WO2005092888A1 - ピリジル基で置換されたオキサジアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 - Google Patents
ピリジル基で置換されたオキサジアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 Download PDFInfo
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- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
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- C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
- C09K11/06—Luminescent materials, e.g. electroluminescent or chemiluminescent containing organic luminescent materials
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional [2D] radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional [2D] radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional [2D] radiating surfaces
- H05B33/22—Light sources with substantially two-dimensional [2D] radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
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- H—ELECTRICITY
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- 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
- H10K85/656—Aromatic compounds comprising a hetero atom comprising two or more different heteroatoms per ring
- H10K85/6565—Oxadiazole compounds
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1044—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms
- C09K2211/1048—Heterocyclic compounds characterised by ligands containing two nitrogen atoms as heteroatoms with oxygen
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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
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
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- 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]
- H10K50/18—Carrier blocking layers
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- 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
- H10K85/654—Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
Definitions
- the present invention relates to a compound and an element suitable for an organic electroluminescence (EL) element which is a self-luminous element suitable for various display devices. More specifically, the present invention relates to an oxaziazole ring structure in which a substituted pyridyl group is linked. And an organic EL device using the compound.
- EL organic electroluminescence
- organic EL devices are self-luminous devices, they are brighter and have better visibility than liquid crystal devices, and can display sharper images. Therefore, active research has been conducted.
- Patent Document 1 Japanese Patent Application Laid-Open No. 8-48686
- Patent Document 2 Patent No. 3194648
- Non-Patent Document 1 Proceedings of the 9th Workshop of the Japan Society of Applied Physics 55-61 Page (2001)
- Non-Patent Document 2 the use of triplet excitons has been attempted for the purpose of further improving luminous efficiency, and the use of phosphorescent emitters has been studied (for example, see Non-Patent Document 2).
- Non-Patent Document 2 Proceedings of the 9th Workshop of the Japan Society of Applied Physics 23-31 (1)
- the light-emitting layer can also be formed by doping a phosphor or phosphorescent substance into a charge-transporting compound generally called a host material.
- a host material a charge-transporting compound generally called a host material.
- a typical light-emitting material tri (8-hydroxyquinoline) aluminum (hereinafter abbreviated as A1Q), is also commonly used as an electron transport material, but it is said that the electron transfer speed is slow. Has been done.
- PBD 2- (4-biphenylyl) -1-5- (4-t-butylphenyl) -1,3,4-oxoxadiazole
- Non-Patent Document 3 Jpn.J.A.p.1.Phys., 27, L269 (1988)
- Patent Document 3 Patent No. 2 7 2 1 4 4 2
- Patent Document 4 Japanese Patent No. 331632
- Patent Document 5 Japanese Patent No. 34886694
- a hole blocking layer As a hole blocking material, triazole derivatives (for example, see Patent Document 6), bathocuproine (hereinafter abbreviated as BCP), and a mixed ligand complex of aluminum (BA1q) (for example, (See Patent Document 2).
- BCP bathocuproine
- BA1q mixed ligand complex of aluminum
- Patent Document 6 Patent No. 27343441
- the hole blocking material that is currently commonly used is BCP, but it cannot be said that it is a sufficiently stable material, so it cannot be said that it functions as a hole blocking layer sufficiently, and satisfactory device characteristics are obtained. Had not been obtained.
- An object of the present invention is to provide a material for an organic EL device with high efficiency and high durability, which has excellent characteristics of excellent electron injection / transport performance, hole blocking ability, and high stability in a thin film state.
- Another object of the present invention is to provide a highly efficient and highly durable organic EL device using the above compound.
- the physical properties of the organic compound suitable for the present invention include (1) good electron injectability, (2) high electron transfer speed, (3) excellent hole blocking ability, ( 4) The thin film state is stable.
- the physical characteristics of the device suitable for the present invention include (1) high luminous efficiency, (2) low luminescence starting voltage, (3) low practical driving voltage, and (4) maximum High light emission luminance can be given.
- the present inventors focused on the fact that the nitrogen atom of the pyridine ring, which has electron affinity, has the ability to coordinate to the metal.
- a novel organic compound linked to a single ring was designed and chemically synthesized, and various organic EL devices were prototyped using the compound, and as a result of intensive evaluation of device characteristics, the present invention was completed. I got it.
