JP2005158676A - フールカラー有機電界発光素子 - Google Patents
フールカラー有機電界発光素子 Download PDFInfo
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- JP2005158676A JP2005158676A JP2004109132A JP2004109132A JP2005158676A JP 2005158676 A JP2005158676 A JP 2005158676A JP 2004109132 A JP2004109132 A JP 2004109132A JP 2004109132 A JP2004109132 A JP 2004109132A JP 2005158676 A JP2005158676 A JP 2005158676A
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- 230000001629 suppression Effects 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 58
- 229920000642 polymer Polymers 0.000 claims description 18
- 239000002019 doping agent Substances 0.000 claims description 13
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims description 9
- 238000001771 vacuum deposition Methods 0.000 claims description 8
- 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 claims description 7
- NGQSLSMAEVWNPU-YTEMWHBBSA-N 1,2-bis[(e)-2-phenylethenyl]benzene Chemical compound C=1C=CC=CC=1/C=C/C1=CC=CC=C1\C=C\C1=CC=CC=C1 NGQSLSMAEVWNPU-YTEMWHBBSA-N 0.000 claims description 6
- 239000011368 organic material Substances 0.000 claims description 6
- 238000005401 electroluminescence Methods 0.000 claims description 5
- NDBCGHNTWCYIIU-UHFFFAOYSA-N iridium(3+);1-phenylisoquinoline Chemical compound [Ir+3].[C-]1=CC=CC=C1C1=NC=CC2=CC=CC=C12.[C-]1=CC=CC=C1C1=NC=CC2=CC=CC=C12.[C-]1=CC=CC=C1C1=NC=CC2=CC=CC=C12 NDBCGHNTWCYIIU-UHFFFAOYSA-N 0.000 claims description 5
- 238000004528 spin coating Methods 0.000 claims description 5
- 239000007983 Tris buffer Substances 0.000 claims description 4
- 229910052741 iridium Inorganic materials 0.000 claims description 4
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 4
- UHXOHPVVEHBKKT-UHFFFAOYSA-N 1-(2,2-diphenylethenyl)-4-[4-(2,2-diphenylethenyl)phenyl]benzene Chemical compound C=1C=C(C=2C=CC(C=C(C=3C=CC=CC=3)C=3C=CC=CC=3)=CC=2)C=CC=1C=C(C=1C=CC=CC=1)C1=CC=CC=C1 UHXOHPVVEHBKKT-UHFFFAOYSA-N 0.000 claims description 3
- FCYVNFAUBXIDBR-UHFFFAOYSA-N 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline Chemical group CC1=NC2=C3N=C(C=C(C3=CC=C2C(=C1)C1=CC=CC=C1)C1=CC=CC=C1)C.CC1=NC2=C3N=C(C=C(C3=CC=C2C(=C1)C1=CC=CC=C1)C1=CC=CC=C1)C FCYVNFAUBXIDBR-UHFFFAOYSA-N 0.000 claims description 3
- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 claims description 3
- IERDDDBDINUYCD-UHFFFAOYSA-N 1-[4-[4-(9h-carbazol-1-yl)phenyl]phenyl]-9h-carbazole Chemical group C12=CC=CC=C2NC2=C1C=CC=C2C(C=C1)=CC=C1C(C=C1)=CC=C1C1=C2NC3=CC=CC=C3C2=CC=C1 IERDDDBDINUYCD-UHFFFAOYSA-N 0.000 claims description 2
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 claims description 2
- 238000004770 highest occupied molecular orbital Methods 0.000 claims 2
- ZMLPKJYZRQZLDA-UHFFFAOYSA-N 1-(2-phenylethenyl)-4-[4-(2-phenylethenyl)phenyl]benzene Chemical group C=1C=CC=CC=1C=CC(C=C1)=CC=C1C(C=C1)=CC=C1C=CC1=CC=CC=C1 ZMLPKJYZRQZLDA-UHFFFAOYSA-N 0.000 claims 1
