WO2001079581A1 - Procede de formation d'une couche mince pour un dispositif et dispositif d'electroluminescence organique - Google Patents
Procede de formation d'une couche mince pour un dispositif et dispositif d'electroluminescence organique Download PDFInfo
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- WO2001079581A1 WO2001079581A1 PCT/JP2001/002455 JP0102455W WO0179581A1 WO 2001079581 A1 WO2001079581 A1 WO 2001079581A1 JP 0102455 W JP0102455 W JP 0102455W WO 0179581 A1 WO0179581 A1 WO 0179581A1
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- Prior art keywords
- deposition
- thin film
- forming
- layer
- organic
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- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical group C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 1
- 125000002529 biphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C12)* 0.000 description 1
- DWNAZPAGBYQEID-UHFFFAOYSA-K bis[(2-hydroxy-5-methylbenzoyl)oxy]alumanyl 2-hydroxy-5-methylbenzoate Chemical compound Cc1ccc(O)c(c1)C(=O)O[Al](OC(=O)c1cc(C)ccc1O)OC(=O)c1cc(C)ccc1O DWNAZPAGBYQEID-UHFFFAOYSA-K 0.000 description 1
- UFVXQDWNSAGPHN-UHFFFAOYSA-K bis[(2-methylquinolin-8-yl)oxy]-(4-phenylphenoxy)alumane Chemical compound [Al+3].C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC([O-])=CC=C1C1=CC=CC=C1 UFVXQDWNSAGPHN-UHFFFAOYSA-K 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- SBAUTRQODRAAMY-UHFFFAOYSA-N calcium;5-chloroquinolin-8-ol Chemical compound [Ca].C1=CN=C2C(O)=CC=C(Cl)C2=C1.C1=CN=C2C(O)=CC=C(Cl)C2=C1 SBAUTRQODRAAMY-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010549 co-Evaporation Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- HQQKMOJOCZFMSV-UHFFFAOYSA-N dilithium phthalocyanine Chemical compound [Li+].[Li+].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 HQQKMOJOCZFMSV-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000008376 fluorenones Chemical class 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229940083761 high-ceiling diuretics pyrazolone derivative Drugs 0.000 description 1
- 150000007857 hydrazones Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- CSPVGJWCKNBRRB-UHFFFAOYSA-N indium;quinolin-8-ol Chemical compound [In].C1=CN=C2C(O)=CC=CC2=C1.C1=CN=C2C(O)=CC=CC2=C1.C1=CN=C2C(O)=CC=CC2=C1 CSPVGJWCKNBRRB-UHFFFAOYSA-N 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229940079865 intestinal antiinfectives imidazole derivative Drugs 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229940049918 linoleate Drugs 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- SKEDXQSRJSUMRP-UHFFFAOYSA-N lithium;quinolin-8-ol Chemical compound [Li].C1=CN=C2C(O)=CC=CC2=C1 SKEDXQSRJSUMRP-UHFFFAOYSA-N 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 1
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- MOOHXQFFIPDLNX-UHFFFAOYSA-N magnesium;quinolin-8-ol Chemical compound [Mg].C1=CN=C2C(O)=CC=CC2=C1.C1=CN=C2C(O)=CC=CC2=C1 MOOHXQFFIPDLNX-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical group C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000004957 naphthylene group Chemical group 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 150000007978 oxazole derivatives Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-M phenolate Chemical compound [O-]C1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-M 0.000 description 1
- 229940031826 phenolate Drugs 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 150000004986 phenylenediamines Chemical class 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- JEXVQSWXXUJEMA-UHFFFAOYSA-N pyrazol-3-one Chemical class O=C1C=CN=N1 JEXVQSWXXUJEMA-UHFFFAOYSA-N 0.000 description 1
- 150000003219 pyrazolines Chemical class 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- 125000005548 pyrenylene group Chemical group 0.000 description 1
- ZXZKYYHTWHJHFT-UHFFFAOYSA-N quinoline-2,8-diol Chemical compound C1=CC(=O)NC2=C1C=CC=C2O ZXZKYYHTWHJHFT-UHFFFAOYSA-N 0.000 description 1
- 125000005493 quinolyl group Chemical group 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- JACPFCQFVIAGDN-UHFFFAOYSA-M sipc iv Chemical compound [OH-].[Si+4].CN(C)CCC[Si](C)(C)[O-].C=1C=CC=C(C(N=C2[N-]C(C3=CC=CC=C32)=N2)=N3)C=1C3=CC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 JACPFCQFVIAGDN-UHFFFAOYSA-M 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 125000005650 substituted phenylene group Chemical group 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- OPSWAWSNPREEFQ-UHFFFAOYSA-K triphenoxyalumane Chemical compound [Al+3].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 OPSWAWSNPREEFQ-UHFFFAOYSA-K 0.000 description 1
- 125000006617 triphenylamine group Chemical group 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/12—Organic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
-
- 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
- H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
-
- 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 radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
- H10K71/164—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using vacuum deposition
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/10—Transparent electrodes, e.g. using graphene
- H10K2102/101—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO]
- H10K2102/103—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO] comprising indium oxides, e.g. ITO
-
- 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
- H10K85/30—Coordination compounds
- H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
- H10K85/324—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising aluminium, e.g. Alq3
-
- 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
-
- 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
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
-
- 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
- H10K85/656—Aromatic compounds comprising a hetero atom comprising two or more different heteroatoms per ring
- H10K85/6565—Oxadiazole compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/917—Electroluminescent
Definitions
- the present invention relates to a method for forming a thin film layer for an element and an organic electroluminescent device.
