport layer, a hole injection layer, an electron transport layer, an electron injection layer, a hole blocking layer and a combination thereof.
  • the compound for an organic optoelectronic device may be included in a hole transport layer or a hole injection layer.
  • the compound for an organic optoelectronic device may be included in a light emitting layer.
  • the compound for an organic optoelectronic device may be used as a phosphorescent or fluorescent host material in the light emitting layer.
  • a display device including the organic light emitting diode described above is provided.
  • Such a compound can be used as a hole injection / transport material, a host material, or an electron injection / transport material for the light emitting layer.
  • the organic optoelectronic device using the same has excellent electrochemical and thermal stability, and has excellent life characteristics, and may have high luminous efficiency even at a low driving voltage.
  • 1 to 5 are cross-sectional views illustrating various embodiments of an organic light emitting device that may be manufactured using a compound for an organic optoelectronic device according to an embodiment of the present invention.
  • hole injection layer 230 light emitting layer + electron transport layer
  • C1 to C30 alkyl group C1 to C10 alkylsilyl group, C3 to C30 cycloalkyl group, C6 to C30 aryl group, C1 to C10 alkoxy group, fluoro group, trifluoro It means substituted by C1-C10 trifluoroalkyl groups, such as a romoxy group, or a cyano group.
  • hetero means containing 1 to 3 hetero atoms selected from the group consisting of N, O, S, and P in one functional group, and the remainder is carbon.
  • an "alkyl group” means an aliphatic hydrocarbon group.
  • the alkyl group may be a "saturated alkyl group” meaning that it does not contain any alkenes or alkyne groups.
  • Alkene group means a functional group consisting of at least two carbon atoms with at least one carbon-carbon double bond
  • an "alkyne group” means at least two carbon atoms with at least one carbon-carbon triple bond It means functional groups made.
  • the alkyl group, whether saturated or unsaturated, may be branched, straight chain or cyclic.
  • the alkyl group may be an alkyl group that is C1 to C20.
  • the alkyl group may be a medium sized alkyl group which is C1 to C10.
  • the alkyl group may be a lower alkyl group which is C1 to C6.
  • a C1 to C4 alkyl group has 1 to 4 carbon atoms in the alkyl chain, i.e., the alkyl chain is methyl, ethyl, propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl and t-butyl Selected from the group consisting of:
  • Typical alkyl groups include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, t-butyl, pentyl, hexyl, ethenyl, propenyl, butenyl, cyclopropyl, cyclobutyl and cyclo It means a functional group which may be substituted with one or more groups individually and independently selected from pentyl group, cyclohexyl group and the like.
  • Aromatic group means a functional group in which all elements of the functional group in the ring form have p-orbitals and form these p-orbital conjugations. Specific examples include an aryl group and a heteroaryl group.
  • aryl group includes a monocyclic or fused ring polycyclic (ie, a ring that divides adjacent pairs of carbon atoms) functional groups.
  • Heteroaryl group means containing 1 to 3 hetero atoms selected from the group consisting of N, O, S and P in the aryl group, and the rest are carbon.
  • Spiro structure means a ring structure having one carbon as a contact point.
  • the spiro structure may also be used as a compound containing a spiro structure or a substituent including a spiro structure.
  • the compound for an organic optoelectronic device has a structure in which a substituent having hole characteristics is bonded to a core including a pyridine and a heteroaryl group including a plurality of substituted or unsubstituted phenylene groups.
  • the compound may satisfy the conditions required for the light emitting layer by selectively reinforcing hole characteristics in the core structure having excellent electronic characteristics. More specifically, it can be used as a host material of the light emitting layer.
  • the compound for an organic optoelectronic device may be a compound having various energy band gaps by introducing a variety of other substituents to the substituents substituted in the core portion and the core portion.
  • the compound may be used as an electron injection layer and a transfer layer or a hole injection layer and a transfer layer.
  • the electron transport ability is enhanced to have an excellent effect in terms of efficiency and driving voltage, and excellent life time when driving the organic photoelectric device due to excellent electrochemical and thermal stability. Properties can be improved.
  • a compound for an organic optoelectronic device represented by Formula 1 is provided.
  • At least one of X 1 to X 5 is N
  • L 1 to L 3 are the same or different from each other, and independently a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted A C2 to C6 alkynyl group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n, m and o are the same as or different from each other, and independently 0
  • Ar 1 and Ar 2 are the same as or different from each other, and independently have a hole property, a substituted or unsubstituted C3 to C30 heteroaryl group hole having a substituted or unsubstituted C6 to C30 aryl group hole A substituted or unsubstituted arylamine group having a property or a combination thereof
  • p is 0 or 1
  • the hole characteristic means a characteristic that has conductivity characteristics along the HOMO level to facilitate the injection and movement of the holes formed in the anode into the light emitting layer.
