JP5584702B2 - 有機電界発光素子 - Google Patents
有機電界発光素子 Download PDFInfo
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- JP5584702B2 JP5584702B2 JP2011547574A JP2011547574A JP5584702B2 JP 5584702 B2 JP5584702 B2 JP 5584702B2 JP 2011547574 A JP2011547574 A JP 2011547574A JP 2011547574 A JP2011547574 A JP 2011547574A JP 5584702 B2 JP5584702 B2 JP 5584702B2
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- 238000005401 electroluminescence Methods 0.000 title description 2
- 239000010410 layer Substances 0.000 claims description 143
- 125000003118 aryl group Chemical group 0.000 claims description 77
- 125000004432 carbon atom Chemical group C* 0.000 claims description 71
- UJOBWOGCFQCDNV-UHFFFAOYSA-N Carbazole Natural products C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 claims description 68
- -1 carbazole compound Chemical class 0.000 claims description 52
- 125000001424 substituent group Chemical group 0.000 claims description 37
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims description 33
- 239000012044 organic layer Substances 0.000 claims description 25
- 125000000217 alkyl group Chemical group 0.000 claims description 23
- 229910052739 hydrogen Inorganic materials 0.000 claims description 22
- 239000001257 hydrogen Substances 0.000 claims description 22
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 20
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 19
- 239000002019 doping agent Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 150000001491 aromatic compounds Chemical class 0.000 claims description 5
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 5
- 239000000463 material Substances 0.000 description 80
- 150000001875 compounds Chemical class 0.000 description 48
- 239000000203 mixture Substances 0.000 description 45
- 239000007787 solid Substances 0.000 description 44
- 239000000243 solution Substances 0.000 description 35
- 238000006243 chemical reaction Methods 0.000 description 27
- 238000002347 injection Methods 0.000 description 24
- 239000007924 injection Substances 0.000 description 24
- 239000012299 nitrogen atmosphere Substances 0.000 description 24
- 230000000903 blocking effect Effects 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 21
- 239000002904 solvent Substances 0.000 description 21
- 238000001914 filtration Methods 0.000 description 20
- 230000005525 hole transport Effects 0.000 description 19
- 238000003756 stirring Methods 0.000 description 19
- 239000012153 distilled water Substances 0.000 description 18
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 18
- 230000015572 biosynthetic process Effects 0.000 description 17
- 238000010898 silica gel chromatography Methods 0.000 description 17
- 238000003786 synthesis reaction Methods 0.000 description 17
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 15
- 238000001816 cooling Methods 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 15
- 238000005160 1H NMR spectroscopy Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 14
- 150000002431 hydrogen Chemical class 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical class CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 13
