JP7315260B2 - 積層有機エレクトロルミネッセンス素子 - Google Patents
積層有機エレクトロルミネッセンス素子 Download PDFInfo
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- JP7315260B2 JP7315260B2 JP2022011034A JP2022011034A JP7315260B2 JP 7315260 B2 JP7315260 B2 JP 7315260B2 JP 2022011034 A JP2022011034 A JP 2022011034A JP 2022011034 A JP2022011034 A JP 2022011034A JP 7315260 B2 JP7315260 B2 JP 7315260B2
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- 238000005401 electroluminescence Methods 0.000 title claims description 38
- 239000010410 layer Substances 0.000 claims description 278
- 150000001875 compounds Chemical class 0.000 claims description 145
- -1 diphenylmethylsilyl group Chemical group 0.000 claims description 142
- 125000004432 carbon atom Chemical group C* 0.000 claims description 91
- 239000000463 material Substances 0.000 claims description 90
- 239000011368 organic material Substances 0.000 claims description 81
- 125000001424 substituent group Chemical group 0.000 claims description 72
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 claims description 57
- 239000012044 organic layer Substances 0.000 claims description 43
- 238000004770 highest occupied molecular orbital Methods 0.000 claims description 36
- 229910052751 metal Inorganic materials 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 35
- 125000006575 electron-withdrawing group Chemical group 0.000 claims description 28
- 229910052760 oxygen Inorganic materials 0.000 claims description 28
- 229910052717 sulfur Inorganic materials 0.000 claims description 27
- 125000003118 aryl group Chemical group 0.000 claims description 26
- 229910052711 selenium Inorganic materials 0.000 claims description 24
- 125000001072 heteroaryl group Chemical group 0.000 claims description 22
- 125000000217 alkyl group Chemical group 0.000 claims description 21
- 125000006413 ring segment Chemical group 0.000 claims description 15
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 13
- 125000003545 alkoxy group Chemical group 0.000 claims description 12
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 12
- 125000002462 isocyano group Chemical group *[N+]#[C-] 0.000 claims description 12
- 125000003342 alkenyl group Chemical group 0.000 claims description 11
- 125000001651 cyanato group Chemical group [*]OC#N 0.000 claims description 11
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N thiocyanic acid Chemical compound SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 claims description 11
- 125000002252 acyl group Chemical group 0.000 claims description 9
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 9
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 9
- 229910052736 halogen Inorganic materials 0.000 claims description 9
- 150000002367 halogens Chemical class 0.000 claims description 9
- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 claims description 9
- 125000004185 ester group Chemical group 0.000 claims description 8
- 229910052731 fluorine Inorganic materials 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 8
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 claims description 8
- HCMJWOGOISXSDL-UHFFFAOYSA-N (2-isothiocyanato-1-phenylethyl)benzene Chemical compound C=1C=CC=CC=1C(CN=C=S)C1=CC=CC=C1 HCMJWOGOISXSDL-UHFFFAOYSA-N 0.000 claims description 7