- Ar represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group
- R 2 , R 3 , 1 ⁇ 4 Oyobi 1 5 one of them is a linking group
- the other may hydrogen atom be the same or different, a fluorine atom, Shiano group, an alkyl group, a substituted or unsubstituted phenyl group, a substituted or Represents an unsubstituted naphthyl group, R 6 , R 7 , R 8 , R 9, and are two or more bonding groups, and the other may be the same or different, and may be a hydrogen atom or a fluorine atom.
- a cyano group, an alkyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, m represents an integer of 1 to 3, and n represents an integer of 0 to 4, where n 0.
- the four groups excluding the linking group from R 2 , R 3 , R 4 and R 5 are the same. Sometimes it is not a hydrogen atom.
- n 0, and one of the four groups excluding the bonding group from R_ 2 , R 3 , R 4 and 1 ⁇ 5 is a phenyl group
- the present invention also relates to an organic electroluminescent element having a pair of electrodes and at least one organic layer sandwiched between the pair of electrodes, wherein the compound is contained as a constituent material of at least one organic layer.
- Specific examples of the hydrocarbon group, the aromatic heterocyclic group or the condensed polycyclic aromatic group include Group, biphenyl group, evening phenyl group, tetrakisphenyl group, stilyl group, naphthyl group, anthryl group, acenaphthenyl group, fluorenyl group, phenanthryl group, indenyl group, pyrenyl group, pyridyl group, pyrimidyl group, Furanyl, pyronyl, thiopheny
- the group include a fluorine atom, a chlorine atom, a cyano group, a hydroxyl group, a nitro group, an alkyl group, an alkoxy group, an amino group, a substituted amino group, a trifluoromethyl group, a phenyl group, a tolyl group, Examples include a naphthyl group and an aralkyl group.
- substituted pyridyl group in the general formula (1) examples include a dipyridyl group, a pyridyl group, and a phenylpyridyl group.
- the compound having an oxadiazole ring structure represented by the general formula (1) of the present invention and having a substituted pyridyl group linked thereto has a higher electron transfer rate than conventional electron transporting materials and has an excellent hole blocking ability. And the thin film state is stable.
- the compound represented by the general formula (1) of the present invention and having an oxaziazole ring structure in which a substituted pyridyl group is linked can be used as a constituent material of an electron transport layer of an organic EL device.
- a material that has a higher electron injection and transfer speed than conventional materials the efficiency of electron transport from the electron transport layer to the light emitting layer is improved, and the luminous efficiency is improved, and the driving voltage is reduced.
- the organic EL element has an effect of improving the durability.
- the compound represented by the general formula (1) of the present invention and having an oxadiazole ring structure in which a substituted pyridyl group is linked can also be used as a constituent material of a hole blocking layer of an organic EL device.
- the compound represented by the general formula (1) of the present invention and having an oxaziazole ring structure in which a substituted pyridyl group is linked can also be used as a constituent material of a light emitting layer of an organic EL device.
- the material of the present invention which has better electron transportability than conventional materials and has a wide band gap, is used as a host material of a light emitting layer, and a phosphor or a phosphorescent material called a dopant is carried thereon to form a light emitting layer.
- the use of the organic EL device has an effect that a driving voltage is reduced and an organic EL element having improved luminous efficiency can be realized.
- the organic EL device of the present invention has an oxadiazole ring structure in which a substituted pyridyl group is linked, in which electron transfer is faster than conventional electron transport materials, has excellent hole blocking ability, and is stable in a thin film state.
- the use of a compound having the above properties makes it possible to achieve high efficiency and high durability.
- the present invention is a compound having an oxadiazole ring structure in which a substituted pyridyl group is linked, which is useful as a constituent material of an electron transport layer, a hole blocking layer, or a light emitting layer of an organic EL device.
- the fabricated organic EL device According to the present invention, the luminous efficiency and the durability of the conventional organic EL device can be remarkably improved.
- FIG. 1 is a diagram showing an EL element configuration of Example 19;
- FIG. 2 is a diagram showing a configuration of an EL device of Example 21.
- FIG. 3 is a diagram showing an EL element configuration of Example 22.
- FIG. 4 is a diagram showing a configuration of an EL device of Example 23.
- FIG. 5 is a graph comparing the voltage-Z current density characteristics of Example 19 and Comparative Example 1.
- FIG. 6 is a graph comparing the voltage / luminance characteristics of Example 19 and Comparative Example 1.