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 13
- 238000005259 measurement Methods 0.000 description 11
- 239000000725 suspension Substances 0.000 description 11
- 239000013078 crystal Substances 0.000 description 10
- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 150000001716 carbazoles Chemical class 0.000 description 9
- GBRBMTNGQBKBQE-UHFFFAOYSA-L copper;diiodide Chemical compound I[Cu]I GBRBMTNGQBKBQE-UHFFFAOYSA-L 0.000 description 9
- 229910000404 tripotassium phosphate Inorganic materials 0.000 description 9
- 235000019798 tripotassium phosphate Nutrition 0.000 description 9
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 8
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 8
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 8
- 239000011777 magnesium Substances 0.000 description 8
- 229910052749 magnesium Inorganic materials 0.000 description 8
- 125000001624 naphthyl group Chemical group 0.000 description 8
- SSJXIUAHEKJCMH-PHDIDXHHSA-N (1r,2r)-cyclohexane-1,2-diamine Chemical compound N[C@@H]1CCCC[C@H]1N SSJXIUAHEKJCMH-PHDIDXHHSA-N 0.000 description 7
- 239000007772 electrode material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000004776 molecular orbital Methods 0.000 description 7
- 238000001269 time-of-flight mass spectrometry Methods 0.000 description 7
- 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 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 6
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 6
- 125000003545 alkoxy group Chemical group 0.000 description 6
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- GDUANFXPOZTYKS-UHFFFAOYSA-N 6-bromo-8-[(2,6-difluoro-4-methoxybenzoyl)amino]-4-oxochromene-2-carboxylic acid Chemical compound FC1=CC(OC)=CC(F)=C1C(=O)NC1=CC(Br)=CC2=C1OC(C(O)=O)=CC2=O GDUANFXPOZTYKS-UHFFFAOYSA-N 0.000 description 5
- 0 C**=*C(NC(C(C)=C)=***=**)=C(*)*C Chemical compound C**=*C(NC(C(C)=C)=***=**)=C(*)*C 0.000 description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 5
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 5
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 5
- LNUFLCYMSVYYNW-ZPJMAFJPSA-N [(2r,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6r)-6-[(2r,3r,4s,5r,6r)-6-[(2r,3r,4s,5r,6r)-6-[[(3s,5s,8r,9s,10s,13r,14s,17r)-10,13-dimethyl-17-[(2r)-6-methylheptan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-3-yl]oxy]-4,5-disulfo Chemical compound O([C@@H]1[C@@H](COS(O)(=O)=O)O[C@@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1[C@@H](COS(O)(=O)=O)O[C@@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1[C@@H](COS(O)(=O)=O)O[C@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1C[C@@H]2CC[C@H]3[C@@H]4CC[C@@H]([C@]4(CC[C@@H]3[C@@]2(C)CC1)C)[C@H](C)CCCC(C)C)[C@H]1O[C@H](COS(O)(=O)=O)[C@@H](OS(O)(=O)=O)[C@H](OS(O)(=O)=O)[C@H]1OS(O)(=O)=O LNUFLCYMSVYYNW-ZPJMAFJPSA-N 0.000 description 5
- 238000000295 emission spectrum Methods 0.000 description 5
- 125000001072 heteroaryl group Chemical group 0.000 description 5
- 125000005956 isoquinolyl group Chemical group 0.000 description 5