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 7
- 229910052805 deuterium Inorganic materials 0.000 claims description 7
- 125000005842 heteroatom Chemical group 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 6
- 125000000018 nitroso group Chemical group N(=O)* 0.000 claims description 6
- 125000000714 pyrimidinyl group Chemical group 0.000 claims description 6
- 125000004429 atom Chemical group 0.000 claims description 5
- 125000001300 boranyl group Chemical group [H]B([H])[*] 0.000 claims description 5
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 5
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 4
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 4
- 125000002373 5 membered heterocyclic group Chemical group 0.000 claims description 3
- 125000006267 biphenyl group Chemical group 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- OBSLLHNATPQFMJ-UHFFFAOYSA-N 2,4-Dimethylthiazole Chemical group CC1=CSC(C)=N1 OBSLLHNATPQFMJ-UHFFFAOYSA-N 0.000 claims description 2
- 125000000590 4-methylphenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 claims description 2
- 125000000732 arylene group Chemical group 0.000 claims description 2
- 125000005549 heteroarylene group Chemical group 0.000 claims description 2
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- 238000002347 injection Methods 0.000 description 47
- 239000007924 injection Substances 0.000 description 47
- 230000005525 hole transport Effects 0.000 description 45
- 230000000052 comparative effect Effects 0.000 description 38
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 23
- 239000000758 substrate Substances 0.000 description 21
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 14
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- 125000004404 heteroalkyl group Chemical group 0.000 description 12
- 125000003710 aryl alkyl group Chemical group 0.000 description 11
- 125000005103 alkyl silyl group Chemical group 0.000 description 10
- 125000000304 alkynyl group Chemical group 0.000 description 10
- 125000005104 aryl silyl group Chemical group 0.000 description 10
- 125000004104 aryloxy group Chemical group 0.000 description 10
- 230000001976 improved effect Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
- 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 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 8
- 125000000623 heterocyclic group Chemical group 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 6
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical group C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 6
- 150000001721 carbon Chemical group 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
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- 238000006467 substitution reaction Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical group [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Chemical group 0.000 description 5
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000004305 biphenyl Chemical group 0.000 description 4
- 235000010290 biphenyl Nutrition 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 4
