WO2006051649A1 - 有機エレクトロルミネッセンス素子 - Google Patents
有機エレクトロルミネッセンス素子 Download PDFInfo
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- WO2006051649A1 WO2006051649A1 PCT/JP2005/016749 JP2005016749W WO2006051649A1 WO 2006051649 A1 WO2006051649 A1 WO 2006051649A1 JP 2005016749 W JP2005016749 W JP 2005016749W WO 2006051649 A1 WO2006051649 A1 WO 2006051649A1
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- Prior art keywords
- group
- substituted
- unsubstituted
- carbon atoms
- nuclear
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- -1 fluorene compound Chemical class 0.000 claims abstract description 276
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N o-biphenylenemethane Natural products C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000010409 thin film Substances 0.000 claims abstract description 12
- 125000004432 carbon atom Chemical group C* 0.000 claims description 146
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 56
- 239000000463 material Substances 0.000 claims description 53
- 150000001875 compounds Chemical class 0.000 claims description 42
- 125000000623 heterocyclic group Chemical group 0.000 claims description 42
- 125000004429 atom Chemical group 0.000 claims description 40
- 239000002019 doping agent Substances 0.000 claims description 32
- 125000000217 alkyl group Chemical group 0.000 claims description 29
- 239000000126 substance Substances 0.000 claims description 25
- 125000004122 cyclic group Chemical group 0.000 claims description 24
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- 125000002947 alkylene group Chemical group 0.000 claims description 17
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 17
- 125000004104 aryloxy group Chemical group 0.000 claims description 16
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 16
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthene Chemical compound C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 13
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims description 12
- 125000003545 alkoxy group Chemical group 0.000 claims description 11
- 150000001721 carbon Chemical group 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 125000001424 substituent group Chemical group 0.000 claims description 9
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 8
- 125000005843 halogen group Chemical group 0.000 claims description 8
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 claims description 8
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 claims description 8
- 125000003342 alkenyl group Chemical group 0.000 claims description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 7
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 7
- 125000003282 alkyl amino group Chemical group 0.000 claims description 6
- 125000001769 aryl amino group Chemical group 0.000 claims description 6
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 5
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 150000004770 chalcogenides Chemical class 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 125000005504 styryl group Chemical group 0.000 claims description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical group F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 3
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical group [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 3
- 125000005110 aryl thio group Chemical group 0.000 claims description 2
- 239000011368 organic material Substances 0.000 claims description 2
- 238000005401 electroluminescence Methods 0.000 claims 3
- WDECIBYCCFPHNR-UHFFFAOYSA-N chrysene Chemical compound C1=CC=CC2=CC=C3C4=CC=CC=C4C=CC3=C21 WDECIBYCCFPHNR-UHFFFAOYSA-N 0.000 claims 2
- BRSRUYVJULRMRQ-UHFFFAOYSA-N 1-phenylanthracene Chemical compound C1=CC=CC=C1C1=CC=CC2=CC3=CC=CC=C3C=C12 BRSRUYVJULRMRQ-UHFFFAOYSA-N 0.000 claims 1
- FCNCGHJSNVOIKE-UHFFFAOYSA-N 9,10-diphenylanthracene Chemical group C1=CC=CC=C1C(C1=CC=CC=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 FCNCGHJSNVOIKE-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 167
- 238000002347 injection Methods 0.000 description 49
- 239000007924 injection Substances 0.000 description 49
- 239000010408 film Substances 0.000 description 31
- 238000000034 method Methods 0.000 description 23
- 239000000758 substrate Substances 0.000 description 21
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 20
- 229910052782 aluminium Inorganic materials 0.000 description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 15
- 230000032258 transport Effects 0.000 description 13
- 239000011521 glass Substances 0.000 description 12
- 150000002894 organic compounds Chemical class 0.000 description 12
- 238000001771 vacuum deposition Methods 0.000 description 11
- 230000005525 hole transport Effects 0.000 description 10
- 239000007983 Tris buffer Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 7
- 125000005956 isoquinolyl group Chemical group 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000000151 deposition Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 6
- 230000005684 electric field Effects 0.000 description 6
- 238000004528 spin coating Methods 0.000 description 6