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 5
- 235000019341 magnesium sulphate Nutrition 0.000 description 5
- YGBMCLDVRUGXOV-UHFFFAOYSA-N n-[6-[6-chloro-5-[(4-fluorophenyl)sulfonylamino]pyridin-3-yl]-1,3-benzothiazol-2-yl]acetamide Chemical compound C1=C2SC(NC(=O)C)=NC2=CC=C1C(C=1)=CN=C(Cl)C=1NS(=O)(=O)C1=CC=C(F)C=C1 YGBMCLDVRUGXOV-UHFFFAOYSA-N 0.000 description 5
- 125000005493 quinolyl group Chemical group 0.000 description 5
- 239000012312 sodium hydride Substances 0.000 description 5
- 229910000104 sodium hydride Inorganic materials 0.000 description 5
- 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 5
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- DZBUGLKDJFMEHC-UHFFFAOYSA-N acridine Chemical compound C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 description 4
- 229940125904 compound 1 Drugs 0.000 description 4
- 229940125782 compound 2 Drugs 0.000 description 4
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 4
- IYYZUPMFVPLQIF-UHFFFAOYSA-N dibenzothiophene Chemical compound C1=CC=C2C3=CC=CC=C3SC2=C1 IYYZUPMFVPLQIF-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 229910052741 iridium Inorganic materials 0.000 description 4
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 4
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 description 4
- 150000004866 oxadiazoles Chemical class 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 4
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 4
- HXITXNWTGFUOAU-UHFFFAOYSA-N phenylboronic acid Chemical compound OB(O)C1=CC=CC=C1 HXITXNWTGFUOAU-UHFFFAOYSA-N 0.000 description 4
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 4
- XSCHRSMBECNVNS-UHFFFAOYSA-N quinoxaline Chemical compound N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 4
- 238000005215 recombination Methods 0.000 description 4
- 230000006798 recombination Effects 0.000 description 4
- 229930192474 thiophene Natural products 0.000 description 4
- GPYDMVZCPRONLW-UHFFFAOYSA-N 1-iodo-4-(4-iodophenyl)benzene Chemical group C1=CC(I)=CC=C1C1=CC=C(I)C=C1 GPYDMVZCPRONLW-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000021615 conjugation Effects 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 125000002524 organometallic group Chemical group 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 125000004076 pyridyl group Chemical group 0.000 description 3
- 125000000714 pyrimidinyl group Chemical group 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- WWTBZEKOSBFBEM-SPWPXUSOSA-N (2s)-2-[[2-benzyl-3-[hydroxy-[(1r)-2-phenyl-1-(phenylmethoxycarbonylamino)ethyl]phosphoryl]propanoyl]amino]-3-(1h-indol-3-yl)propanoic acid Chemical compound N([C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)O)C(=O)C(CP(O)(=O)[C@H](CC=1C=CC=CC=1)NC(=O)OCC=1C=CC=CC=1)CC1=CC=CC=C1 WWTBZEKOSBFBEM-SPWPXUSOSA-N 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 2
- FLBAYUMRQUHISI-UHFFFAOYSA-N 1,8-naphthyridine Chemical compound N1=CC=CC2=CC=CN=C21 FLBAYUMRQUHISI-UHFFFAOYSA-N 0.000 description 2
- VERMWGQSKPXSPZ-BUHFOSPRSA-N 1-[(e)-2-phenylethenyl]anthracene Chemical class C=1C=CC2=CC3=CC=CC=C3C=C2C=1\C=C\C1=CC=CC=C1 VERMWGQSKPXSPZ-BUHFOSPRSA-N 0.000 description 2