- an organic EL element (Hereinafter referred to as an organic EL element)
- the present invention relates to a method for forming a thin film layer and an organic EL device manufactured using the method.
- Organic EL devices are generally based on a transparent electrode (anode), a light-emitting layer made of an organic substance, and a counter electrode (cathode), and often have an electron injection layer / a hole injection layer, etc. in order to further improve light emission characteristics. These have a structure in which these are laminated on a substrate. This is based on the principle that electrons injected from the cathode into the light emitting layer and holes injected from the anode into the light emitting layer are recombined in the light emitting layer to emit light.
- each layer is often formed by a vacuum evaporation method.
- Japanese Patent Application Laid-Open No. H10-3335602 describes the relationship between the vapor deposition position of the material to be vapor deposited on the vapor deposition substrate and the vapor density as a function of cos n 0.
- n value is set to 3 to 6
- the evaporation source is set at a position distant from the center of the deposition substrate.
- organic EL devices with a structure in which thin film layers are stacked on a large-screen substrate, From the viewpoint of ensuring the uniformity of the light emission performance at each position in the device, the following points cannot be solved.
- the present invention has been made from the above viewpoint, and is a method for forming a uniform thin film layer for an element by a vacuum evaporation method even on a large-screen evaporation substrate.
- the change in film thickness at each position on the plate is small, and when multiple vapor deposition sources are co-deposited, the deposition of a thin film layer for an element with a small change in the concentration of each vapor deposition material at each position on the vapor deposition plate
- the aim is to provide a method.
- Another object of the present invention is to provide an organic EL device manufactured using such a method for forming a thin film layer for an device, which has a small variation in light emission performance at each position in the device. Disclosure of the invention
- the present inventors have conducted intensive studies to achieve the above object, and as a result, when depositing a plurality of deposition materials by a vacuum deposition method, the position of the deposition material i to be deposited on the deposition substrate and the deposition film The thickness relationship is expressed as a function of cos " ⁇ , and it was found that uniformity of the film thickness could be extremely enhanced by controlling the ni values of all the vapor deposition materials to a specific range, and the strength and strength were determined.
- the present invention has been completed based on the findings, and the gist of the present invention is as follows.
- ⁇ 2> The method for forming a thin film layer for an element according to ⁇ 1>, wherein the constant k is 2 to 3.
- ⁇ 3> The method for forming a thin film layer for an element according to ⁇ 1>, wherein the constant k is 2.
- the ni value control method is one or more of (a) a method of adjusting the shape of the crucible holding the evaporation source, and (b) a method of adjusting the evaporation rate.
- ⁇ 6> The method for forming a thin film layer for an element according to any one of ⁇ 1> to ⁇ 4>, wherein two or more deposition materials are simultaneously deposited to form one co-deposited film.
- ⁇ 7> The method for forming a thin film layer for a device according to any one of ⁇ 1> to ⁇ 6>, wherein the evaporation is performed by an eccentric rotation evaporation method.
- ⁇ 8> In the method for forming a thin film layer for an element according to any one of ⁇ 1> to ⁇ 7>, an organic material constituting each layer of the organic electroluminescent device is used as the vapor deposition material.
- the evaporation material is a host material for the light emitting layer and a dopant material for the light emitting layer, and these are co-evaporated to emit light from the organic electroluminescent element.
- An organic electroluminescent device comprising an organic layer formed by the method for forming a device thin film layer according to ⁇ 8>.
- An organic electroluminescent device having a light emitting layer formed by the method for forming a thin film layer for an element according to ⁇ 9>.
- FIG. 1 is a conceptual diagram of a film forming method by an eccentric rotary evaporation method according to an embodiment of the present invention.
- FIG. 2 is a diagram showing the variation of the emission chromaticity (X-axis) of the organic EL device by the film forming method of Example 1 and Comparative Example 1 of the present invention.
- FIG. 3 is a diagram showing the variation of the emission chromaticity (Y-axis) of the organic EL device according to the film forming method of Example 1 and Comparative Example 1 of the present invention.
- FIG. 4 is a diagram showing variations in the power generation conversion efficiency (efficiency) of the organic EL device according to the film forming methods of Example 1 and Comparative Example 1 of the present invention.
- the present invention relates to a film forming method for depositing two or more vapor deposition materials by a vacuum vapor deposition method and forming one or more thin films on a vapor deposition substrate.
- the relationship of the following equation (1) (1)
- the cosine side of the equation (1) is established assuming that the evaporation source is a point evaporation source.