- 238000007740 vapor deposition Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 239000007772 electrode material Substances 0.000 description 5
- 125000001041 indolyl group Chemical group 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 5
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 5
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 5
- 238000005215 recombination Methods 0.000 description 5
- 230000006798 recombination Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- WUVGQCTUWZMTON-UHFFFAOYSA-N 2-methylpyrrole Chemical compound CC1=CC=C[N]1 WUVGQCTUWZMTON-UHFFFAOYSA-N 0.000 description 4
- FEKWWZCCJDUWLY-UHFFFAOYSA-N 3-methyl-1h-pyrrole Chemical compound CC=1C=CNC=1 FEKWWZCCJDUWLY-UHFFFAOYSA-N 0.000 description 4
- 239000005725 8-Hydroxyquinoline Substances 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 4
- 239000013522 chelant Substances 0.000 description 4
- 150000001924 cycloalkanes Chemical group 0.000 description 4
- 230000009477 glass transition Effects 0.000 description 4
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 4
- 229960003540 oxyquinoline Drugs 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 125000005493 quinolyl group Chemical group 0.000 description 4
- 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 3
- CHTLVASIXCFOHC-UHFFFAOYSA-N 2,7-phenanthroline Chemical compound C1=NC=C2C3=CC=CN=C3C=CC2=C1 CHTLVASIXCFOHC-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 125000002078 anthracen-1-yl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C([*])=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 3
- 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 3
- 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 3
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 3
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 3
- 238000000295 emission spectrum Methods 0.000 description 3
- 150000002430 hydrocarbons Chemical group 0.000 description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 229910001507 metal halide Inorganic materials 0.000 description 3
- 150000005309 metal halides Chemical class 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 150000004032 porphyrins Chemical class 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- HBBKKZVRZMEYOS-UHFFFAOYSA-N 1,8-phenanthroline Chemical compound N1=CC=C2C3=NC=CC=C3C=CC2=C1 HBBKKZVRZMEYOS-UHFFFAOYSA-N 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
- 125000001462 1-pyrrolyl group Chemical group [*]N1C([H])=C([H])C([H])=C1[H] 0.000 description 2
- ADDZHRRCUWNSCS-UHFFFAOYSA-N 2-Benzofurancarboxaldehyde Chemical group C1=CC=C2OC(C=O)=CC2=C1 ADDZHRRCUWNSCS-UHFFFAOYSA-N 0.000 description 2
- 125000006280 2-bromobenzyl group Chemical group [H]C1=C([H])C(Br)=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 125000002941 2-furyl group Chemical group O1C([*])=C([H])C([H])=C1[H] 0.000 description 2
- 125000006290 2-hydroxybenzyl group Chemical group [H]OC1=C(C([H])=C([H])C([H])=C1[H])C([H])([H])* 0.000 description 2
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 description 2
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- 125000004105 2-pyridyl group Chemical group N1=C([*])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- 125000000389 2-pyrrolyl group Chemical group [H]N1C([*])=C([H])C([H])=C1[H] 0.000 description 2
- 125000006279 3-bromobenzyl group Chemical group [H]C1=C([H])C(=C([H])C(Br)=C1[H])C([H])([H])* 0.000 description 2
- 125000003682 3-furyl group Chemical group O1C([H])=C([*])C([H])=C1[H] 0.000 description 2
- 125000006291 3-hydroxybenzyl group Chemical group [H]OC1=C([H])C([H])=C([H])C(=C1[H])C([H])([H])* 0.000 description 2
- 125000001397 3-pyrrolyl group Chemical group [H]N1C([H])=C([*])C([H])=C1[H] 0.000 description 2
- ZZLCFHIKESPLTH-UHFFFAOYSA-N 4-Methylbiphenyl Chemical group C1=CC(C)=CC=C1C1=CC=CC=C1 ZZLCFHIKESPLTH-UHFFFAOYSA-N 0.000 description 2
- 125000006281 4-bromobenzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1Br)C([H])([H])* 0.000 description 2
- 125000003143 4-hydroxybenzyl group Chemical group [H]C([*])([H])C1=C([H])C([H])=C(O[H])C([H])=C1[H] 0.000 description 2
- LVZWSLJZHVFIQJ-UHFFFAOYSA-N Cyclopropane Chemical compound C1CC1 LVZWSLJZHVFIQJ-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 125000002009 alkene group Chemical group 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 125000000748 anthracen-2-yl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C([H])=C([*])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 2
- 125000000319 biphenyl-4-yl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C1=C([H])C([H])=C([*])C([H])=C1[H] 0.000 description 2
- 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 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000005388 borosilicate glass Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 150000004696 coordination complex Chemical group 0.000 description 2
- VPUGDVKSAQVFFS-UHFFFAOYSA-N coronene Chemical compound C1=C(C2=C34)C=CC3=CC=C(C=C3)C4=C4C3=CC=C(C=C3)C4=C2C3=C1 VPUGDVKSAQVFFS-UHFFFAOYSA-N 0.000 description 2
- 150000004775 coumarins Chemical class 0.000 description 2
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- DMEGYFMYUHOHGS-UHFFFAOYSA-N cycloheptane Chemical compound C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 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