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical group C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 4
- 239000012634 fragment Substances 0.000 description 4
- 150000002431 hydrogen Chemical group 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 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 3
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical group [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 229910052769 Ytterbium Inorganic materials 0.000 description 3
- 125000006615 aromatic heterocyclic group Chemical group 0.000 description 3
- 125000002529 biphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C12)* 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- XSCHRSMBECNVNS-UHFFFAOYSA-N quinoxaline Chemical compound N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 3
- 239000010703 silicon Chemical group 0.000 description 3
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 3
- 239000011593 sulfur Chemical group 0.000 description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- 125000005580 triphenylene group Chemical group 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- BNRDGHFESOHOBF-UHFFFAOYSA-N 1-benzoselenophene Chemical compound C1=CC=C2[se]C=CC2=C1 BNRDGHFESOHOBF-UHFFFAOYSA-N 0.000 description 2
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 2
- 125000004972 1-butynyl group Chemical group [H]C([H])([H])C([H])([H])C#C* 0.000 description 2
- 125000004343 1-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 125000000069 2-butynyl group Chemical group [H]C([H])([H])C#CC([H])([H])* 0.000 description 2
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- 125000000474 3-butynyl group Chemical group [H]C#CC([H])([H])C([H])([H])* 0.000 description 2
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
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- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 description 2
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
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- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
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- WIUZHVZUGQDRHZ-UHFFFAOYSA-N [1]benzothiolo[3,2-b]pyridine Chemical compound C1=CN=C2C3=CC=CC=C3SC2=C1 WIUZHVZUGQDRHZ-UHFFFAOYSA-N 0.000 description 2
- DZBUGLKDJFMEHC-UHFFFAOYSA-N acridine Chemical compound C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 description 2
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- 229910052782 aluminium Inorganic materials 0.000 description 2
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- 125000003277 amino group Chemical group 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical group C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- CUFNKYGDVFVPHO-UHFFFAOYSA-N azulene Chemical group C1=CC=CC2=CC=CC2=C1 CUFNKYGDVFVPHO-UHFFFAOYSA-N 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
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- WDECIBYCCFPHNR-UHFFFAOYSA-N chrysene Chemical group C1=CC=CC2=CC=C3C4=CC=CC=C4C=CC3=C21 WDECIBYCCFPHNR-UHFFFAOYSA-N 0.000 description 2
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- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