- FIG. 7 is a graph comparing the current density Z luminance characteristics of Example 19 and Comparative Example 1.
- FIG. 8 is a graph comparing the current density Z current efficiency between Example 19 and Comparative Example 1.
- FIG. 9 is a graph comparing the voltage / Z current density characteristics of Example 21 and Comparative Example 2.
- FIG. 10 is a graph comparing the voltage-Z luminance characteristics of Example 21 and Comparative Example 2.
- FIG. 11 is a graph comparing the current density Z luminance characteristics of Example 21 and Comparative Example 2.
- FIG. 12 is a graph comparing the current density / current efficiency between Example 21 and Comparative Example 2.
- the compound of the present invention having an oxaziazole ring structure to which a substituted pyridyl group is linked is a novel compound, and these compounds include, for example, 6- (2H-tetrazol-5-yl) -2,2 It can be synthesized by condensing, -bipyridine and the corresponding pyridine or phenylpyridine with various aromatic acid chlorides.
- the melting point and glass transition point were measured using a powder and a high-sensitivity differential scanning calorimeter DSC310S manufactured by Bruker AXS.
- the work function was measured by preparing a 100 nm thin film on an ITO substrate and using an atmospheric photoelectron spectrometer A C2 type manufactured by RIKEN KEIKI. Work function is an indicator of hole blocking ability.
- the structure of the organic EL device of the present invention includes an anode, a hole injecting layer, a hole transporting layer, a light emitting layer, a hole blocking layer, an electron transporting layer, and a cathode, which are sequentially formed on a substrate.
- an anode, a hole transport layer, a light emitting layer, an electron transport layer, and a cathode can be sequentially formed on a substrate.
- anode of the organic EL element an electrode material having a large work function such as ITO or gold is used.
- hole injection layer in addition to copper phthalocyanine (hereinafter abbreviated as CuPc), a material such as a star burst type triphenylamine derivative, a naphthaleneamine compound, or a coating type material can be used. .
- N, N'-diphenyl N, N'-di (m-tolyl) benzidine (hereinafter abbreviated as TPD) and N, N'-diphenyl N, N'-di (mononaphthyl) benzidine (hereinafter abbreviated as NPD), various triphenylamine tetramers and the like can be used.
- TPD N, N'-diphenyl N, N'-di (m-tolyl) benzidine
- NPD N, N'-diphenyl N, N'-di (mononaphthyl) benzidine
- various triphenylamine tetramers and the like can be used.
- a coating type polymer material such as PEDOT / PSS can be used as PEDOT / PSS.
- the light emitting layer, hole blocking layer, and electron transporting layer of the organic EL device of the present invention include compounds having an oxadiazole ring structure in which a substituted pyridyl group is linked, as well as aluminum complexes, oxazole derivatives, and phenol derivatives. And polydialkylfluorene derivatives.
- an organic EL device can be manufactured. Further, as a host material for the light emitting layer, for example, a phosphor such as quinacridone, coumarin, or rubrene, or a dopant such as a phosphorescent emitter such as an iridium complex of phenylpyridine is added. Also, a high-performance organic EL device can be manufactured.
- an oxaziazole ring structure in which a substituted pyridyl group is linked A conventional electron transporting material can be used as an electron transporting layer by layering or co-evaporating a conventional electron transporting material on the compound.
- the organic EL device of the present invention may have an electron injection layer.
- the electron injection layer lithium fluoride or the like can be used.
- the cathode an electrode material having a low work function, such as aluminum, or an alloy having a lower work function, such as aluminum magnesium, is used. Examples>
- Example 1
- Phpy OXDm 2- (2-phenylvinylidine-1-6-yl) -11,3,4-oxaziazol-l-5-yl] benzene
- Phpy O XD (Abbreviated as BP) (synthesis of (1 2)
- the melting point and glass transition point of the compound of the present invention were determined by a high-sensitivity differential scanning calorimeter (DSC3100S, manufactured by Bruker AXS).
- the compound of the present invention has a high glass transition point and a stable thin film state Example 18
- a vapor-deposited film having a thickness of 100 nm was formed on an ITO substrate, and the work function was measured with an atmospheric photoelectron spectrometer (AC2, manufactured by Riken Keiki). All the compounds of the present invention exceeded the measurement limit of 6.2 eV of the measurement device.
- the compound of the present invention has a clearly deeper work function than the hole transporting material, and has a large hole blocking ability.