- JZRYQZJSTWVBBD-UHFFFAOYSA-N pentaporphyrin i Chemical compound N1C(C=C2NC(=CC3=NC(=C4)C=C3)C=C2)=CC=C1C=C1C=CC4=N1 JZRYQZJSTWVBBD-UHFFFAOYSA-N 0.000 claims 1
- HRGDZIGMBDGFTC-UHFFFAOYSA-N platinum(2+) Chemical compound [Pt+2] HRGDZIGMBDGFTC-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 172
- 238000002347 injection Methods 0.000 description 20
- 239000007924 injection Substances 0.000 description 20
- 230000005525 hole transport Effects 0.000 description 12
- 230000002401 inhibitory effect Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- VFUDMQLBKNMONU-UHFFFAOYSA-N 9-[4-(4-carbazol-9-ylphenyl)phenyl]carbazole Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 VFUDMQLBKNMONU-UHFFFAOYSA-N 0.000 description 8
- -1 (2-methylphenyl-phenyl) triphenyl-amine Chemical compound 0.000 description 4
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- FARHYDJOXLCMRP-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]pyrazol-3-yl]oxyacetic acid Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C(=NN(C=1)CC(N1CC2=C(CC1)NN=N2)=O)OCC(=O)O FARHYDJOXLCMRP-UHFFFAOYSA-N 0.000 description 3
- YXVFYQXJAXKLAK-UHFFFAOYSA-M 4-phenylphenolate Chemical compound C1=CC([O-])=CC=C1C1=CC=CC=C1 YXVFYQXJAXKLAK-UHFFFAOYSA-M 0.000 description 3
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 3
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 description 2
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 2
- 229920000767 polyaniline Polymers 0.000 description 2
- PZWLRLIAVLSBQU-UHFFFAOYSA-N 1,2-dioctyl-9h-fluorene Chemical compound C1=CC=C2C3=CC=C(CCCCCCCC)C(CCCCCCCC)=C3CC2=C1 PZWLRLIAVLSBQU-UHFFFAOYSA-N 0.000 description 1
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 1
- RKVIAZWOECXCCM-UHFFFAOYSA-N 2-carbazol-9-yl-n,n-diphenylaniline Chemical compound C1=CC=CC=C1N(C=1C(=CC=CC=1)N1C2=CC=CC=C2C2=CC=CC=C21)C1=CC=CC=C1 RKVIAZWOECXCCM-UHFFFAOYSA-N 0.000 description 1
- GMEQIEASMOFEOC-UHFFFAOYSA-N 4-[3,5-bis[4-(4-methoxy-n-(4-methoxyphenyl)anilino)phenyl]phenyl]-n,n-bis(4-methoxyphenyl)aniline Chemical compound C1=CC(OC)=CC=C1N(C=1C=CC(=CC=1)C=1C=C(C=C(C=1)C=1C=CC(=CC=1)N(C=1C=CC(OC)=CC=1)C=1C=CC(OC)=CC=1)C=1C=CC(=CC=1)N(C=1C=CC(OC)=CC=1)C=1C=CC(OC)=CC=1)C1=CC=C(OC)C=C1 GMEQIEASMOFEOC-UHFFFAOYSA-N 0.000 description 1
- AWXGSYPUMWKTBR-UHFFFAOYSA-N 4-carbazol-9-yl-n,n-bis(4-carbazol-9-ylphenyl)aniline Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(N(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 AWXGSYPUMWKTBR-UHFFFAOYSA-N 0.000 description 1
- BTEAMLUWLVUBFF-UHFFFAOYSA-N 5-(3-methylphenyl)-4-phenylcyclohexa-2,4-diene-1,1-diamine Chemical compound CC=1C=C(C=CC1)C1=C(C=CC(C1)(N)N)C1=CC=CC=C1 BTEAMLUWLVUBFF-UHFFFAOYSA-N 0.000 description 1
- 241000284156 Clerodendrum quadriloculare Species 0.000 description 1