- ZHFLRRPGAVPNMB-UHFFFAOYSA-N 1-[3-(9h-carbazol-1-yl)phenyl]-9h-carbazole Chemical compound C12=CC=CC=C2NC2=C1C=CC=C2C1=CC(C2=C3NC=4C(C3=CC=C2)=CC=CC=4)=CC=C1 ZHFLRRPGAVPNMB-UHFFFAOYSA-N 0.000 description 2
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 description 2
- TZMSYXZUNZXBOL-UHFFFAOYSA-N 10H-phenoxazine Chemical compound C1=CC=C2NC3=CC=CC=C3OC2=C1 TZMSYXZUNZXBOL-UHFFFAOYSA-N 0.000 description 2
- MVWPVABZQQJTPL-UHFFFAOYSA-N 2,3-diphenylcyclohexa-2,5-diene-1,4-dione Chemical class O=C1C=CC(=O)C(C=2C=CC=CC=2)=C1C1=CC=CC=C1 MVWPVABZQQJTPL-UHFFFAOYSA-N 0.000 description 2
- QEBYEVQKHRUYPE-UHFFFAOYSA-N 2-(2-chlorophenyl)-5-[(1-methylpyrazol-3-yl)methyl]-4-[[methyl(pyridin-3-ylmethyl)amino]methyl]-1h-pyrazolo[4,3-c]pyridine-3,6-dione Chemical compound C1=CN(C)N=C1CN1C(=O)C=C2NN(C=3C(=CC=CC=3)Cl)C(=O)C2=C1CN(C)CC1=CC=CN=C1 QEBYEVQKHRUYPE-UHFFFAOYSA-N 0.000 description 2
- FMKGJQHNYMWDFJ-CVEARBPZSA-N 2-[[4-(2,2-difluoropropoxy)pyrimidin-5-yl]methylamino]-4-[[(1R,4S)-4-hydroxy-3,3-dimethylcyclohexyl]amino]pyrimidine-5-carbonitrile Chemical compound FC(COC1=NC=NC=C1CNC1=NC=C(C(=N1)N[C@H]1CC([C@H](CC1)O)(C)C)C#N)(C)F FMKGJQHNYMWDFJ-CVEARBPZSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 238000004057 DFT-B3LYP calculation Methods 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 150000008425 anthrones Chemical class 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- 150000004984 aromatic diamines Chemical class 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- RFRXIWQYSOIBDI-UHFFFAOYSA-N benzarone Chemical compound CCC=1OC2=CC=CC=C2C=1C(=O)C1=CC=C(O)C=C1 RFRXIWQYSOIBDI-UHFFFAOYSA-N 0.000 description 2
- 229940126208 compound 22 Drugs 0.000 description 2
- 229940127113 compound 57 Drugs 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 2
- RMBPEFMHABBEKP-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2C3=C[CH]C=CC3=CC2=C1 RMBPEFMHABBEKP-UHFFFAOYSA-N 0.000 description 2
- 150000008376 fluorenones Chemical class 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 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 2
- 229940083761 high-ceiling diuretics pyrazolone derivative Drugs 0.000 description 2
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000002950 monocyclic group Chemical group 0.000 description 1
- KKFHAJHLJHVUDM-UHFFFAOYSA-N n-vinylcarbazole Chemical class C1=CC=C2N(C=C)C3=CC=CC=C3C2=C1 KKFHAJHLJHVUDM-UHFFFAOYSA-N 0.000 description 1
- AODWRBPUCXIRKB-UHFFFAOYSA-N naphthalene perylene Chemical group C1=CC=CC2=CC=CC=C21.C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 AODWRBPUCXIRKB-UHFFFAOYSA-N 0.000 description 1
- LAIZPRYFQUWUBN-UHFFFAOYSA-L nickel chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Ni+2] LAIZPRYFQUWUBN-UHFFFAOYSA-L 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical group C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 1