- the ni value is a positive value indicating the spread of the vapor particles from the evaporation source, and originally differs depending on the vapor deposition material and is a unique value.
- metals such as A1 have large n i values, generally 6 to
- ni values are preferably about 2 to 6, and more preferably 2 to 4.
- this ni value is controlled to adjust the ni values of a plurality of vapor deposition materials within a range of k ⁇ 0.5 (k is a constant of 2 to 5) and perform vacuum vapor deposition. .
- the constant k is more preferably 2 to 3, and particularly preferably about 2 in that the uniformity of the film is further enhanced and the loss due to the diffusion of the vapor deposition material can be suppressed. Further, when this value is about 2, it is possible to form a highly uniform film without using the eccentric rotary evaporation method described later.
- examples of the method for controlling the above-mentioned ni value include the following methods (a) and (b).
- the factors controlling this include, for example, the diameter (d) of the opening of the crucible, the thickness (t) and the depth (h) of the opening, and a method of controlling the ni value by adjusting these. It is. For example, increasing dZt decreases the value of n i, and decreasing the depth h of the crucible decreases the value of n i. That is, by changing d / t and h, the ni value can be adjusted to a desired value.
- the crucible used is generally a cylindrical material made of quartz, graphite, glassy carbon, BN (boron nitride), alumina or the like.
- Such a control method of the ni value may use any one of the methods (a) and (b), or may use a combination of two or more methods.
- the ni value during film formation of each vapor deposition material can be controlled within a certain range (k ⁇ 0.5).
- the object of the present invention has been achieved.
- a plurality of thin films are formed by sequentially depositing a plurality of deposition materials while controlling the ni values to be substantially the same.
- the thickness of each film is uniform at each position on the deposition substrate, and when a plurality of deposition materials are co-deposited simultaneously and one co-deposition film is formed, each film is formed over the entire surface of the deposition substrate.
- a thin film layer with a small change in the concentration of the evaporation material can be formed.
- a deposition source between an evaporation source and an evaporation substrate is required. It is preferable to provide a so-called chopper mechanism on the side.
- the adjustment may be performed by adjusting the n i value by the method (a) or (b) and maintaining the n i value while reducing the amount of vapor reaching the vapor deposition substrate.
- the chopper mechanism include, for example, a mechanism having a circular-cylindrical opening at an upper portion of a cylinder, and opening and closing at regular time intervals while rotating.
- the method of forming a thin film layer for an element of the present invention may be any method as long as the above conditions are satisfied.
- a method in which a deposition substrate is fixed without rotating, and a deposition source is disposed below the center thereof to perform deposition non-rotational deposition method.
- a method of rotating the vapor deposition substrate may be used.
- a so-called eccentric rotation evaporation method in which the evaporation substrate is rotated and the evaporation source is placed at a position away from the rotation center of the evaporation substrate may be used. This eccentric rotation evaporation method is an effective method particularly when the area of the evaporation substrate is large.
- FIG. 1 A specific method of the eccentric rotary evaporation method can be conceptually shown in FIG. 1, for example.
- 1 is a deposition substrate
- 2 is a deposition source base
- 3 is a deposition substrate rotation axis
- 4 is a deposition source.
- the size of the deposition substrate is usually 20 to 80 cm on the long side
- the distance h between the deposition source base and the deposition substrate is 20 to L0 cm
- the eccentricity of the deposition source a is 10 to 40.
- the film is formed as cm.
- the rotation speed is usually 2 to 10 rpm.
- the above-described method for forming a thin film layer for an element can be used, for example, for a solar cell, an electrophotographic photoreceptor, and a functional element having an organic material as a constituent element.
- a method for forming a thin film layer in the manufacture of an organic EL device will be described below. That is, the present invention provides the method for forming a thin film layer for an element according to the above method, wherein an organic material constituting each layer of the organic EL element is used as the vapor deposition material, and an organic layer of the organic EL element is formed. It is a membrane method.
- the film thickness changes at each position in the device.
- An organic layer of an organic EL device having a small degree of change is obtained. As a result, even if the device has a large area, the light emitting performance at each position in the organic EL device does not vary, and uniform light emitting performance can be exhibited.
- the evaporation material is a host material for the light emitting layer and a dopant material for the light emitting layer, and these are co-evaporated to form the light emitting layer of the organic EL element.
- the dopant concentration may be adjusted by providing the above-described chopper mechanism.
- the thickness of the light emitting layer can be made uniform and the dopant concentration in the light emitting layer can be made uniform. Therefore, even if the device has a large area, the emission performance of the organic EL device does not vary, and a more uniform emission performance can be exhibited.
- the organic layer including the light emitting layer of the organic EL device will be specifically described.
- the organic EL device used in the present invention generally has at least a recombination region and a light-emitting region as an organic layer on an anode formed of a transparent electrode. Since the recombination region and the light emitting region usually exist in the light emitting layer, in the present invention, only the light emitting layer may be used as the organic layer. However, if necessary, other than the light emitting layer, for example, hole injection may be used. A layer, an electron injection layer, an organic semiconductor layer, etc. can also be used. A cathode is formed on these organic layers.