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 125000004923 naphthylmethyl group Chemical group C1(=CC=CC2=CC=CC=C12)C* 0.000 description 2
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 2
- 125000006504 o-cyanobenzyl group Chemical group [H]C1=C([H])C(C#N)=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 125000003261 o-tolyl group Chemical group [H]C1=C([H])C(*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 2
- 229910052762 osmium Inorganic materials 0.000 description 2
- 150000004866 oxadiazoles Chemical class 0.000 description 2
- 125000006505 p-cyanobenzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C#N)C([H])([H])* 0.000 description 2
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 2
- 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 2
- 125000005561 phenanthryl group Chemical group 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- GBROPGWFBFCKAG-UHFFFAOYSA-N picene Chemical compound C1=CC2=C3C=CC=CC3=CC=C2C2=C1C1=CC=CC=C1C=C2 GBROPGWFBFCKAG-UHFFFAOYSA-N 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 150000003220 pyrenes Chemical class 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 230000027756 respiratory electron transport chain Effects 0.000 description 2
- 229910052702 rhenium Inorganic materials 0.000 description 2
- 229910052707 ruthenium Inorganic materials 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
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 125000000547 substituted alkyl group Chemical group 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 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 2
- DXBHBZVCASKNBY-UHFFFAOYSA-N 1,2-Benz(a)anthracene Chemical compound C1=CC=C2C3=CC4=CC=CC=C4C=C3C=CC2=C1 DXBHBZVCASKNBY-UHFFFAOYSA-N 0.000 description 1
- OURODNXVJUWPMZ-UHFFFAOYSA-N 1,2-diphenylanthracene Chemical compound C1=CC=CC=C1C1=CC=C(C=C2C(C=CC=C2)=C2)C2=C1C1=CC=CC=C1 OURODNXVJUWPMZ-UHFFFAOYSA-N 0.000 description 1
- KLCLIOISYBHYDZ-UHFFFAOYSA-N 1,4,4-triphenylbuta-1,3-dienylbenzene Chemical class C=1C=CC=CC=1C(C=1C=CC=CC=1)=CC=C(C=1C=CC=CC=1)C1=CC=CC=C1 KLCLIOISYBHYDZ-UHFFFAOYSA-N 0.000 description 1
- GFEPEQYRZIPEIX-UHFFFAOYSA-N 1-(2-aminophenyl)-2-phenylethane-1,2-dione Chemical group NC1=CC=CC=C1C(=O)C(=O)C1=CC=CC=C1 GFEPEQYRZIPEIX-UHFFFAOYSA-N 0.000 description 1
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- 125000005920 sec-butoxy group Chemical group 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229940071182 stannate Drugs 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 description 1
- 125000001935 tetracenyl group Chemical group C1(=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C12)* 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 125000003866 trichloromethyl group Chemical group ClC(Cl)(Cl)* 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 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
- 125000005580 triphenylene group Chemical group 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 125000002114 valyl group Chemical group 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
Classifications
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- C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
- C09B23/12—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain being branched "branched" means that the substituent on the polymethine chain forms a new conjugated system, e.g. most trinuclear cyanine dyes
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- C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
- C09B23/14—Styryl dyes
- C09B23/148—Stilbene dyes containing the moiety -C6H5-CH=CH-C6H5
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- C09B57/008—Triarylamine dyes containing no other chromophores
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- C09B6/00—Anthracene dyes not provided for above
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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
- H05B33/14—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
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- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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- C09K2211/1018—Heterocyclic compounds
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- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1088—Heterocyclic compounds characterised by ligands containing oxygen as the only heteroatom
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- 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
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- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
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- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
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- H10K85/6574—Polycyclic condensed heteroaromatic hydrocarbons comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
Definitions
- the present invention relates to an organic electoluminescence (EL) device, and more particularly to an organic EL device that is excellent in heat resistance, has a long lifetime, has high luminous efficiency, and can emit blue to red light.