- AICOOMRHRUFYCM-ZRRPKQBOSA-N oxazine, 1 Chemical compound C([C@@H]1[C@H](C(C[C@]2(C)[C@@H]([C@H](C)N(C)C)[C@H](O)C[C@]21C)=O)CC1=CC2)C[C@H]1[C@@]1(C)[C@H]2N=C(C(C)C)OC1 AICOOMRHRUFYCM-ZRRPKQBOSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- SIOXPEMLGUPBBT-UHFFFAOYSA-M picolinate Chemical compound [O-]C(=O)C1=CC=CC=N1 SIOXPEMLGUPBBT-UHFFFAOYSA-M 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Chemical class 0.000 description 1
- 229920000553 poly(phenylenevinylene) Polymers 0.000 description 1
- 229920000548 poly(silane) polymer Chemical class 0.000 description 1
- 229920002098 polyfluorene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical class C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 150000003252 quinoxalines Chemical class 0.000 description 1
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- WLPUWLXVBWGYMZ-UHFFFAOYSA-N tricyclohexylphosphine Chemical compound C1CCCCC1P(C1CCCCC1)C1CCCCC1 WLPUWLXVBWGYMZ-UHFFFAOYSA-N 0.000 description 1
- ZHXAZZQXWJJBHA-UHFFFAOYSA-N triphenylbismuthane Chemical compound C1=CC=CC=C1[Bi](C=1C=CC=CC=1)C1=CC=CC=C1 ZHXAZZQXWJJBHA-UHFFFAOYSA-N 0.000 description 1
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Description
本発明の有機EL素子は、基板に支持されていることが好ましい。この基板については、特に制限はなく、従来から有機EL素子に慣用されているものであればよく、例えば、ガラス、透明プラスチック、石英などからなるものを用いることができる。
有機EL素子における陽極としては、仕事関数の大きい(4eV以上)金属、合金、電気伝導性化合物及びこれらの混合物を電極物質とするものが好ましく用いられる。このような電極物質の具体例としてはAu等の金属、CuI、インジウムチンオキシド(ITO)、SnO2、ZnO等の導電性透明材料が挙げられる。また、IDIXO(In2O3−ZnO)等非晶質で透明導電膜を作製可能な材料を用いてもよい。陽極はこれらの電極物質を蒸着やスパッタリング等の方法により、薄膜を形成させ、フォトリソグラフィー法で所望の形状のパターンを形成してもよく、あるいはパターン精度をあまり必要としない場合は(100μm以上程度)、上記電極物質の蒸着やスパッタリング時に所望の形状のマスクを介してパターンを形成してもよい。あるいは、有機導電性化合物のように塗布可能な物質を用いる場合には、印刷方式、コーティング方式等湿式成膜法を用いることもできる。この陽極より発光を取り出す場合には、透過率を10%より大きくすることが望ましく、また陽極としてのシート抵抗は数百Ω/□以下が好ましい。更に膜厚は材料にもよるが、通常10〜1000nm、好ましくは10〜200nmの範囲で選ばれる。
一方、陰極としては、仕事関数の小さい(4eV以下)金属(電子注入性金属と称する)、合金、電気伝導性化合物及びこれらの混合物を電極物質とするものが用いられる。このような電極物質の具体例としては、ナトリウム、ナトリウム−カリウム合金、マグネシウム、リチウム、マグネシウム/銅混合物、マグネシウム/銀混合物、マグネシウム/アルミニウム混合物、マグネシウム/インジウム混合物、アルミニウム/酸化アルミニウム(Al2O3)混合物、インジウム、リチウム/アルミニウム混合物、希土類金属等が挙げられる。これらの中で、電子注入性及び酸化等に対する耐久性の点から、電子注入性金属とこれより仕事関数の値が大きく安定な金属である第二金属との混合物、例えば、マグネシウム/銀混合物、マグネシウム/アルミニウム混合物、マグネシウム/インジウム混合物、アルミニウム/酸化アルミニウム(Al2O3)混合物、リチウム/アルミニウム混合物、アルミニウム等が好適である。陰極はこれらの電極物質を蒸着やスパッタリング等の方法により薄膜を形成させることにより、作製することができる。また、陰極としてのシート抵抗は数百Ω/□以下が好ましく、膜厚は通常10nm〜5μm、好ましくは50〜200nmの範囲で選ばれる。なお、発光した光を透過させるため、有機EL素子の陽極又は陰極のいずれか一方が、透明又は半透明であれば発光輝度が向上し好都合である。
発光層は燐光発光層であり、燐光発光ドーパントとホスト材料を含む。燐光発光ドーパント材料としては、ルテニウム、ロジウム、パラジウム、銀、レニウム、オスミウム、イリジウム、白金及び金から選ばれる少なくとも1つの金属を含む有機金属錯体を含有するものがよい。かかる有機金属錯体は、前記先行技術文献等で公知であり、これらが選択されて使用可能である。燐光発光ドーパントの発光波長は550nm以下に発光極大波長を有することが望ましい。
注入層とは、駆動電圧低下や発光輝度向上のために電極と有機層間に設けられる層のことで、正孔注入層と電子注入層があり、陽極と発光層又は正孔輸送層の間、及び陰極と発光層又は電子輸送層との間に存在させてもよい。注入層は必要に応じて設けることができる。
正孔阻止層とは広い意味では電子輸送層の機能を有し、電子を輸送する機能を有しつつ正孔を輸送する能力が著しく小さい正孔阻止材料からなり、電子を輸送しつつ正孔を阻止することで電子と正孔の再結合確率を向上させることができる。
電子阻止層とは、正孔を輸送する機能を有しつつ電子を輸送する能力が著しく小さい材料から成り、正孔を輸送しつつ電子を阻止することで電子と正孔が再結合する確率を向上させることができる。
励起子阻止層とは、発光層内で正孔と電子が再結合することにより生じた励起子が電荷輸送層に拡散することを阻止するための層であり、本層の挿入により励起子を効率的に発光層内に閉じ込めることが可能となり、素子の発光効率を向上させることができる。励起子阻止層は発光層に隣接して陽極側、陰極側のいずれにも挿入することができ、両方同時に挿入することも可能である。
正孔輸送層とは正孔を輸送する機能を有する正孔輸送材料からなり、正孔輸送層は単層又は複数層設けることができる。
電子輸送層とは電子を輸送する機能を有する材料からなり、電子輸送層は単層又は複数層設けることができる。
化合物2の合成
APCI-TOFMS, m/z 739 [M+H]+ 、1H-NMR測定結果(測定溶媒:CD2Cl2)を図3に示す。