- the organic EL device has a hole transport layer 4, a light emitting layer 5, an electron transport layer 7, a cathode ( (Aluminum magnesium electrode) It was prepared by vapor deposition in the order of 9.
- the glass substrate 1 on which a 150 nm-thick ITO film was formed was washed with an organic solvent, and then the surface was washed by oxygen plasma treatment. This was mounted in a vacuum evaporation machine, and the pressure was reduced to 0.001 Pa or less.
- TPD hole transport layer 4 at a deposition rate of 6 nmZmin.
- A1q was formed as the light-emitting layer 5 at a deposition rate of 6 nmXmin.
- B py O XDm (2) of the present invention was formed as an electron transport layer 7 at a deposition rate of 6 nm / min. All the vapor depositions so far were continuously performed without breaking the vacuum.
- a cathode vapor deposition mask was inserted, and a Mg 9 Ag alloy was vapor-deposited at a ratio of 10: 1 to about 200 nm to form a cathode 9.
- the fabricated device was stored overnight in a vacuum desiccator, and its characteristics were measured at room temperature in the air.
- the characteristics of the organic EL device of the present invention thus formed are obtained by applying an applied voltage of 100 cd dZm 2 and applying a current of 20 OmA / cm 2. And the luminous efficiency defined by luminous luminance / voltage.
- an organic EL device was produced under the same conditions as in Example 19 except that the material of the electron transport layer 7 was changed from B py OXDm (2) to B py OXD P y (4).
- the characteristics were investigated. At 4.0 V, light emission of 100 cc dZm 2 was observed. At 8.5 V, a current of 200 mA / cm 2 flowed, and stable green luminescence of 1150 cc dZm 2 was obtained. The luminous efficiency at this luminance was as high as 5.8 cdZA. Comparative Example 1
- an organic EL device was manufactured under the same conditions as in Example 19 except that the material of the electron transport layer 7 was changed to A1q, and the characteristics were examined. That is, Alq 3 was formed as a light emitting layer and an electron transporting layer 5 and 7 at a deposition rate of 6 nm / min to about 50 nm. A light emission of 100 cd / m 2 was observed from 7.2 V, and a current of 200 mA / cm 2 flowed at 13.3 V, and a green light emission of 960 cd / m 2 was obtained. Was. The luminous efficiency at this luminance was 4.6 cd / A.
- the organic EL device of the present invention is superior in luminous efficiency to the device using A1q used as a general electron transporting material, and furthermore has a remarkable reduction in driving voltage. Because it can be achieved, it turned out to be excellent in durability.
- An organic EL device as shown in FIG. 2 was prepared by forming an ITO electrode as a transparent anode 2 on a glass substrate 1 in advance, followed by a hole transport layer 4, a light emitting layer 5, a hole blocking layer 6, The electron transport layer 7 and the cathode (aluminum magnesium electrode) 9 were deposited in this order.
- the glass substrate 1 on which a 150 nm-thick ITO film was formed was washed with an organic solvent, and then the surface was washed by oxygen plasma treatment. This was mounted in a vacuum evaporation machine and the pressure was reduced to 0.001 Pa or less.
- about 50 nm of TPD was formed as a hole transport layer 4 at a deposition rate of 6 nmZmin.
- a 1 q was deposited as the light emitting layer 5 at a deposition rate of 6 nm / m
- B py ⁇ XDm (2) of the present invention was formed as a hole blocking layer 6 to a thickness of about 20 nm at a deposition rate of 6 nm / min. Further, about 20 nm of A1q was formed as an electron transporting layer 7 'at a deposition rate of 6 nmZmin. All of the depositions so far were performed continuously without breaking vacuum. Finally, the cathode 9 was formed by inserting a mask for cathodic vapor deposition and vapor-depositing an MgAg alloy at a ratio of 10: 1 to about 200 nm. The fabricated device was stored overnight in a vacuum desiccator, and its characteristics were measured at room temperature in the air.
- an organic E device was manufactured under the same conditions as in Example 21 except that the material of the hole blocking layer 6 was changed to BCP, and its characteristics were examined. That is, about 20 nm of BCP was formed as the hole blocking layer 6 at a deposition rate of 6 nm / min. A light emission of 100 cd / m 2 was observed from 12.0 V, and a current of 200 mAZ cm 2 flowed at 19.4 V, and a green light emission of 1900 cd / m 2 was obtained. Was. The luminous efficiency at this luminance was 5.3 cd / A. Maximum luminance before breakthrough was 1 2 7 9 0 c dZm 2 .