- 101000837344 Homo sapiens T-cell leukemia translocation-altered gene protein Proteins 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 1
- 102100028692 T-cell leukemia translocation-altered gene protein Human genes 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].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 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 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
- 150000007857 hydrazones Chemical class 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004776 molecular orbital Methods 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- ORFSSYGWXNGVFB-UHFFFAOYSA-N sodium 4-amino-6-[[4-[4-[(8-amino-1-hydroxy-5,7-disulfonaphthalen-2-yl)diazenyl]-3-methoxyphenyl]-2-methoxyphenyl]diazenyl]-5-hydroxynaphthalene-1,3-disulfonic acid Chemical compound COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=C(C=C3)C(=CC(=C4N)S(=O)(=O)O)S(=O)(=O)O)O)OC)N=NC5=C(C6=C(C=C5)C(=CC(=C6N)S(=O)(=O)O)S(=O)(=O)O)O.[Na+] ORFSSYGWXNGVFB-UHFFFAOYSA-N 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
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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 radiating surfaces
- H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
-
- 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]
- H10K50/18—Carrier blocking layers
-
- 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
- H10K85/10—Organic polymers or oligomers
- H10K85/141—Organic polymers or oligomers comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE
- H10K85/146—Organic polymers or oligomers comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE poly N-vinylcarbazol; Derivatives thereof
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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
- H10K85/30—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
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
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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
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
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Abstract
【解決手段】基板10と,基板上に形成されている第1電極12と,第1電極上に形成されており,赤色画素領域,緑色画素領域および青色画素領域の各画素領域別にパターニングされて,それぞれ赤色発光層100,緑色発光層200および青色発光層300’を形成し,赤色発光層および緑色発光層は燐光発光物質で形成されて,青色発光層は蛍光発光物質で形成される有機発光層,有機発光層上部に共通層として形成される正孔抑制層20および正孔抑制層上部に形成されている第2電極24を備える。
【選択図】 図2
Description
青色蛍光発光素子の製造方法について説明する。80μmの幅にパターニングされたITO基板(第1電極)に超音波洗浄を経た後,15分間UV/O3処理をした。その後,低分子正孔注入層(IDE 406,出光社製造,HOMO 5.1eV)を8×10−7mbar Pa条件で600Åの厚さに真空蒸着して成膜した。続いて,低分子正孔輸送層(IDE 320,出光社製造,HOMO 5.4eV)を同一圧力条件で300Å厚さに蒸着した。青色蛍光素子の発光層としてIDE 140(出光社製造,HOMO 5.7eV,LUMO 2.7eV)をホストで200Åの厚さに蒸着しながら,ドーパントとしてIDE 105(出光社製造,HOMO 5.4eV,LUMO 2.6eV)を7重量%の濃度に共蒸着した。
前記実験例1−2において,正孔抑制層としてBAlqの代わりにコビオン社のHBM010(PLmax:398/422nm)をそれぞれ50,100Å蒸着したことを除いては,実験例1−2と同一な方法でテストセルを完成した。