- the configuration (4) is preferably used.
- the cathode is formed of a transparent electrode.
- taking out light from both the positive and negative electrodes Is also possible.
- the evaporation material constituting the light emitting layer of the organic EL device (a host material), the general formula (I) Bruno Y 3
- a distyryl arylene compound represented by the following formula is preferably used. This compound is disclosed in Japanese Patent Application Laid-Open No. 2-247272.
- ⁇ E 1-4 are each a hydrogen atom, alkyl Le group having 1 to 6 carbon atoms, an alkoxy group of from 1 to 6 carbon, Ararukiru group 7-8 carbon atoms, a substituted walk is unsubstituted carbon It represents an aryl group having 6 to 18 carbon atoms, a substituted or unsubstituted cyclohexyl group, a substituted or unsubstituted aryloxy group having 6 to 18 carbon atoms, and an alkoxy group having 1 to 6 carbon atoms.
- the substituent includes an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an aralkyl group having 7 to 8 carbon atoms, an aryloxy group having 6 to 18 carbon atoms, and a 1 to 6 carbon atoms.
- 1 to 6 carbon atoms 1 to 6 carbon atoms, carboxyl group, styryl group, 6 to 20 carbon atoms, arylcarbonyl group, 6 to 20 carbon atoms, aryloxycarbonyl group, 1 carbon atoms Represents an alkoxycarbonyl group, a vinyl group, an anilinocarbonyl group, a carpamoyl group, a phenyl group, a nitro group, a hydroxyl group, or a halogen atom. These substituents may be single or plural.
- ⁇ 1 ⁇ Y 4 are also the same, also may be different from each other, Y 1 and Y 2 and Y 3 and Y 4 are bonded to group that is substituted for each other, substituted or unsubstituted saturated five-membered ring Alternatively, it may form a substituted or unsubstituted saturated six-membered ring.
- Ar represents a substituted or unsubstituted arylene group having 6 to 40 carbon atoms, which may be single-substituted or plurally substituted, and the bonding portion may be any of ortho, para and meta.
- ⁇ to ⁇ 4 represent an alkoxy group having 1 to 6 carbon atoms, It is selected from aralkyl groups having a prime number of 7 to 8, substituted or unsubstituted naphthyl groups, biphenyl groups, cyclohexyl groups, and aryloxy groups.
- Examples of such distilylene-based compounds include the following.
- a metal complex of 8-hydroxyquinoline or a derivative thereof can be given.
- a metal chelate oxanoide compound containing a chelate of an oxine generally 8-quinolinol or 8-hydroxyquinoline.
- Such compounds exhibit high levels of performance and are easily formed into thin film form. Examples of this oxanoid compound satisfy the following structural formula. ⁇ 0 ⁇ ⁇ ft
- M t represents a metal
- n is an integer of 1 to 3
- Z is an independent atom at each position, and represents atoms necessary for completing at least two or more fused aromatic rings. Shown.
- the metal represented by Mt can be a monovalent, divalent or trivalent metal, for example, an alkali metal such as lithium, sodium and potassium, and an alkaline earth such as magnesium and calcium. Metals or earth metals such as boron or aluminum. Generally, any monovalent, divalent, or trivalent metal known to be a useful chelating compound can be used.
- Z represents an atom in which at least one of two or more condensed aromatic rings forms a heterocyclic ring composed of azole or azine. Here, if necessary, another different ring can be added to the fused aromatic ring. Further, in order to avoid bulky molecules without improving the functions, it is preferable to keep the number of atoms represented by Z at 18 or less.
- chelated oxanoid compounds include tris (8-quinolinol) aluminum, bis (8-quinolinol) magnesium, bis (benzo-8-quinolinol) zinc, and bis (2-methyl-18-quinolinolate).
- Aluminoxide tris (8-quinolinol) indium, tris (5-methyl-8-quinolinol) aluminum, 8-quinolinol lithium, tris (5-chloro-1-quinolinol) gallium, bis (5— Chloro-8-quinolinol) calcium, 5,7-dichloro-18-quinolinol aluminum aluminum, tris (5,7-dipromo 8-hydroxyquinolinol) aluminum.
- the metal complex of phenolate-substituted 8-hydroxyquinoline described in Japanese Patent Application Laid-Open No. 5-198378 is a preferable material as a blue light emitting material.
- Specific examples of the phenolate-substituted 8-hydroxyquinoline metal complex include bis (2-methyl-18-quinolinolate) (phenolate) aluminum (III), bis (2-methyl-8-quinolinolate) (0 —Cresolate) Aluminum Aluminum (III), bis (2-methyl-18-quinolinolate) (m-cresolate) aluminum (111), bis (2-methyl-18-quinolinolate) (p-cresolate) aluminum (III) Bis (2-methyl-18-quinolinolate) (0-phenylphenolate) aluminum (111), bis (2-methyl8_quinolinolate) (m-phenylphenolate) aluminum (III), Bis (2-methyl-8-quinolinolate) (p-phenylphenolate) aluminum (111), bis (2-methyl-18-quinolinolate) (2,3-d
- first light emitting layer when a two-layer light emitting layer is formed, various known light emitting materials can be used as the first light emitting layer.