化合物18の合成。
化合物82の合成
化合物83の合成
化合物H−1の合成
APCI-TOFMS, m/z 637 [M+H]+ 、1H-NMR測定結果(測定溶媒:THF-d8)を図7
に示す。
化合物H−2の合成
膜厚 110 nm の 酸化インジウムスズ(ITO)からなる陽極が形成されたガラス基板上に、各薄膜を真空蒸着法にて、真空度2.0×10-5 Pa で積層させた。まず、ITO 上に正孔注入層として、銅フタロシアニン(CuPC)を 25 nm の厚さに形成した。次に、正孔輸送層としてN,N−ジ(ナフタレン−1−イル)−N,N−ジフェニル−ベンジデン(NPB)を 90 nm の厚さに形成した。次に、正孔輸送層上に、発光層のホスト材料としての化合物1とドーパントとしての青色燐光材料であるイリジウム錯体[イリジウム(III)ビス(4,6-ジ-フルオロフェニル)-ピリジネート-N,C2']ピコリネート](FIrpic)とを異なる蒸着源から、共蒸着し、30 nm の厚さに発光層を形成した。FIrpicの濃度は 10 %であった。次に、電子輸送層として Alq3 を 30 nm厚さに形成した。更に、電子輸送層上に、電子注入層としてフッ化リチウム(LiF)を 1.0 nm厚さに形成した。最後に、電子注入層上に、電極としてアルミニウム(Al)を70 nm厚さに形成した。得られた有機EL素子は、図1に示す有機EL素子において、陰極と電子輸送層の間に、電子注入層が追加された層構成を有する。
実施例1における発光層のホスト材料として、化合物2を用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、化合物4を用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、化合物18を用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、化合物22を用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、化合物57を用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、化合物82を用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、化合物83を用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、化合物87を用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、CBPを用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、化合物H−1を用いた以外は実施例1と同様にして有機EL素子を作成した。
実施例1における発光層のホスト材料として、化合物H−2を用いた以外は実施例1と同様にして有機EL素子を作成した。
膜厚110nmのITO基板からなる陽極が形成されたガラス基板上に、各薄膜を真空蒸着法にて、真空度2.0×10-5 Paで積層させた。まず、ITO上に正孔注入層として、銅フタロシアニン(CuPC)を 25 nm の厚さに形成した。次に、正孔輸送層としてNPBを40 nmの厚さに形成した。次に、正孔輸送層上に、ホスト材料としての化合物1とドーパントとしてのIr(ppy)3とを異なる蒸着源から、共蒸着し、40nmの厚さに発光層を形成した。この時、Ir(ppy)3の濃度は10 wt%であった。次に、電子輸送層としてAlq3を20nmの厚さに形成した。更に、電子輸送層上に、電子注入層としてフッ化リチウム(LiF)を1nmの厚さに形成した。最後に、電子注入層上に、電極としてアルミニウム(Al)を70nmの厚さに形成し、有機EL素子を作製した。
実施例10における発光層のホスト材料として、化合物2を用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料として、化合物4を用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料として化合物18を用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料として化合物22を用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料として化合物57を用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料として化合物82を用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料として化合物83を用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料として化合物87を用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料としてCBPを用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料として化合物H−1を用いた以外は実施例10と同様にして有機EL素子を作成した。
実施例10における発光層のホスト材料として化合物H−2を用いた以外は実施例10と同様にして有機EL素子を作成した。
Claims (6)
- 基板上に、陽極、複数の有機層及び陰極が積層されてなる有機電界発光素子において、カルバゾール環の1位及び9位に芳香族炭化水素基及び芳香族複素環基から選ばれる芳香族基を置換基として有し、該芳香族基の少なくとも一方が2環以上の環から形成される縮環構造を有し、総炭素数20〜80のカルバゾール化合物を含む有機層を有すること、及びカルバゾール化合物を含む有機層が、燐光発光ドーパントを含有する発光層であることを特徴とする有機電界発光素子。
- カルバゾール化合物が、一般式(1)又は(2)で表される請求項1に記載の有機電界発光素子。
一般式(1)及び(2)中、Arはそれぞれ独立して炭素数6〜24の芳香族炭化水素基及び炭素数3〜23の芳香族複素環基から選ばれる芳香族基を表し、Lは炭素数6〜30の芳香族炭化水素基及び炭素数3〜30の芳香族複素環基から選ばれる芳香族基を表し、R1〜R3はそれぞれ独立して水素、炭素数1〜10のアルキル基、炭素数3〜11のシクロアルキル基、炭素数6〜18の芳香族炭化水素基又は炭素数3〜17の芳香族複素環基を表し、nは1〜3の整数を表す。nが2以上の場合、複数のAr及びR1〜R3はそれぞれ同一であっても異なっていても良い。ただし、Ar及びLのうち少なくとも1つは2環以上の環から形成される縮環構造の芳香族基である。 - 一般式(3)において、Zが直接結合である請求項3に記載の有機電界発光素子。
- 燐光発光ドーパントの発光波長が550nm以下に発光極大波長を有する請求項1に記載の有機電界発光素子。
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