  • the electronic characteristic means a characteristic that has conductivity characteristics along the LUMO level to facilitate injection of electrons formed at the cathode into the light emitting layer and movement in the light emitting layer.
  • the compound for an organic optoelectronic device may be represented by the following formula (2).
  • At least one of X 1 to X 5 is N
  • L 1 and L 2 are the same or different from each other, and independently a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted A C2 to C6 alkynyl group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n and m are the same as or different from each other, and independently 0 or 1
  • Ar 1 is a substituted or unsubstituted arylamine group having a hole property, or a substituted or unsubstituted C3 to C30 heteroaryl group having hole properties, or a substituted or unsubstituted C6 to C30 aryl group hole property.
  • R 1 to R 3 are the same or different, independently represent hydrogen, deuterium, substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 hetero aryl group, or a combination thereof.
  • the compound represented by Chemical Formula 2 is a structure in which the number of substituents having hole characteristics is smaller than that of the compound represented by Chemical Formula 1.
  • the number of substituents having the above hole characteristics can be appropriately adjusted depending on the effect of the desired compound.
  • L 1 to L 3 are more specifically the same or above and independently substituted or unsubstituted ethenylene, substituted or unsubstituted ethynylene, substituted or unsubstituted phenylene, substituted or unsubstituted biphenylene, Substituted or unsubstituted naphthalene, substituted or unsubstituted pyridinylene, substituted or unsubstituted pyrimidinylene, substituted or unsubstituted triazinylene, and the like.
  • the substituents have a pi bond
  • the substituents can be applied to the light emitting layer of the organic photoelectric device as a phosphorescent host by increasing the triplet energy band gap by controlling the pi conjugate length ( ⁇ -conjugation length) of the whole compound. Can play a role.
  • n, m or o may be independently of each other, there may not be a linking group such as L 1 to L 3 .
  • L 1 to L 3 may be more specifically substituted or unsubstituted carbazolyl derivatives, substituted or unsubstituted dibenzothiophenyl derivatives, substituted or unsubstituted dibenzofuranyl derivatives, and the like.
  • the linking group since the linking group itself has a hole property, the hole property of the entire compound may be further enhanced.
  • the compound for an organic optoelectronic device may be represented by any one of the following Formulas 3 to 5.
  • At least one of X 1 to X 5 is N
  • L 1 is a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted C2 to C6 alkynyl group, a substituted or unsubstituted A C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n is 0 or 1
  • Ar 1 has a hole property, a substituted or unsubstituted C3 to C30 heteroaryl group
  • R 1 to R 6 are the same as or different from each other, and independently hydrogen, deuterium , A substituted or unsubstituted C1 to C20 alkyl group, a substituted or un
  • At least one of X 1 to X 5 is N
  • L 1 is a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted C2 to C6 alkynyl group, a substituted or unsubstituted A C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n is 0 or 1
  • Ar 1 has a hole property, a substituted or unsubstituted C3 to C30 heteroaryl group
  • R 1 to R 6 are the same as or different from each other, and independently hydrogen, deuterium , A substituted or unsubstituted C1 to C20 alkyl group, a substituted or un
  • At least one of X 1 to X 5 is N
  • L 1 is a single bond, a substituted or unsubstituted C2 to C6 alkenyl group, a substituted or unsubstituted C2 to C6 alkynyl group, a substituted or unsubstituted A C6 to C30 arylene group, a substituted or unsubstituted C3 to C30 heteroarylene group, or a combination thereof
  • n is 0 or 1
  • Ar 1 has a hole property, a substituted or unsubstituted C3 to C30 heteroaryl group
  • R 1 to R 6 are the same as or different from each other, and independently hydrogen, deuterium , A substituted or unsubstituted C1 to C20 alkyl group, a substituted or un
  • n may be 0.
  • heteromolecules may be gathered in the structural aspect of the compound represented by one of Formulas 1 to 5, and thus the electronic properties of the compound may be improved.
  • n may be 1.
  • stability of the compound represented by any one of Formulas 1 to 5 may be increased.
  • the substituted or unsubstituted C3 to C30 heteroaryl group having the above hole characteristics may be substituted or unsubstituted carbazolyl derivatives, substituted or unsubstituted dibenzofuranyl derivatives, substituted or unsubstituted dibenzothiophenyl derivatives, or It may be a combination thereof.