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- VVVPGLRKXQSQSZ-UHFFFAOYSA-N indolo[3,2-c]carbazole Chemical compound C1=CC=CC2=NC3=C4C5=CC=CC=C5N=C4C=CC3=C21 VVVPGLRKXQSQSZ-UHFFFAOYSA-N 0.000 description 2
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- 125000003564 m-cyanobenzyl group Chemical group [H]C1=C([H])C(=C([H])C(C#N)=C1[H])C([H])([H])* 0.000 description 2
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- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
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- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical group C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
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- 125000000876 trifluoromethoxy group Chemical group FC(F)(F)O* 0.000 description 2
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 description 2
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- 125000006736 (C6-C20) aryl group Chemical group 0.000 description 1
- PXLYGWXKAVCTPX-UHFFFAOYSA-N 1,2,3,4,5,6-hexamethylidenecyclohexane Chemical compound C=C1C(=C)C(=C)C(=C)C(=C)C1=C PXLYGWXKAVCTPX-UHFFFAOYSA-N 0.000 description 1
- KTZQTRPPVKQPFO-UHFFFAOYSA-N 1,2-benzoxazole Chemical compound C1=CC=C2C=NOC2=C1 KTZQTRPPVKQPFO-UHFFFAOYSA-N 0.000 description 1
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical compound C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 1
- FLBAYUMRQUHISI-UHFFFAOYSA-N 1,8-naphthyridine Chemical compound N1=CC=CC2=CC=CN=C21 FLBAYUMRQUHISI-UHFFFAOYSA-N 0.000 description 1
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- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
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- 229930192474 thiophene Natural products 0.000 description 1
- ZGYICYBLPGRURT-UHFFFAOYSA-N tri(propan-2-yl)silicon Chemical group CC(C)[Si](C(C)C)C(C)C ZGYICYBLPGRURT-UHFFFAOYSA-N 0.000 description 1
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- 125000002306 tributylsilyl group Chemical group C(CCC)[Si](CCCC)(CCCC)* 0.000 description 1
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- 125000000025 triisopropylsilyl group Chemical group C(C)(C)[Si](C(C)C)(C(C)C)* 0.000 description 1
- SLAJUCLVZORTHN-UHFFFAOYSA-N triphenylgermanium Chemical compound C1=CC=CC=C1[Ge](C=1C=CC=CC=1)C1=CC=CC=C1 SLAJUCLVZORTHN-UHFFFAOYSA-N 0.000 description 1
- STDLEZMOAXZZNH-UHFFFAOYSA-N tritert-butylsilicon Chemical compound CC(C)(C)[Si](C(C)(C)C)C(C)(C)C STDLEZMOAXZZNH-UHFFFAOYSA-N 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
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Description
各々の発光ユニットは、それぞれ少なくとも1つの発光層を含み、
少なくとも1つの発光ユニットは、第1有機材料および第2有機材料が含まれた第1有機層を含み、
少なくとも1グループの隣り合う2つの前記発光ユニットの間には、第3有機材料が含まれた緩衝層を含む電荷発生層が設けられ、
前記第1有機材料のLUMOエネルギーレベルが前記第3有機材料のLUMOエネルギーレベル以上であり、前記第3有機材料のLUMOエネルギーレベルが4.90eV超であり、
前記第2有機材料のHOMOエネルギーレベルが4.99eV超である、有機エレクトロルミネッセンス素子が開示される。
各々の発光ユニットは、それぞれ少なくとも1つの発光層を含み、
少なくとも1つの発光ユニットは、第1有機材料および第2有機材料が含まれた第1有機層を含み、
少なくとも1グループの隣り合う2つの前記発光ユニットの間には、第3有機材料が含まれた緩衝層を含む電荷発生層が設けられ、
前記第1有機材料のLUMOエネルギーレベルが前記第3有機材料のLUMOエネルギーレベル以上であり、前記第3有機材料のLUMOエネルギーレベルが4.90eV超であり、
前記第2有機材料のHOMOエネルギーレベルが4.99eV超である、有機エレクトロルミネッセンス素子が開示される。
Z1は、出現毎に同一または異なってO、SまたはSeから選ばれ、
各々のR1は、同一または異なってもよく、R1、R1’、R1’’およびR1’’’のうちの少なくとも1つは、少なくとも1つの電子求引性基を有する基であり、
式1中、隣り合う置換基は、結合して環を形成していてもよく、