- the organic EL device of the present invention was superior in durability to the device using BCP used as a general hole blocking material. Furthermore, it was found that the organic EL device was suitable for high-brightness light emission.
- An organic EL device as shown in FIG. 3 was prepared by forming an IT electrode in advance as a transparent anode 2 on a glass substrate 1, and a hole injection layer 3, a hole transport layer 4, a light emitting layer 5, A hole blocking layer 6, an electron transport layer 7, and a cathode (aluminum magnesium electrode) 9 were deposited in this order.
- the glass substrate 1 on which a 150 nm-thick ITO film was formed was washed with an organic solvent, and then the surface was washed by oxygen plasma treatment. This was mounted in a vacuum vapor deposition machine, and the pressure was reduced to less than or equal to 0 OOlPa.
- Bpy @ XDm (2) of the present invention was formed as a hole blocking layer and an electron transporting layer 6 and 7 at a deposition rate of 6 nm / min to about 30 nm.
- the pressure was returned to the atmospheric pressure, a mask for cathode deposition was inserted, the pressure was again reduced, and a MgAg alloy was deposited at a ratio of 10: 1 to about 200 nm to form a cathode 9.
- the fabricated devices were stored overnight in a vacuum desiccator, and their characteristics were measured in air at room temperature.
- an organic EL device was manufactured under the same conditions as in Example 22 except that B pyOXDm (2) according to the present invention was replaced with AlQ, and the characteristics were examined. That is, AIQ was formed as a light-emitting layer, a hole-blocking layer, and an electron-transport layer 5, 6 and 7 at a deposition rate of 6 nmZmin and about 50 nm. Green light emission of 100 cd dZm 2 was observed from 7.2 V. The maximum luminance before breakthrough of this element was 149 cd / m 2 .
- the organic EL device of the present invention was found to be excellent in durability and an organic EL device suitable for high-brightness light emission.
- An organic EL device as shown in FIG. 4 was prepared by forming an ITO electrode as a transparent anode 2 on a glass substrate 1 in advance, and a hole transport layer 4, a light emitting layer 5, an electron transport layer 7, and an electron Injection layer 8, cathode (aluminum electrode) 9 It was produced by vapor deposition.
- the glass substrate 1 on which an IT film with a thickness of 150 nm was formed was washed with an organic solvent, and then the surface was washed with oxygen plasma treatment. This was mounted in a vacuum evaporation machine, and the pressure was reduced to 0.001 Pa or less.
- NPD hole transport layer 4
- NPD hole transport layer 4
- CPBO (6) of the present invention was formed as an electron transporting layer 7 to a thickness of about 30 nm at a deposition rate of 6 nm / min.
- about 0.5 nm of lithium fluoride was formed as the electron injection layer 8 at a deposition rate of 0.6 nm min. All of the depositions so far were performed continuously without breaking vacuum.
- a cathode deposition mask was inserted, and aluminum was deposited to a thickness of about 200 nm to form a cathode 9.
- the fabricated device was stored overnight in a vacuum desiccator, and its characteristics were measured at room temperature in the air.
- an organic EL device was produced under the same conditions as in Example 23 except that the material of the electron transport layer 7 was replaced with Phpy 0 XD m (11) of the present invention. Was examined.
- the organic EL device was manufactured under the same conditions as in Example 23 except that the material of the electron transport layer ⁇ ⁇ ⁇ was replaced with FP hpy OXDm (16) of the present invention. A device was fabricated and its characteristics were examined.
- an organic EL device was manufactured under the same conditions as in Example 23, except that the material of the electron transport layer 7 was changed to A1q, and the characteristics were examined. That is, A1d3 was formed as the light emitting layer / electron transporting layers 5 and 7 at about 50 nm at a deposition rate of 6 nm / min. Emission of 100 cd dZm 2 was observed at 3.9 V, and emission of 1000 cd / m 2 was obtained at 7.8 V.
- the compound having an oxadiazole ring structure of the present invention, in which a substituted pyridyl group is linked, is excellent as an organic EL device compound because it has a good electron injection, a high electron transfer rate, and a stable thin film state. .
- the compound By manufacturing an organic EL element using a material, the driving voltage can be significantly reduced, and the durability can be improved. For example, it has become possible to expand into home appliances and lighting applications.