  • the carbazolyl derivative is a concept including a substituent in which two or more substituents bonded to a carbazolyl group are fused to form a fused ring. The same may be applied to the dibenzofuranyl derivative and the dibenzothiophenyl derivative.
  • the bi-polar characteristics of the entire compound may be improved.
  • the substituted or unsubstituted C6 to C30 aryl group having the above hole characteristics may be a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted spiro-fluorenyl group, or a combination thereof.
  • the substituted or unsubstituted arylamine group having the above hole characteristics includes one or a plurality of aryl groups, and the one or a plurality of aryl groups are the same as or different from each other, and are independently substituted or unsubstituted phenyl groups, substituted or unsubstituted.
  • Substituted naphthyl group substituted or unsubstituted anthracenyl group, substituted or unsubstituted phenanthryl group, substituted or unsubstituted naphthacenyl group, substituted or unsubstituted pyrenyl group, substituted or unsubstituted biphenylyl group, substituted or Unsubstituted p-terphenyl group, substituted or unsubstituted m-terphenyl group, substituted or unsubstituted chrysenyl group, substituted or unsubstituted triphenylenyl group, substituted or unsubstituted perrylenyl group, substituted or unsubstituted Indenyl groups, substituted or unsubstituted furanyl groups, substituted or unsubstituted thiophenyl groups, substituted or unsubstituted pyrrolyl groups, substituted or unsubstituted
  • Substituted or unsubstituted indolyl group substituted or unsubstituted quinolinyl group, substituted or unsubstituted isoquinolinyl group, substituted or unsubstituted quinazolinyl group, substituted or unsubstituted quinoxalinyl group, substituted or unsubstituted Naphthyridinyl groups, substituted or unsubstituted benzoxazinyl groups, substituted or unsubstituted benzthiazinyl groups, substituted or unsubstituted acridinyl groups, substituted or unsubstituted phenazineyl groups, substituted or unsubstituted phenothiazines It may be a diary, a substituted or unsubstituted phenoxazineyl group or a combination thereof. Such arylamine groups have very good hole characteristics.
  • the energy bandgap of the compound can be controlled by controlling the substituents.
  • a compound having properties suitable for the light emitting layer of the organic light emitting device can be prepared.
  • a suitable combination of substituents can be prepared a structure of asymmetric bipolar (bipolar) characteristics, the structure of the asymmetric bipolar characteristics can be expected to improve the luminous efficiency and performance of the device by improving the major and electron transfer ability.
  • the structure of the compound can be prepared in bulk by the control of the substituents, thereby lowering the crystallinity. If the crystallinity of the compound is lowered, the lifetime of the device may be longer.
  • the compound for an organic optoelectronic device may be represented by the formula A1 to A36.
  • the present invention is not limited to the following compounds.
  • the compound for an organic optoelectronic device may be represented by any one of the formulas B1 to B36.
  • the present invention is not limited to the following compounds.
  • the compound for an organic optoelectronic device including the compound as described above has a glass transition temperature of 110 ° C. or higher, and a thermal decomposition temperature of 400 ° C. or higher, thereby providing excellent thermal stability. This enables the implementation of high efficiency organic optoelectronic devices.
  • the compound for an organic optoelectronic device including the compound as described above may serve as light emission, electron injection and / or transport, and may also serve as a light emitting host with an appropriate dopant. That is, the compound for an organic optoelectronic device may be used as a host material of phosphorescence or fluorescence, a blue dopant material, or an electron transport material.
  • Compound for an organic optoelectronic device according to an embodiment of the present invention is used in the organic thin film layer to improve the life characteristics, efficiency characteristics, electrochemical stability and thermal stability of the organic optoelectronic device, it is possible to lower the driving voltage.
  • one embodiment of the present invention provides an organic optoelectronic device comprising the compound for an organic optoelectronic device.
  • the organic optoelectronic device refers to an organic photoelectric device, an organic light emitting device, an organic solar cell, an organic transistor, an organic photosensitive drum, an organic memory device, and the like.
  • a compound for an organic optoelectronic device according to an embodiment of the present invention is included in an electrode or an electrode buffer layer to increase quantum efficiency, and in the case of an organic transistor, a gate, a source-drain electrode, or the like may be used as an electrode material. Can be used.
  • Another embodiment of the present invention is an organic light emitting device comprising an anode, a cathode and at least one organic thin film layer interposed between the anode and the cathode, at least any one of the organic thin film layer is an embodiment of the present invention It provides an organic light emitting device comprising a compound for an organic optoelectronic device according to.