X2は、出現毎に同一または異なってNR2’、CR2’’R2’’’、O、SまたはSeから選ばれ、
式2中、隣り合う置換基は、結合して環を形成していてもよく、
環AAは、少なくとも1つの環内二重結合を有する、環原子数4~30の共役構造であり、
n3は、出現毎に同一または異なって0~10の整数から選ばれ、
Y3は、出現毎に同一または異なってCRL3およびNからなる群から選ばれ、
環A3は、出現毎に同一または異なって、1つの環内二重結合、少なくとも1つのN原子および少なくとも1つのヘテロ原子W3を含む5員ヘテロ環であり、W3は、出現毎に同一または異なってO、S、SeおよびNRN3からなる群から選ばれ、
X3は、出現毎に同一または異なってO、S、Se、NR3’およびCR3’’R3’’’からなる群から選ばれ、
R3およびRL3は、出現毎に同一または異なって一置換、複数置換、または無置換を表し、
L3が
X3がNR3’またはCR3’’R3’’’から選ばれる場合、R3’、R3’’およびR3’’’のうちの少なくとも1つは、少なくとも1つの電子求引性基を有する基であり、
隣り合う置換基R3’’、R3’’’は、結合して環を形成していてもよく、
隣り合う置換基R3、RL3は、結合して環を形成していてもよく、隣り合う置換基RL3が結合して環を形成する場合、形成した環は、少なくとも4つの環原子を有し、隣り合う置換基R3が結合して環を形成する場合、形成した環は、少なくとも6つの環原子を有し、
R1、R1’、R1’’、R1’’’、R2’、R2’’、R2’’’、R3、R3’、R3’’、R3’’’、RL3およびRN3は、出現毎に同一または異なって水素、重水素、ハロゲン、ニトロソ基、ニトロ基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、SCN、OCN、SF5、ボラニル基、スルフィニル基、スルホニル基、ホスホノキシ基、ヒドロキシル基、スルファニル基、置換または非置換の炭素原子数1~20のアルキル基、置換または非置換の環炭素原子数3~20のシクロアルキル基、置換または非置換の炭素原子数1~20のヘテロアルキル基、置換または非置換の環原子数3~20のヘテロ環基、置換または非置換の炭素原子数7~30のアラルキル基、置換または非置換の炭素原子数1~20のアルコキシ基、置換または非置換の炭素原子数6~30のアリールオキシ基、置換または非置換の炭素原子数2~20のアルケニル基、置換または非置換の炭素原子数2~20のアルキニル基、置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、置換または非置換の炭素原子数3~20のアルキルシリル基、置換または非置換の炭素原子数6~20のアリールシリル基、置換または非置換の炭素原子数3~20のアルキルゲルマニウム基、置換または非置換の炭素原子数6~20のアリールゲルマニウム基、およびこれらの組合せからなる群から選ばれる。)
前記式2におけるX2は、出現毎に同一または異なってCR2’’R2’’’またはNR2’から選ばれ、R2’、R2’’およびR2’’’は、それぞれ少なくとも1つの電子求引性基を有する基であり、
前記式3におけるX3は、出現毎に同一または異なってCR3’’R3’’’またはNR3’から選ばれ、R3’、R3’’およびR3’’’は、それぞれ少なくとも1つの電子求引性基を有する基である。
W3は、出現毎に同一または異なってO、S、SeおよびNRN3からなる群から選ばれ、
R3、R3’、R3’’、R3’’’およびRN3は、出現毎に同一または異なって水素、重水素、ハロゲン、ニトロソ基、ニトロ基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、SCN、OCN、SF5、ボラニル基、スルフィニル基、スルホニル基、ホスホノキシ基、ヒドロキシル基、スルファニル基、置換または非置換の炭素原子数1~20のアルキル基、置換または非置換の環炭素原子数3~20のシクロアルキル基、置換または非置換の炭素原子数1~20のヘテロアルキル基、置換または非置換の環原子数3~20のヘテロ環基、置換または非置換の炭素原子数7~30のアラルキル基、置換または非置換の炭素原子数1~20のアルコキシ基、置換または非置換の炭素原子数6~30のアリールオキシ基、置換または非置換の炭素原子数2~20のアルケニル基、置換または非置換の炭素原子数2~20のアルキニル基、置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、置換または非置換の炭素原子数3~20のアルキルシリル基、置換または非置換の炭素原子数6~20のアリールシリル基、置換または非置換の炭素原子数3~20のアルキルゲルマニウム基、置換または非置換の炭素原子数6~20のアリールゲルマニウム基、およびこれらの組合せからなる群から選ばれ、
「**」は、上記構造と式3におけるL3との結合箇所を表す。)
X3は、出現毎に同一または異なってO、S、Se、NR3’およびCR3’’R3’’’からなる群から選ばれ、
W3は、出現毎に同一または異なってO、S、SeおよびNRN3からなる群から選ばれ、
Y3は、出現毎に同一または異なってCRL3およびNからなる群から選ばれ、
Z3は、出現毎に同一または異なってCRL3およびNからなる群から選ばれ、
R2’、R2’’、R2’’’、R3、R3’、R3’’、R3’’’、RL3およびRN3は、出現毎に同一または異なって水素、重水素、ハロゲン、ニトロソ基、ニトロ基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、SCN、OCN、SF5、ボラニル基、スルフィニル基、スルホニル基、ホスホノキシ基、ヒドロキシル基、スルファニル基、置換または非置換の炭素原子数1~20のアルキル基、置換または非置換の環炭素原子数3~20のシクロアルキル基、置換または非置換の炭素原子数1~20のヘテロアルキル基、置換または非置換の環原子数3~20のヘテロ環基、置換または非置換の炭素原子数7~30のアラルキル基、置換または非置換の炭素原子数1~20のアルコキシ基、置換または非置換の炭素原子数6~30のアリールオキシ基、置換または非置換の炭素原子数2~20のアルケニル基、置換または非置換の炭素原子数2~20のアルキニル基、置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、置換または非置換の炭素原子数3~20のアルキルシリル基、置換または非置換の炭素原子数6~20のアリールシリル基、置換または非置換の炭素原子数3~20のアルキルゲルマニウム基、置換または非置換の炭素原子数6~20のアリールゲルマニウム基、およびこれらの組合せからなる群から選ばれる。)
Ar5は、出現毎に同一または異なって置換または非置換の炭素原子数6~30のアリール基、または置換または非置換の炭素原子数3~30のヘテロアリール基gから選ばれ、