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Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005800091777A CN1938297B (zh) | 2004-03-25 | 2005-03-25 | 具有取代有吡啶基的噁二唑环结构的化合物和有机电致发光装置 |
| EP05727286A EP1746094A4 (en) | 2004-03-25 | 2005-03-25 | CONNECTION WITH A PYRIDYL GROUP OF SUBSTITUTED OXADIAZOLRING STRUCTURE, AND ORGANIC ELECTROLUMINESCENT DEVICE |
| KR1020067019559A KR101160706B1 (ko) | 2004-03-25 | 2005-03-25 | 피리딜기로 치환된 옥사디아졸환 구조를 갖는 화합물 및유기 전계 발광 소자 |
| JP2006511602A JP4879734B2 (ja) | 2004-03-25 | 2005-03-25 | ピリジル基で置換されたオキサジアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| US10/594,241 US7812341B2 (en) | 2004-03-25 | 2005-03-25 | Compound having oxadiazole ring structure substituted with pyridyl group, and organic electroluminescent device |
| US12/622,125 US7977671B2 (en) | 2004-03-25 | 2009-11-19 | Compound having oxadiazole ring structure substituted with pyridyl group and organic electroluminescence device |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-089277 | 2004-03-25 | ||
| JP2004089277A JP4610918B2 (ja) | 2004-03-25 | 2004-03-25 | ピリジル基で置換されたオキサジアゾール環構造を有する化合物 |
| JP2004088909 | 2004-03-25 | ||
| JP2004-088909 | 2004-03-25 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/594,241 A-371-Of-International US7812341B2 (en) | 2004-03-25 | 2005-03-25 | Compound having oxadiazole ring structure substituted with pyridyl group, and organic electroluminescent device |
| US12/622,125 Division US7977671B2 (en) | 2004-03-25 | 2009-11-19 | Compound having oxadiazole ring structure substituted with pyridyl group and organic electroluminescence device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005092888A1 true WO2005092888A1 (ja) | 2005-10-06 |
Family
ID=35056126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/006420 Ceased WO2005092888A1 (ja) | 2004-03-25 | 2005-03-25 | ピリジル基で置換されたオキサジアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US7812341B2 (ja) |
| EP (2) | EP2385052B1 (ja) |
| KR (1) | KR101160706B1 (ja) |
| CN (1) | CN1938297B (ja) |
| TW (1) | TWI371452B (ja) |
| WO (1) | WO2005092888A1 (ja) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007026847A1 (ja) * | 2005-08-31 | 2007-03-08 | Hodogaya Chemical Co., Ltd. | ピリジル基で置換されたトリアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| WO2007032357A1 (ja) * | 2005-09-12 | 2007-03-22 | Hodogaya Chemical Co., Ltd. | 芳香族複素環が結合したオキサジアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| JP2007291092A (ja) * | 2006-03-30 | 2007-11-08 | Chisso Corp | 新規ビピリジン誘導体、およびこれを含む有機電界発光素子 |
| JP2008108995A (ja) * | 2006-10-27 | 2008-05-08 | Shinshu Univ | 有機発光ダイオードデバイス |
| JP2008150365A (ja) * | 2006-11-20 | 2008-07-03 | Chisso Corp | 電子輸送材料およびこれを用いた有機電界発光素子 |
| JP2008214307A (ja) * | 2007-03-07 | 2008-09-18 | Chisso Corp | 電子輸送材料およびこれを用いた有機電界発光素子 |
| EP1793435A3 (en) * | 2005-11-30 | 2010-07-07 | Samsung Mobile Display Co., Ltd. | Organic light emitting device |
| US8153277B2 (en) * | 2006-03-24 | 2012-04-10 | Hodogaya Chemical Co., Ltd. | Compound having thiadiazole ring structure substituted with pyridyl group and organic electroluminescent device |
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| JP5009801B2 (ja) | 2005-08-31 | 2012-08-22 | 保土谷化学工業株式会社 | アリールアミン化合物および有機エレクトロルミネッセンス素子 |
| FR2921062A1 (fr) | 2007-09-17 | 2009-03-20 | Commissariat Energie Atomique | Composes utiles comme ligands et notamment comme chromophores organiques de complexation des lanthanides et leurs applications |