赤色燐光発光素子の製造方法について説明する。80μmの幅にパターニングされたITO基板(第1電極)に超音波洗浄を経た後,15分間UV/O3処理をした。その後,低分子正孔注入層(IDE 406,出光社製造,HOMO 5.1eV)を8×10−7mbar Pa条件で600Åの厚さに真空蒸着して成膜した。続いて,低分子正孔輸送層(IDE 320,出光社製造,HOMO 5.4eV)を同一圧力条件で300Å厚さに蒸着した。赤色燐光素子の発光層として4,4′−N,N′−ジカルバゾールビフェニル(CBP,UDC社製造)を300Åの厚さに真空蒸着しながら,ドーパントとしてPtOEP(UDC社製造)を10重量%に共蒸着した。
前記実験例6で赤色燐光発光素子上部に正孔抑制層を形成しないことを除いては,実験例6と同一な構造のテストセルを構成した。
緑色燐光発光素子の製造方法について説明する。80μmの幅にパターニングされたITO基板(第1電極)に超音波洗浄を経た後,15分間UV/O3処理をした。その後,低分子正孔注入層(IDE 406,出光社製造,HOMO 5.1eV)を8×10−7mbar Pa条件で600Åの厚さに真空蒸着して成膜した。続いて低分子正孔輸送層(IDE 320,出光社製造,HOMO 5.4eV)を同一圧力条件で300Å厚さに蒸着した。緑色燐光素子の発光層として,4,4′−N,N′−ジカルバゾールビフェニル(CBP,UDC社製造)を250Åの厚さに真空蒸着しながらドーパントとしてIr(ppy)3(UDC社製造)を7重量%に共蒸着した。
前記実験例10において,緑色燐光発光素子上部に正孔抑制層を形成しないことを除いては,実験例10と同一な構造のテストセルを構成した。
しかし,150Å積層された場合には,発光効率に大きい差は見られないが,輝度において,100Å積層された時よりほとんど30%以上輝度が減少することがわかる。また,正孔抑制層を全く用いない比較例1(赤色燐光発光物質使用)及び2(緑色燐光発光物質使用)では,20Å積層された時より輝度及び発光効率において相当な差で小さいことがわかる。
12:下部電極
14:絶縁膜
16:正孔注入層
18:正孔輸入層
20:正孔抑制層
22:電子輸送層
24:上部電極
100:赤色発光層
200:緑色発光層
300:青色発光層
300’:青色発光層
Claims (11)
- 基板と;
前記基板上に形成されている第1電極と;
前記第1電極上に形成されており,赤色画素領域,緑色画素領域および青色画素領域の各画素領域別にパターニングされて,それぞれ赤色発光層,緑色発光層および青色発光層を形成して,前記赤色発光層および緑色発光層は燐光発光物質で形成されて,前記青色発光層は蛍光発光物質で形成される有機発光層と;
前記有機発光層上部に共通層として形成される正孔抑制層と;
前記正孔抑制層上部に形成される第2電極と;
を含むことを特徴とするフールカラー有機電界発光素子。 - 前記正孔抑制層は,HOMO値が5.5〜6.9eVの有機物質であることを特徴とする,請求項1に記載のフールカラー有機電界発光素子。
- 前記正孔抑制層は,HOMO値が5.7〜6.7eVの有機物質であることを特徴とする,請求項2に記載のフールカラー有機電界発光素子。
- 前記有機物質は,2,9−ジメチル−4,7−ジフェニル−1,10−フェナントロリン(2,9−dimethyl−4,7−diphenyl−1,10−phenanthroline),アルミニウム(III)ビス(2−メチル−8−キノリナト)−4−フェニルフェノラート(Aluminum(III)bis(2−methyl−8−quinolinato)−4−phenylphenolate;BAlq),CF−X:C60F42およびCF−Y:C60F42で構成された群から選択される1種の物質であることを特徴とする,請求項2に記載のフールカラー有機電界発光素子。
- 前記正孔抑制層は,20〜150Åであることを特徴とする,請求項1または2に記載のフールカラー有機電界発光素子。
- 前記正孔抑制層は,40〜150Åであることを特徴とする,請求項5に記載のフールカラー有機電界発光素子。
- 前記赤色燐光発光物質は,CBP(4,4’−dicarbazolyl−1,1’−biphenyl)からなる発光材料にドーパントとしてPtOEP(2,3,7,8,12,13,17,18−オクタエチル−21H,23H−ポルフィン白金(II)),R7(登録商標),Ir(piq)3(Tris[1−phenylisoquinolinato−C2,N]iridium(III)))などをドーピングした燐光発光物質であって,前記緑色燐光発光物質は,CBPからなる発光材料にドーパントとしてIr(ppy)3(Tris[2−(2−ophyridinyl−C,N]iridium(III))をドーピングした燐光発光物質であることを特徴とする,請求項1に記載のフールカラー有機電界発光素子。
- 前記赤色燐光発光物質のドーパントの濃度は7〜15%であって,前記緑色燐光発光物質のドーパントの濃度は5〜10%であることを特徴とする,請求項7に記載のフールカラー有機電界発光素子。
- 前記青色蛍光発光物質は,低分子としてDPVBi(ジスチリルビフェニル),スピロ−DPVBi,スピロ−6P,ジスチリルベンゼン(DSB),及びジスチリルアリレン(DSA)で構成された群から選択される1種の物質,または高分子としてはPFO系高分子,またはPPV系高分子のうちいずれか一つであることを特徴とする,請求項1に記載のフールカラー有機電界発光素子。
- 前記赤色燐光発光層,緑色燐光発光層および青色蛍光発光層の厚さは,5〜50nmであることを特徴とする,請求項1に記載のフールカラー有機電界発光素子。
- 前記赤色燐光発光物質,緑色燐光発光物質及び青色蛍光発光物質は,真空蒸着,スピンコーティングおよびレーザー熱転写法で構成された群から選択される1種の方法で形成されるものであることを特徴とする,請求項1に記載のフールカラー有機電界発光素子。
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JP2010114429A (ja) * | 2008-10-10 | 2010-05-20 | Canon Inc | 表示装置 |
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US20050112403A1 (en) | 2005-05-26 |
CN100405631C (zh) | 2008-07-23 |
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