R5、A5、R5a、R5b、R5c、R5d、R5e、R5f、R5g、R5h、R5vおよびR5wは、出現毎に同一または異なって水素、重水素、ハロゲン、ニトロソ基、ニトロ基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、SCN、OCN、SF5、ボラニル基、スルフィニル基、スルホニル基、ホスホノキシ基、ヒドロキシル基、スルファニル基、置換または非置換の炭素原子数1~20のアルキル基、置換または非置換の環炭素原子数3~20のシクロアルキル基、置換または非置換の炭素原子数1~20のヘテロアルキル基、置換または非置換の環原子数3~20のヘテロ環基、置換または非置換の炭素原子数7~30のアラルキル基、置換または非置換の炭素原子数1~20のアルコキシ基、置換または非置換の炭素原子数6~30のアリールオキシ基、置換または非置換の炭素原子数2~20のアルケニル基、置換または非置換の炭素原子数2~20のアルキニル基、置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、置換または非置換の炭素原子数3~20のアルキルシリル基、置換または非置換の炭素原子数6~20のアリールシリル基、置換または非置換の炭素原子数3~20のアルキルゲルマニウム基、置換または非置換の炭素原子数6~20のアリールゲルマニウム基、およびこれらの組合せからなる群から選ばれ、
そのうち、A5は、少なくとも1つの電子求引性基を有する基であり、且つ上述したいずれか1つの構造において、R5a、R5b、R5c、R5d、R5e、R5f、R5g、R5h、R5vおよびR5wのうちの1つまたは複数が現れる場合、R5a、R5b、R5c、R5d、R5e、R5f、R5g、R5h、R5vおよびR5wのうちの少なくとも1つは、少なくとも1つの電子求引性基を有する基であり、
隣り合う置換基R5、R5a、R5b、R5c、R5d、R5e、R5f、R5g、R5h、R5vおよびR5wは、結合して環を形成していてもよく、
「*」は、前記基と、式1におけるデヒドロベンゾビスオキサゾール環、デヒドロベンゾビスジアゾール環(Dehydrobenzodithiazole ring)またはデヒドロベンゾジセレナゾール環との結合箇所、式2におけるラジアレンとの結合箇所、または式3における環A3との結合箇所を表す。)
X4は、出現毎に同一または異なってCR4またはNから選ばれ、
L4は、出現毎に同一または異なって置換または非置換の炭素原子数6~30のアリーレン基、置換または非置換の炭素原子数3~30のヘテロアリーレン基、またはこれらの組合せから選ばれ、
Ar4は、出現毎に同一または異なって置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、またはこれらの組合せから選ばれ、
R4は、出現毎に同一または異なって水素、重水素、ハロゲン、置換または非置換の炭素原子数1~20のアルキル基、置換または非置換の環炭素原子数3~20のシクロアルキル基、置換または非置換の炭素原子数1~20のヘテロアルキル基、置換または非置換の環原子数3~20のヘテロ環基、置換または非置換の炭素原子数7~30のアラルキル基、置換または非置換の炭素原子数1~20のアルコキシ基、置換または非置換の炭素原子数6~30のアリールオキシ基、置換または非置換の炭素原子数2~20のアルケニル基、置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、置換または非置換の炭素原子数3~20のアルキルシリル基、置換または非置換の炭素原子数6~20のアリールシリル基、置換または非置換の炭素原子数3~20のアルキルゲルマニウム基、置換または非置換の炭素原子数6~20のアリールゲルマニウム基、置換または非置換の炭素原子数0~20のアミン基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、ヒドロキシ基、スルファニル基、スルフィニル基、スルホニル基、ホスフィノ基、およびこれらの組合せからなる群から選ばれ、
式4中、隣り合う置換基は、結合して環を形成していてもよい。)
Claims (33)
- 第1電極、
第2電極、および
第1電極と第2電極との間に設けられた少なくとも2つの発光ユニットを含む有機エレクトロルミネッセンス素子であって、
各々の発光ユニットは、少なくとも1つの発光層を含み、
少なくとも1つの発光ユニットは、第1有機材料および第2有機材料が含まれた第1有機層を含み、
少なくとも1グループの隣り合う2つの前記発光ユニットの間には、第3有機材料が含まれた緩衝層を含む電荷発生層が設けられ、
前記第1有機材料のLUMOエネルギーレベルが前記第3有機材料のLUMOエネルギーレベル以上であり、前記第3有機材料のLUMOエネルギーレベルが4.90eV超であり、
前記第2有機材料のHOMOエネルギーレベルが4.99eV超であり、
前記第3有機材料は、式1または式3で表される構造を有する、有機エレクトロルミネッセンス素子。
X 1 は、出現毎に同一または異なってNR 1 ’、CR 1 ’’R 1 ’’’、O、SまたはSeから選ばれ、
Z 1 は、出現毎に同一または異なってO、SまたはSeから選ばれ、
各々のR 1 は、同一または異なってもよく、R 1 、R 1 ’、R 1 ’’およびR 1 ’’’のうちの少なくとも1つは、少なくとも1つの電子求引性基を有する基であり、
式1中、隣り合う置換基は、結合して環を形成していてもよい。)
式3中、L 3 は、出現毎に同一または異なって
環AAは、少なくとも1つの環内二重結合を有する、環原子数4~30の共役構造であり、
n 3 は、出現毎に同一または異なって0~10の整数から選ばれ、
Y 3 は、出現毎に同一または異なってCR L3 およびNからなる群から選ばれ、
環A 3 は、出現毎に同一または異なって、1つの環内二重結合、少なくとも1つのN原子および少なくとも1つのヘテロ原子W 3 を含む5員ヘテロ環であり、W 3 は、出現毎に同一または異なってO、S、SeおよびNR N3 からなる群から選ばれ、
X 3 は、出現毎に同一または異なってO、S、Se、NR 3 ’およびCR 3 ’’R 3 ’’’からなる群から選ばれ、
R 3 およびR L3 は、出現毎に同一または異なって一置換、複数置換、または無置換を表し、
L 3 が
X 3 がNR 3 ’またはCR 3 ’’R 3 ’’’から選ばれる場合、R 3 ’、R 3 ’’およびR 3 ’’’のうちの少なくとも1つは、少なくとも1つの電子求引性基を有する基であり、
隣り合う置換基R 3 ’’、R 3 ’’’は、結合して環を形成していてもよく、
隣り合う置換基R 3 、R L3 は、結合して環を形成していてもよく、隣り合う置換基R L3 が結合して環を形成する場合、形成した環は、少なくとも4つの環原子を有し、隣り合う置換基R 3 が結合して環を形成する場合、形成した環は、少なくとも6つの環原子を有し、
R 1 、R 1 ’、R 1 ’’、R 1 ’’’、R 3 、R 3 ’、R 3 ’’、R 3 ’’’、R L3 およびR N3 は、出現毎に同一または異なって水素、重水素、ハロゲン、ニトロソ基、ニトロ基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、SCN、OCN、SF 5 、ボラニル基、スルフィニル基、スルホニル基、ホスホノキシ基、ヒドロキシル基、スルファニル基、置換または非置換の炭素原子数1~20のアルキル基、置換または非置換の環炭素原子数3~20のシクロアルキル基、置換または非置換の炭素原子数1~20のヘテロアルキル基、置換または非置換の環原子数3~20のヘテロ環基、置換または非置換の炭素原子数7~30のアラルキル基、置換または非置換の炭素原子数1~20のアルコキシ基、置換または非置換の炭素原子数6~30のアリールオキシ基、置換または非置換の炭素原子数2~20のアルケニル基、置換または非置換の炭素原子数2~20のアルキニル基、置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、置換または非置換の炭素原子数3~20のアルキルシリル基、置換または非置換の炭素原子数6~20のアリールシリル基、置換または非置換の炭素原子数3~20のアルキルゲルマニウム基、置換または非置換の炭素原子数6~20のアリールゲルマニウム基、およびこれらの組合せからなる群から選ばれる。) - 前記第1有機層に含まれた第1有機材料は、p型材料であり、前記緩衝層に含まれた第3有機材料は、p型材料である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記第1有機層に含まれた第1有機材料は、式1、式2、式3のうちの1つで表される構造を有する、請求項1または2に記載の有機エレクトロルミネッセンス素子。