- a preferred first light emitting layer is a green fluorescent dye added to the above oxanoid compound. A small amount of 2-3% by weight can be mentioned.
- the green fluorescent dyes added here are coumarin-based and quinacridone-based. By adding these elements, the element having the first light emitting layer can realize high efficiency green light emission of 5 to 20 (lm / w).
- a oxanoid compound obtained by adding 0.2 to 3% by weight of rubrene and its derivative, a dicyanopyran derivative, and a perylene derivative is used.
- These devices can emit light with high efficiency of 3 to 10 (1 m / w).
- orange color is possible even if green fluorescent dye and red fluorescent dye are added at the same time.
- coumarin and a dicyanopyran dye, quinacridone and a perylene dye, and coumarin and a perylene dye may be used simultaneously.
- Another particularly preferred first emissive layer is a polyary Lenvinylene derivative.
- Various known blue light-emitting materials can be used for the second light-emitting layer.
- distyryl arylene derivatives, tris styryl arylene derivatives, and aryloxylated quinolyl metal complexes are high-level blue light-emitting materials.
- the polymer include polyparaphenylene derivatives.
- the thickness of the light emitting layer is not particularly limited, but is preferably Inn! To 10 lim, particularly preferably in the range of 5 nm to 0.5 m.
- the hole injection layer is not always necessary for the device used in the present invention, but is preferably used for improving light emission performance.
- This hole injection layer is a layer that assists the injection of holes into the light emitting layer, has a high hole mobility, and a small ionization energy, usually 5.5 eV or less.
- a material that transports holes to the light emitting layer with a lower electric field is preferable, and furthermore, the mobility of holes is, for example, at least 10 4 to 10 6 V / cm when an electric field is applied. — 6 cm 2 to ZV ′ second is more preferable.
- the vapor deposition material constituting such a hole injection layer of the organic EL element there is no particular limitation on the vapor deposition material constituting such a hole injection layer of the organic EL element as long as it has the above-mentioned preferable properties.
- a photoconductive material it has been conventionally used as a hole charge transport material.
- Any of known materials and known materials used for a hole injection layer of an EL element can be selected and used. Specific examples thereof include, for example, triazole derivatives (see U.S. Pat. No. 3,112,197), oxadiazole derivatives (see U.S. Pat. No. 3,189,447), imidazole derivatives (Japanese Patent Publication No. No. 16096, etc.), polyarylalkane derivatives (US Pat. No. 3,615,402, US Pat. No.
- porphyrin compounds include porphine, 1,10,15,20-tetraphenyl 21H, 23H-porphine copper (I1), 1,10,15,20-tetraphenyl-21H, 23H-porphine zinc (II), 5,10,15,20-tetrakis (pentafluorophenyl)-21H, 23H-porphine, silicon phthalocyanine oxide, aluminum phthalocyanine mouth lid, phthalocyanine (metal-free), dilithium phthalocyanine And copper tetramethyl phthalocyanine, copper phthalocyanine, chromium phthalocyanine, zinc phthalocyanine, lead phthalocyanine, titanium phthalocyanine oxide, Mg phthalocyanine, and copper methyl phthalocyanine.
- porphine 1,10,15,20-tetraphenyl 21H, 23H-porphine copper (I1), 1,10,15,20-tetraphenyl-21H
- aromatic tertiary amine compound and styrylamine compound include N, N, N,, N, -tetraphenyl-4,4, -diaminophenyl, N, N, diphenyl-N, N , 1-bis- (3-methylphenyl) -1- [1,1'-biphenyl] -4,4'-diamine (hereinafter abbreviated as TPD), 2,2-bis- (4-di-p-tolylaminophenyl) propane, 1,1-bis (4-di-P-tolylaminophenyl) cyclohexane, N, N, N ', N'-tetra-P-tolyl-1,4, -diaminophenyl, 1,1-bis (4 —Di-p-tolylaminophenyl) —4-phenylcyclohexane, bis (4-dimethylamino-2-methylphenyl) phenylmethane,
- 5,061,569 for example, 4,4′-bis [N— (1-naphthyl) Le) 1-N-phenylamino] biphenyl (hereinafter abbreviated as NPD), and three triphenylamine units described in JP-A-4108888. 4, 4 ', 4 "tris [N- (3-methylphenyl) -N-phenylamino] triphenylamine (hereinafter abbreviated as MTDATA) and the like.
- inorganic compounds such as P-type Si and p-type SiC can also be used as the material for the hole injection layer.
- the thickness of the hole injecting layer is not particularly limited, but is usually 5 nm to 5 zm
- This hole injecting layer is composed of one or more of the above-mentioned materials.
- the organic semiconductor layer may be a layer obtained by laminating a hole injection layer made of a compound different from the hole injection layer.
- a layer which assists electron injection and has a conductivity of 10 to 1 QS / cm or more is preferable.
- Conductive oligomers such as arylamine oligomers and conductive dendrimers such as arylamine dendrimers can be used.