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| JPS542739A (en) * | 1977-06-09 | 1979-01-10 | Ricoh Co Ltd | Electrophotographic photoreceptor |
| JPH08176148A (ja) * | 1994-12-27 | 1996-07-09 | Chisso Corp | ヘテロ環を有するオキサジアゾール誘導体 |
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| JP2734341B2 (ja) | 1993-03-26 | 1998-03-30 | 住友電気工業株式会社 | 有機エレクトロルミネッセンス素子 |
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-
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- 2005-03-25 KR KR1020067019559A patent/KR101160706B1/ko not_active Expired - Fee Related
- 2005-03-25 US US10/594,241 patent/US7812341B2/en not_active Expired - Fee Related
- 2005-03-25 WO PCT/JP2005/006420 patent/WO2005092888A1/ja not_active Ceased
- 2005-03-25 CN CN2005800091777A patent/CN1938297B/zh not_active Expired - Fee Related
- 2005-03-25 EP EP11176413.0A patent/EP2385052B1/en not_active Expired - Lifetime
- 2005-03-25 TW TW094109285A patent/TWI371452B/zh not_active IP Right Cessation
- 2005-03-25 EP EP05727286A patent/EP1746094A4/en not_active Withdrawn
-
2009
- 2009-11-19 US US12/622,125 patent/US7977671B2/en not_active Expired - Fee Related
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| JPS542739A (en) * | 1977-06-09 | 1979-01-10 | Ricoh Co Ltd | Electrophotographic photoreceptor |
| JPH08176148A (ja) * | 1994-12-27 | 1996-07-09 | Chisso Corp | ヘテロ環を有するオキサジアゾール誘導体 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007026847A1 (ja) * | 2005-08-31 | 2007-03-08 | Hodogaya Chemical Co., Ltd. | ピリジル基で置換されたトリアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| JP5175099B2 (ja) * | 2005-08-31 | 2013-04-03 | 保土谷化学工業株式会社 | ピリジル基で置換されたトリアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| WO2007032357A1 (ja) * | 2005-09-12 | 2007-03-22 | Hodogaya Chemical Co., Ltd. | 芳香族複素環が結合したオキサジアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| US8247087B2 (en) | 2005-09-12 | 2012-08-21 | Hodogaya Chemical Co., Ltd. | Compound having oxadiazole ring structure bonded with aromatic heterocyclic ring and organic electroluminescent device |
| JP5291340B2 (ja) * | 2005-09-12 | 2013-09-18 | 保土谷化学工業株式会社 | 芳香族複素環が結合したオキサジアゾール環構造を有する化合物および有機エレクトロルミネッセンス素子 |
| EP1793435A3 (en) * | 2005-11-30 | 2010-07-07 | Samsung Mobile Display Co., Ltd. | Organic light emitting device |
| US8153277B2 (en) * | 2006-03-24 | 2012-04-10 | Hodogaya Chemical Co., Ltd. | Compound having thiadiazole ring structure substituted with pyridyl group and organic electroluminescent device |
| JP2007291092A (ja) * | 2006-03-30 | 2007-11-08 | Chisso Corp | 新規ビピリジン誘導体、およびこれを含む有機電界発光素子 |
| JP2008108995A (ja) * | 2006-10-27 | 2008-05-08 | Shinshu Univ | 有機発光ダイオードデバイス |
| JP2008150365A (ja) * | 2006-11-20 | 2008-07-03 | Chisso Corp | 電子輸送材料およびこれを用いた有機電界発光素子 |
| JP2008214307A (ja) * | 2007-03-07 | 2008-09-18 | Chisso Corp | 電子輸送材料およびこれを用いた有機電界発光素子 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100066244A1 (en) | 2010-03-18 |
| EP2385052B1 (en) | 2013-11-13 |
| US7977671B2 (en) | 2011-07-12 |
| CN1938297A (zh) | 2007-03-28 |
| KR101160706B1 (ko) | 2012-06-28 |
| US20080017846A1 (en) | 2008-01-24 |
| EP1746094A4 (en) | 2009-06-10 |
| TW200604194A (en) | 2006-02-01 |
| EP1746094A1 (en) | 2007-01-24 |
| KR20070027522A (ko) | 2007-03-09 |
| CN1938297B (zh) | 2011-09-14 |
| TWI371452B (en) | 2012-09-01 |
| US7812341B2 (en) | 2010-10-12 |
| EP2385052A1 (en) | 2011-11-09 |
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