Z1は、出現毎に同一または異なってO、SまたはSeから選ばれ、
各々のR1は、同一または異なってもよく、R1、R1’、R1’’およびR1’’’のうちの少なくとも1つは、少なくとも1つの電子求引性基を有する基であり、
式1中、隣り合う置換基は、結合して環を形成していてもよく、
n2は、1~4の整数であり、
X2は、出現毎に同一または異なってNR2’、CR2’’R2’’’、O、SまたはSeから選ばれ、
式2中、隣り合う置換基は、結合して環を形成していてもよく、
環AAは、少なくとも1つの環内二重結合を有する、環原子数4~30の共役構造であり、
n3は、出現毎に同一または異なって0~10の整数から選ばれ、
Y3は、出現毎に同一または異なってCRL3およびNからなる群から選ばれ、
環A3は、出現毎に同一または異なって、1つの環内二重結合、少なくとも1つのN原子および少なくとも1つのヘテロ原子W3を含む5員ヘテロ環であり、W3は、出現毎に同一または異なってO、S、SeおよびNRN3からなる群から選ばれ、
X3は、出現毎に同一または異なってO、S、Se、NR3’およびCR3’’R3’’’からなる群から選ばれ、
R3およびRL3は、出現毎に同一または異なって一置換、複数置換、または無置換を表し、
L3が
X3がNR3’またはCR3’’R3’’’から選ばれる場合、R3’、R3’’およびR3’’’のうちの少なくとも1つは、少なくとも1つの電子求引性基を有する基であり、
隣り合う置換基R3’’、R3’’’は、結合して環を形成していてもよく、
隣り合う置換基R3、RL3は、結合して環を形成していてもよく、隣り合う置換基RL3が結合して環を形成する場合、形成した環は、少なくとも4つの環原子を有し、隣り合う置換基R3が結合して環を形成する場合、形成した環は、少なくとも6つの環原子を有し、
R1、R1’、R1’’、R1’’’、R2’、R2’’、R2’’’、R3、R3’、R3’’、R3’’’、RL3およびRN3は、出現毎に同一または異なって水素、重水素、ハロゲン、ニトロソ基、ニトロ基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、SCN、OCN、SF5、ボラニル基、スルフィニル基、スルホニル基、ホスホノキシ基、ヒドロキシル基、スルファニル基、置換または非置換の炭素原子数1~20のアルキル基、置換または非置換の環炭素原子数3~20のシクロアルキル基、置換または非置換の炭素原子数1~20のヘテロアルキル基、置換または非置換の環原子数3~20のヘテロ環基、置換または非置換の炭素原子数7~30のアラルキル基、置換または非置換の炭素原子数1~20のアルコキシ基、置換または非置換の炭素原子数6~30のアリールオキシ基、置換または非置換の炭素原子数2~20のアルケニル基、置換または非置換の炭素原子数2~20のアルキニル基、置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、置換または非置換の炭素原子数3~20のアルキルシリル基、置換または非置換の炭素原子数6~20のアリールシリル基、置換または非置換の炭素原子数3~20のアルキルゲルマニウム基、置換または非置換の炭素原子数6~20のアリールゲルマニウム基、およびこれらの組合せからなる群から選ばれる。) - 前記第1有機層に含まれた第1有機材料は、式1で表される構造を有する、請求項3に記載の有機エレクトロルミネッセンス素子。
- 前記式1におけるX1は、出現毎に同一または異なってCR1’’R1’’’またはNR1’から選ばれ、R1’、R1’’およびR1’’’は、それぞれ少なくとも1つの電子求引性基を有する基であり、
前記式2におけるX2は、出現毎に同一または異なってCR2’’R2’’’またはNR2’から選ばれ、R2’、R2’’およびR2’’’は、それぞれ少なくとも1つの電子求引性基を有する基であり、
前記式3におけるX3は、出現毎に同一または異なってCR3’’R3’’’またはNR3’から選ばれ、R3’、R3’’およびR3’’’は、それぞれ少なくとも1つの電子求引性基を有する基である、請求項3に記載の有機エレクトロルミネッセンス素子。 - 前記式1におけるX 1 は、出現毎に同一または異なってCR 1 ’’R 1 ’’’またはNR 1 ’から選ばれ、式1におけるR 1 、R 1 ’、R 1 ’’およびR 1 ’’’は、それぞれ少なくとも1つの電子求引性基を有する基であり、
前記式2におけるX 2 は、出現毎に同一または異なってCR 2 ’’R 2 ’’’またはNR 2 ’から選ばれ、R 2 ’、R 2 ’’およびR 2 ’’’は、それぞれ少なくとも1つの電子求引性基を有する基であり、
前記式3におけるX 3 は、出現毎に同一または異なってCR 3 ’’R 3 ’’’またはNR 3 ’から選ばれ、式3におけるR 3 、R 3 ’、R 3 ’’、R 3 ’’’、R L3 およびR N3 は、それぞれ少なくとも1つの電子求引性基を有する基である、請求項3に記載の有機エレクトロルミネッセンス素子。 - 前記X 1 およびX 3 は、式X-1である、請求項9に記載の有機エレクトロルミネッセンス素子。
- 前記R1およびR3は、出現毎に同一または異なって水素、重水素、ハロゲン、ニトロソ基、ニトロ基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、SCN、OCN、SF5、ボラニル基、スルフィニル基、スルホニル基、ホスホノキシ基、非置換の炭素原子数1~20のアルキル基、非置換の環炭素原子数3~20のシクロアルキル基、非置換の炭素原子数1~20のアルコキシ基、非置換の炭素原子数2~20のアルケニル基、非置換の炭素原子数6~30のアリール基、非置換の炭素原子数3~30のヘテロアリール基、およびハロゲン、ニトロソ基、ニトロ基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、SCN、OCN、SF5、ボラニル基、スルフィニル基、スルホニル基およびホスホノキシ基のうちの1つまたは複数の基で置換された、炭素原子数1~20のアルキル基、環炭素原子数3~20のシクロアルキル基、炭素原子数1~20のアルコキシ基、炭素原子数2~20のアルケニル基、炭素原子数6~30のアリール基、炭素原子数3~30のヘテロアリール基のうちのいずれか1つの基、並びにこれらの組合せからなる群から選ばれる、請求項3~10のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- R 