- the electron injection layer is a layer that assists injection of electrons into the light emitting layer, and has a high electron mobility.
- the adhesion improving layer is a layer made of a material having good adhesion to the cathode, among the electron injection layer.
- Preferred examples of the vapor deposition material constituting the electron injection layer of such an organic EL device include, for example, a metal complex of 8-hydroxyquinoline or a derivative thereof, or an oxaziazole derivative. Further, as the material used for the adhesion improving layer, a metal complex of 8-hydroxyquinoline or a derivative thereof is particularly preferable.
- the metal complex of 8-hydroxyquinoline or a derivative thereof include a metal chelate oxanoid compound containing a chelate of oxine (generally, 8-quinolinol or 8-hydroxyquinoline).
- the oxadiazole derivatives are represented by the general formulas (11), (III) and (IV). « ⁇ ,
- a r 1 D ⁇ A r 1 3 represents a substituted or unsubstituted Ariru group, A r 1 ° and A r 1 1 and A r 1 2 and A r 1 3 is a mutually identical in each and it may also have been different, electron transport compounds I table in showing the a r 1 4 substituted or unsubstituted Ariren group.
- the aryl group includes a phenyl group, a biphenyl group, an anthranyl group, a perylenyl group, a pyrenyl group, and the like.
- the arylene group includes a phenylene group, a naphthylene group, a biphenylene group, and an anthracenylene group.
- a benzylenylene group and a pyrenylene group examples include an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, and a cyano group.
- the electron transfer compound is preferably a thin film-forming compound. Specific examples of the above electron transfer compounds include:
- the organic layer has the above configuration, but may further include an electron barrier layer, an adhesion improving layer, and the like.
- the method of forming the film is not limited, and may be the method of the present invention or another known method.
- Examples of the vapor deposition material for the electron barrier layer include the above-mentioned TPD and polyphenyl compounds, and examples of the vapor deposition material for the adhesion improving layer include A1q (a metal complex of 8-hydroquinoline) mentioned as the electron injection material. No.
- the method for forming a thin film layer for an element of the present invention may be applied. However, this is not always necessary, and as described in each description, another film forming method is used. You may.
- the anode ITO having a large work function (4 eV or more) can be cited.
- the anode is It can be manufactured by forming a thin film by sputtering, ion plating, electron beam evaporation, CVD, MOC VD, plasma CVD, etc.
- the transmittance of the anode with respect to the light emission be greater than 10%.
- the sheet resistance of the anode is preferably several hundreds ⁇ / port or less.
- the thickness of the anode depends on the material, but is usually preferably in the range of 10 nm to lxm, and 10 to 200 nm.
- a substrate electrode is usually used as an anode.
- a metal, an alloy, an electrically conductive compound, or a mixture thereof having a low work function (4 eV or less) is used as an electrode material.
- a deposition source of such an electrode material a specific material is used. examples include sodium, sodium mono-potassium alloy, magnesium, lithium, magnesium-silver alloy, aluminum / aluminum oxide two ⁇ beam (A 1 2 0 3), aluminum, lithium alloys, indium etc. rare earth metal.
- This cathode can be manufactured by forming a thin film from these electrode substances by a method similar to the method of forming a transparent electrode, such as evaporation or sputtering.
- the sheet resistance as the cathode is preferably several hundred ⁇ square or less, and the film thickness is usually preferably in the range of 10 nm to lm and 50 to 200 nm.
- the organic EL device used in the present invention it is preferable that one of the anode and the cathode is transparent or translucent because it transmits light and thus has high light extraction efficiency.
- the substrate used in the present invention is preferably a transparent material which is rigid enough to support the multicolor light emitting device.
- the multicolor light-emitting device is reinforced by arranging the substrate to increase mechanical strength such as impact resistance.
- the material include a glass plate, a ceramic plate, and a plastic plate (polycarbonate resin, acrylic resin, vinyl chloride resin, polyethylene terephthalate resin, polyimide resin, polyester resin, and the like).
- the method for forming the element thin film of the present invention is as described above.
- the organic EL device provided with the light emitting layer and the organic layer has the following performance. That is, the uniformity of each film thickness of the organic layer is high, and as a result, the uniformity of the light emitting performance of the device is high.
- the uniform performance of this luminous performance is based on, for example, the assumption that there are no non-luminous points, and that the chromaticity varies (changes) depending on the distance from the center of the vapor deposition substrate and the power due to the distance from the center of the vapor deposition substrate. It can be confirmed by the variation (change) of the conversion efficiency.
- the variation of the emission chromaticity according to the distance from the center of the deposition substrate is 0.0005 / 250 mm or less for the CIE emission chromaticity X coordinate, 0.002 / 250 mm or less, and the Y coordinate variation. Of less than 0.02 / 250mm, and even less than 0.0125mm.
- a variation in power conversion efficiency of 15% / 250mm or less can be obtained.
- the variation in light emission performance within the same device is as follows: CIE emission chromaticity: 0.005 / 250 mm or less for the X coordinate, 0.02Z 250 mm or less for the variation of the Y coordinate, power Regarding the variation in conversion efficiency, it is possible to obtain an element of 15% / 250mm or less.