  • the organic thin film layer which may include the compound for an organic optoelectronic device may include a layer selected from the group consisting of a light emitting layer, a hole transport layer, a hole injection layer, an electron transport layer, an electron injection layer, a hole blocking layer and a combination thereof. At least one of the layers includes the compound for an organic optoelectronic device according to the present invention.
  • the electron transport layer or the electron injection layer may include a compound for an organic optoelectronic device according to an embodiment of the present invention.
  • the compound for an organic optoelectronic device when included in a light emitting layer, the compound for an organic optoelectronic device may be included as a phosphorescent or fluorescent host, and in particular, may be included as a fluorescent blue dopant material.
  • FIG. 1 to 5 are cross-sectional views of an organic light emitting device including a compound for an organic optoelectronic device according to an embodiment of the present invention.
  • the organic light emitting diodes 100, 200, 300, 400, and 500 according to the embodiment of the present invention are interposed between the anode 120, the cathode 110, and the anode and the cathode. It has a structure including at least one organic thin film layer 105.
  • the anode 120 includes a cathode material, and a material having a large work function is preferable as the anode material so that hole injection can be smoothly injected into the organic thin film layer.
  • the positive electrode material include metals such as nickel, platinum, vanadium, chromium, copper, zinc, and gold or alloys thereof, and include zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO).
  • metal oxides such as ZnO and Al, or combinations of metals and oxides such as SnO 2 and Sb, and poly (3-methylthiophene), poly [3,4- (ethylene-1, 2-dioxy) thiophene] (conductive polymers such as polyehtylenedioxythiophene (PEDT), polypyrrole and polyaniline, etc.), but is not limited thereto.
  • a transparent electrode including indium tin oxide (ITO) may be used as the anode.
  • the negative electrode 110 includes a negative electrode material, and the negative electrode material is preferably a material having a small work function to facilitate electron injection into the organic thin film layer.
  • the negative electrode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, lead, cesium, barium, or alloys thereof, and LiF / Al.
  • Multilayer structure materials such as LiO 2 / Al, LiF / Ca, LiF / Al, and BaF 2 / Ca, and the like, but are not limited thereto.
  • a metal electrode such as aluminum may be used as the cathode.
  • FIG. 1 illustrates an organic photoelectric device 100 in which only a light emitting layer 130 exists as an organic thin film layer 105.
  • the organic thin film layer 105 may exist only as a light emitting layer 130.
  • FIG. 2 illustrates a two-layered organic light emitting diode 200 including an emission layer 230 and an hole transport layer 140 including an electron transport layer as the organic thin film layer 105, as shown in FIG. 2.
  • the organic thin film layer 105 may be a two-layer type including the light emitting layer 230 and the hole transport layer 140.
  • the light emitting layer 130 functions as an electron transporting layer
  • the hole transporting layer 140 functions to improve bonding and hole transporting properties with a transparent electrode such as ITO.
  • FIG. 3 is a three-layered organic light emitting device 300 having an electron transport layer 150, an emission layer 130, and a hole transport layer 140 as an organic thin film layer 105, and the organic thin film layer 105.
  • the light emitting layer 130 is in an independent form, and has a form in which a film (electron transport layer 150 and hole transport layer 140) having excellent electron transport properties or hole transport properties is stacked in separate layers.
  • FIG. 4 illustrates a four-layered organic light emitting diode 400 in which an electron injection layer 160, an emission layer 130, a hole transport layer 140, and a hole injection layer 170 exist as an organic thin film layer 105.
  • the hole injection layer 170 may improve adhesion to ITO used as an anode.
  • FIG. 5 shows different functions such as the electron injection layer 160, the electron transport layer 150, the light emitting layer 130, the hole transport layer 140, and the hole injection layer 170 as the organic thin film layer 105.
  • the five-layer organic light emitting device 500 having five layers is present, and the organic light emitting device 500 is effective in lowering the voltage by separately forming the electron injection layer 160.
  • the electron transport layer 150, the electron injection layer 160, the light emitting layers 130 and 230, the hole transport layer 140, and the hole injection layer 170 forming the organic thin film layer 105 are provided.
  • Any one selected from the group consisting of a combination includes the compound for an organic optoelectronic device.
  • the compound for an organic optoelectronic device may be used in the electron transport layer 150 including the electron transport layer 150 or the electron injection layer 160, and in particular, when included in the electron transport layer, a hole blocking layer (not shown). Since it is not necessary to form separately, it is desirable to provide an organic light emitting device having a simplified structure.
  • the compound for an organic optoelectronic device when included in the light emitting layers 130 and 230, the compound for an organic optoelectronic device may be included as a phosphorescent or fluorescent host, or may be included as a fluorescent blue dopant.