1 およびR 3 は、出現毎に同一または異なって水素、重水素、メチル基、イソプロピル基、NO 2 、SO 2 CH 3 、SCF 3 、C 2 F 5 、OC 2 F 5 、OCH 3 、ジフェニルメチルシリル基、フェニル基、メトキシフェニル基、p-メチルフェニル基、2,6-ジイソプロピルフェニル基、ビフェニル基、ポリフルオロフェニル基、ジフルオロピリジル基、ニトロフェニル基、ジメチルチアゾール基、CNまたはCF 3 のうちの1つのまたは複数で置換されたビニル基、CNまたはCF 3 のうちの1つで置換されたエチニル基、ジメチルホスホノキシ基、ジフェニルホスホノキシ基、F、CF 3 、OCF 3 、SF 5 、SO 2 CF 3 、シアノ基、イソシアノ基、SCN、OCN、トリフルオロメチルフェニル基、トリフルオロメトキシフェニル基、ビス(トリフルオロメチル)フェニル基、ビス(トリフルオロメトキシ)フェニル基、4-シアノテトラフルオロフェニル基、F、CNまたはCF 3 のうちの1つのまたは複数で置換されたフェニル基またはビフェニル基、テトラフルオロピリジル基、ピリミジニル基、トリアジニル基、ジフェニルボラニル基、オキサボランスリル基、およびこれらの組合せからなる群から選ばれる、請求項3~10のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- 式1における2つのR 1 は、同様である、または式3における2つのR 3 は、同様である、請求項3~13のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- 前記Z1およびW3は、出現毎に同一または異なってO、SまたはSeから選ばれる、請求項3~14のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- 前記式2中、n2=1であり、式3中、n3=0である、請求項3~15のいずれか1項に記載の有機エレクトロルミネッセンス素子。
- 前記第1有機材料は、化合物1-1~化合物1-348、化合物2-1~化合物2-37、化合物3-1~化合物3-696からなる群から選ばれ、前記第3有機材料は、化合物1-1~化合物1-348、化合物3-1~化合物3-696からなる群から選ばれ、
化合物1-1~化合物1-348は、式1で表される構造を有し、
化合物2-1~化合物2-37は、以下の式で表される構造を有し、
化合物3-349~化合物3-696は、式3-2で表される構造を有し、
- 前記第1有機層に含まれた第2有機材料は、式4で表される構造を有する、請求項1~17のいずれか1項に記載の有機エレクトロルミネッセンス素子。
L4は、出現毎に同一または異なって置換または非置換の炭素原子数6~30のアリーレン基、置換または非置換の炭素原子数3~30のヘテロアリーレン基、またはこれらの組合せから選ばれ、
Ar4は、出現毎に同一または異なって置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、またはこれらの組合せから選ばれ、
R4は、出現毎に同一または異なって水素、重水素、ハロゲン、置換または非置換の炭素原子数1~20のアルキル基、置換または非置換の環炭素原子数3~20のシクロアルキル基、置換または非置換の炭素原子数1~20のヘテロアルキル基、置換または非置換の環原子数3~20のヘテロ環基、置換または非置換の炭素原子数7~30のアラルキル基、置換または非置換の炭素原子数1~20のアルコキシ基、置換または非置換の炭素原子数6~30のアリールオキシ基、置換または非置換の炭素原子数2~20のアルケニル基、置換または非置換の炭素原子数6~30のアリール基、置換または非置換の炭素原子数3~30のヘテロアリール基、置換または非置換の炭素原子数3~20のアルキルシリル基、置換または非置換の炭素原子数6~20のアリールシリル基、置換または非置換の炭素原子数3~20のアルキルゲルマニウム基、置換または非置換の炭素原子数6~20のアリールゲルマニウム基、置換または非置換の炭素原子数0~20のアミン基、アシル基、カルボニル基、カルボキシル基、エステル基、シアノ基、イソシアノ基、ヒドロキシ基、スルファニル基、スルフィニル基、スルホニル基、ホスフィノ基、およびこれらの組合せからなる群から選ばれ、
式4中、隣り合う置換基は、結合して環を形成していてもよい。) - 前記第1有機材料のLUMOエネルギーレベルが5.36eV以上である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記第1有機材料のLUMOエネルギーレベルが5.49eV以上である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記第1有機材料のLUMOエネルギーレベルが5.69eV以上である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記第2有機材料のHOMOエネルギーレベルが、5.21eV以上である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記第3有機材料のLUMOエネルギーレベルが5.36eV以上である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記第3有機材料のLUMOエネルギーレベルが5.49eV以上である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記第3有機材料のLUMOエネルギーレベルが5.69eV以上である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記電荷発生層は、金属層をさらに含む、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記発光ユニットは、前記第1有機層と前記発光層との間に設けられた第2有機層をさらに含み、
前記第2有機層は、前記第2有機材料を含み、前記第2有機層は、前記発光層に接触する、請求項1に記載の有機エレクトロルミネッセンス素子。 - 前記第1有機材料および第3有機材料は、同一の化合物である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記発光ユニットのうち、少なくとも2つの発光ユニットに前記第1有機材料および前記第2有機材料が含まれ、少なくとも2つの前記発光ユニットに含まれた前記第1有機材料が同様であり、少なくとも2つの前記発光ユニットに含まれた前記第2有機材料が同様である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記第1有機層が陽極に接触する、または前記第1有機層が緩衝層に接触する、請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記第1有機層に含まれた前記第1有機材料の第1有機層全体に対する重量比が、5%以下である、請求項1に記載の有機エレクトロルミネッセンス素子。
- 請求項1~32のいずれか1項に記載の有機エレクトロルミネッセンス素子を含む、表示コンポーネント。
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