- the vertical distance between the vapor deposition substrate (size 360 X 465mm) and the vapor deposition source base is 500mm, and the vacuum vapor deposition apparatus with the vapor deposition source set at a position 250mm away from the intersection of the perpendicular line dropped from the vapor deposition substrate center to the vapor deposition source base Using. 1.5 g of tris (8-quinolinol) aluminum (hereinafter abbreviated as Al Q) was used as the evaporation source in a graphite crucible with an opening diameter of 25 mm, a wall pressure of 1.6 mm, and a depth of 70 mm. The bottom of the crucible was evenly filled.
- Example 5 (Experimental example 5, hereinafter abbreviated as DPVB i) was deposited until the film thickness at the center of the substrate became 2500 A.
- the crucible temperatures were set to 258, 260, 287, and 230 ° C, respectively, and the deposition rate was adjusted to 1.
- OA / s in all cases.
- the respective n i values are as shown in Table 1 below.
- the deposition was performed in the same manner as in Experimental Example 1 and Example 4), and the n i value was measured. At this time, the deposition temperature was 275 ° C and the ni value was 6.28.
- the vertical distance between the deposition substrate and the deposition source base is 50 Omm, and the deposition source is set at a position 25 Omm away from the intersection with the vertical line lowered from the center of the deposition substrate to the deposition source base.
- the following film formation was performed by the eccentric rotation evaporation method at a rotation speed of 4.8 rpm.
- the crucible used was made of graphite with an opening diameter of 25 mm, a wall pressure of 1.6 mm, and a depth of 7 Omm.
- an evaporation mask for organic film deposition (made of SUS, plate thickness: 0.2 nm) is attached, and films a to d (film formations 1 to 4) are formed.
- a vapor deposition mask for patterning (SUS, plate thickness: 0.2 nm) is attached, and inorganic vapor deposition material e is deposited5.Each substrate has an emission area of 4 x 8 mm. Was prepared. a. fel
- Evaporation material 4, 4 ', 4 "-tris [N— (3-methylphenyl) -N-phenylamino] triphenylamine (hereinafter abbreviated as MTDATA) as the evaporation material for the first hole injection layer
- Evaporation material 4,4-bis [N- (1-naphthyl) -1-N-phenylamino] biphenyl (hereinafter abbreviated as NPD) as the second hole injection layer material
- Evaporation material Emission dopant material 4, 4'-bis [2- (4- (N, N-di-p-tolyl) phenyl] vinyl] piphenyl (hereinafter referred to as "emission layer deposition material”)
- DTAVB i DTAVB i
- luminescent host material 4 4-bis (2,2-diphenylvinyl) biphenyl (hereinafter abbreviated as DPVB i)
- n i value (host material, n3H value) 2.35
- Evaporation material Electron transport material Tris (8-quinolinol) Aluminum (hereinafter referred to as
- Evaporation material Cathode material Alloy material composed of A 1 and Li with a Li concentration of 10 at.%.
- Example 1 the deposition of the dopant material in forming the light emitting layer was performed in exactly the same manner as in Example 1 except that the deposition rate was adjusted to 0.05 AZs by lowering the crucible temperature without using a chopper mechanism. An element was manufactured. The n i value (n 3D value) of this dopant material is 6.28.
- the change in power conversion efficiency (lmZW) with respect to the distance from the center of the deposition substrate is about 20% at a distance of 250 mm.
- the vapor deposition of the vapor deposition source table At the intersection of the vertical line at the point where the source is located and the deposition substrate, and at the position on the deposition substrate near the center of 10 cm from the intersection, the glass substrates 1 and 2 on which ITO was deposited to a thickness of 120 nm were respectively placed. Loading. After the degree of vacuum was evacuated until the Do less 2 X 10_ 4 P a, to fix the evaporation material six evaporation sources to deposit a position vertically below the glass board 1 one by one deposition Was done.
- the deposition conditions for each film formation are the same as in Example 1.
- the glass substrate 1 on the evaporation substrate is always on the perpendicular to each evaporation source, and the glass substrate 2 is located at a position closer to the center of 10 cm from the evaporation source, and the evaporation source and the glass substrate are fixed. This means that the film was formed in this state.
- a chopper mechanism was provided as in Example 1. Further, as in Example 1, a patterning mask was also mounted.
- a device 1 (one perpendicular to the vapor deposition source) having a light-emitting area of 4 ⁇ 8 mm and a device 2 (one near the center of the device 1 by 10 cm) were obtained.
- Table 2 summarizes the film thickness, the difference between the film thicknesses, and the rate of change of the two organic material layers, and Table 3 summarizes the luminous efficiency, the difference between the light emitting efficiencies, and the rate of change thereof.
- the organic EL devices of Films 1 to 5 were formed by the vacuum deposition method in the same manner as in Example 2 except that the deposition conditions of Film 1 of Example 2 were performed as follows. .
- the deposition material in the film formation 1 is the same as that in the second embodiment.