  • the organic light emitting device described above may be formed by forming an anode on a substrate, followed by a dry film forming method such as evaporation, sputtering, plasma plating, and ion plating, or spin coating or dipping. After forming the organic thin film layer by a wet film method such as a flow coating method (flow coating), it can be prepared by forming a cathode thereon.
  • a dry film forming method such as evaporation, sputtering, plasma plating, and ion plating, or spin coating or dipping.
  • a wet film method such as a flow coating method (flow coating)
  • it can be prepared by forming a cathode thereon.
  • a display device including the organic light emitting diode is provided.
  • reaction solution was added to 500 ml of methanol, and the crystallized solid was filtered, and then dissolved in monochlorobenzene to separate silica gel / celite. After removal of an appropriate amount of the organic solvent, compound B18.5 g (yield 76%) was obtained by recrystallization with methanol.
  • ITO (Indium tin oxide) 1500 thin film coated glass substrate was washed with distilled water ultrasonic. After washing the distilled water, ultrasonic cleaning with a solvent such as isopropyl alcohol, acetone, methanol and the like was dried and then transferred to a plasma cleaner, and then the substrate was cleaned for 5 minutes using an oxygen plasma, and then the substrate was transferred to a vacuum depositor.
  • a solvent such as isopropyl alcohol, acetone, methanol and the like
  • the substrate was cleaned for 5 minutes using an oxygen plasma, and then the substrate was transferred to a vacuum depositor.
  • the prepared ITO transparent electrode as an anode, the following HTM compound was vacuum deposited on the ITO substrate to form a hole injection layer having a thickness of 1200 ⁇ .
  • BAlq (Bis (2-methyl-8-quinolinolato-N1, O8)-(1,1'-Biphenyl-4-olato) aluminum] 50um and Alq3 [Tris (8-hydroxyquinolinato) aluminium] 250 ⁇ Laminated sequentially to form an electron transport layer.
  • An organic light emitting device was manufactured by sequentially depositing LiF 5 ′ and Al 1000 ′ on the electron transport layer to form a cathode.
  • Example 4 an organic light emitting diode was manufactured according to the same method as Example 4 except for using the compound according to Example 2 instead of the compound according to Example 1.
  • Example 4 an organic light emitting diode was manufactured according to the same method as Example 4 except for using the compound according to Example 3 instead of the compound according to Example 1.
  • Example 4 an organic light emitting diode was manufactured according to the same method as Example 4 except for using the compound represented by the following Formula R1 instead of the compound according to Example 1.
  • the current value flowing through the unit device was measured using a current-voltmeter (Keithley 2400) while increasing the voltage from 0 V to 10 V, and the measured current value was divided by the area to obtain a result.
  • the resulting organic light emitting device was measured using a luminance meter (Minolta Cs-1000A) while increasing the voltage from 0 V to 10 V to obtain a result.
  • the current efficiency (cd / A) of the same current density (10 mA / cm 2 ) was calculated using the brightness, current density, and voltage measured from (1) and (2) above.
  • Table 1 summarizes the device evaluation results.
  • Example 1 Classification Host Drive voltage (Vd, V) Luminous Efficiency (cd / A) Power efficiency (lm / W) Luminance (cd / m 2 ) Color coordinates CIEx Color coordinates Comparative Example 1 R1 7.0 49.32 22.13 3000 0.622 0.136 Example 4 A1 4.91 60.3 38.6 3000 0.339 0.623 Example 5 A2 5.02 55.4 34.7 3000 0.339 0.622 Example 6 B1 5.27 59.1 35.2 3000 0.335 0.624
  • the organic light emitting diode according to Examples 4 to 6 is advantageous in terms of efficiency and driving voltage of the device.

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Abstract

La présente invention concerne un composé destiné à un dispositif optoélectrique organique, un élément électroluminescent organique le comprenant, et un dispositif d'affichage comprenant l'élément électroluminescent organique. Selon l'invention, on obtient le composé représenté par la formule chimique 1 destiné à un dispositif optoélectrique organique, de sorte que l'on peut fabriquer un dispositif optoélectrique organique ayant une durée de vie supérieure du fait qu'il a une stabilité électrochimique et thermique supérieure et une efficacité lumineuse élevée même avec une tension d'attaque faible.
PCT/KR2012/000392 2011-08-19 2012-01-17 Composé destiné à un dispositif optoélectrique organique, élément électroluminescent organique le comprenant, et dispositif d'affichage comprenant l'élément électroluminescent organique WO2013027902A1 (fr)

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