- a molybdenum board with an opening diameter of lmm, a wall pressure of 0.5mm and a depth of 10mm was used instead of a graphite crucible with an opening diameter of 25mm, a wall pressure of 1.6mm and a depth of 70mm.
- a device 1 (one perpendicular to the vapor deposition source) having a light-emitting area of 4 ⁇ 8 mm and a device 2 (one near the center of the device 1 by 10 cm) were obtained.
- Thickness and thickness difference Table 2 summarizes the luminous efficiency, the difference between the luminous efficiencies, and the rate of change. Table 2
- Tables 2 and 3 show that the organic EL device obtained by the non-rotational evaporation method of Example 2 in which the ni value at the time of forming the organic layer was controlled had a rate of change in film thickness even at a distance of 10 cm. It is less than 5%, and the change in luminous efficiency is 1%.
- the organic EL device obtained by the non-rotational vapor deposition method of Comparative Example 2 in which the ni value of film formation 1 was 4.82 the film thickness change rate was 10% or more, and the luminous efficiency was Was about 30%. Therefore, when the ni value is controlled to form a multi-layer structure, variations in the film thickness and luminous efficiency at each position on the deposition substrate are small, and a uniform device can be obtained.
- a uniform thin film can be formed even on a large-screen deposition substrate, and the uniformity is high.
- a change in film thickness at each position is small, and when a plurality of evaporation sources are co-evaporated, a film having a small change in concentration of each evaporation material at each position on an evaporation substrate can be obtained.
- an organic EL device manufactured using such a method of forming a thin film layer for a device is a homogeneous device in which the variation in light emission performance at each position in the device is small.
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Description
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EP01915818A EP1197576A4 (en) | 2000-03-30 | 2001-03-27 | METHOD FOR FORMING A THIN LAYER FOR AN ORGANIC ELECTROLUMINESCENCE DEVICE AND DEVICE |
US09/959,655 US6649210B2 (en) | 2000-03-30 | 2001-03-27 | Method for forming thin-film layer for device and organic electroluminescence device |
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- 2001-03-27 KR KR1020017015333A patent/KR100776101B1/ko not_active IP Right Cessation
- 2001-03-27 CN CNB018007813A patent/CN1271238C/zh not_active Expired - Fee Related
- 2001-03-27 EP EP01915818A patent/EP1197576A4/en not_active Withdrawn
- 2001-03-27 WO PCT/JP2001/002455 patent/WO2001079581A1/ja active Application Filing
- 2001-03-28 TW TW090107373A patent/TW580844B/zh not_active IP Right Cessation
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Cited By (12)
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US8968823B2 (en) | 1999-12-27 | 2015-03-03 | Semiconductor Energy Laboratory Co., Ltd. | Method of manufacturing a light emitting device |
US9559302B2 (en) | 1999-12-27 | 2017-01-31 | Semiconductor Energy Laboratory Co., Ltd. | Method of manufacturing a display device |
US8815331B2 (en) | 2000-05-02 | 2014-08-26 | Semiconductor Energy Laboratory Co., Ltd. | Film-forming apparatus, method of cleaning the same, and method of manufacturing a light-emitting device |
EP1369499A3 (en) * | 2002-04-15 | 2004-10-20 | Semiconductor Energy Laboratory Co., Ltd. | Method of fabricating light-emitting device and apparatus for manufacturing light-emitting device |
US20130143345A1 (en) * | 2002-04-15 | 2013-06-06 | Semiconductor Energy Laboratory Co., Ltd. | Method of Fabricating Light-Emitting Device and Apparatus for Manufacturing Light-Emitting Device |
US9209427B2 (en) * | 2002-04-15 | 2015-12-08 | Semiconductor Energy Laboratory Co., Ltd. | Method of fabricating light-emitting device and apparatus for manufacturing light-emitting device |
US7943443B2 (en) | 2002-09-20 | 2011-05-17 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing method of light-emitting device |
US8168483B2 (en) | 2002-09-20 | 2012-05-01 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing method for light emitting device |
US8377764B2 (en) | 2002-09-20 | 2013-02-19 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing method for light emitting device |
US8609476B2 (en) | 2002-09-20 | 2013-12-17 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing method of light emitting device |
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EP1418250A3 (en) * | 2002-10-21 | 2006-02-08 | Tohoku Pioneer Corporation | Vacuum evaporator |
Also Published As
Publication number | Publication date |
---|---|
CN1271238C (zh) | 2006-08-23 |
TW580844B (en) | 2004-03-21 |
EP1197576A4 (en) | 2006-08-09 |
JP2001279429A (ja) | 2001-10-10 |
US6649210B2 (en) | 2003-11-18 |
KR20020025877A (ko) | 2002-04-04 |
US6995507B2 (en) | 2006-02-07 |
US20020192499A1 (en) | 2002-12-19 |
WO2001079581A8 (fr) | 2002-02-14 |
EP1197576A1 (en) | 2002-04-17 |
US20040096694A1 (en) | 2004-05-20 |
KR100776101B1 (ko) | 2007-11-16 |
CN1366561A (zh) | 2002-08-28 |
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