- EL organic electoluminescence
- An organic EL element is a self-luminous element utilizing the principle that a fluorescent substance emits light by recombination energy of holes injected from an anode and electrons injected from a cathode when an electric field is applied.
- Eastman 'Kodak's CW Tang et al. Reported a low-voltage driven organic EL device (CW Tang, SA Vanslyke, Applied Physics Letters, 51 ⁇ , 913, 1987, etc.). Since then, research on organic EL devices using organic materials as constituent materials has been actively conducted.
- the device structure of the organic EL device is a hole transport (injection) layer, a two-layer type of electron transporting light emitting layer, or a hole transport (injection) layer, light emitting layer, electron transport (injection).
- the three-layer type is well known.
- the element structure and the formation method have been devised in order to increase the recombination efficiency of injected holes and electrons.
- light-emitting materials such as chelate complexes such as tris (8-quinolinolato) aluminum complex, coumarin derivatives, tetraphenylbutadiene derivatives, bisstyrylarylene derivatives, oxadiazole derivatives and the like are known.
- chelate complexes such as tris (8-quinolinolato) aluminum complex, coumarin derivatives, tetraphenylbutadiene derivatives, bisstyrylarylene derivatives, oxadiazole derivatives and the like are known.
- chelate complexes such as tris (8-quinolinolato) aluminum complex
- coumarin derivatives such as coumarin derivatives, tetraphenylbutadiene derivatives, bisstyrylarylene derivatives, oxadiazole derivatives and the like
- Non-patent Document 1 organic EL devices using iridium complexes as light-emitting materials exhibit high luminous efficiency.
- Non-patent Document 2 organic EL devices using a conjugated polymer has been reported by a group of Cambridge University (Non-patent Document 2). In this report, light emission was confirmed in a single layer by forming a film of polyphenylene bilene (PPV) in a coating system.
- PPV polyphenylene bilene
- Patent Documents 4 and 5 disclose devices using bisanthracene derivatives as light emitting materials. Bisanthracene was insufficient as the power to be used as a blue light-emitting material because its efficiency and lifetime did not reach a practical level.
- Patent Documents 6 to 9 disclose devices using symmetrical pyrene derivatives. Although such a symmetric pyrene derivative is used as a blue light emitting material, improvement in device lifetime has been demanded.
- Patent Document 9 describes a combination of materials in which a compound in which a condensed polycyclic aromatic group having 3 or more benzene rings is directly bonded to a fluorene residue is used as a host material, and a diamine having a fluorene skeleton is used as a dopant.
- Patent Document 10 discloses an element using an aminoanthracene derivative as a green light emitting material.
- the glass EL has a low glass transition temperature, the heat resistance of the organic EL device using the material is low, and a long life and high efficiency light emission are obtained.
- Patent Document 11 discloses a red light-emitting device in which a naphthacene or pentacene derivative is added to a light-emitting layer. Although this light-emitting device has excellent red purity, the applied voltage is as high as 11 V and the half life of luminance is high. Was insufficient with 1500 hours.
- Patent Document 12 discloses a red light emitting device in which an amine-based aromatic compound is added to a light emitting layer, and this light emitting device has a color purity of CIE chromaticity (0.64, 0.33). The drive voltage was as high as 10V or more.
- Patent Document 13 discloses a device in which an azafluoranthene compound is added to a light-emitting layer. The device emits yellow to green light, and does not emit sufficient red light.
- Patent Document 1 Japanese Patent Application Laid-Open No. 8-239655
- Patent Document 2 Japanese Patent Laid-Open No. 7-138561
- Patent Document 3 Japanese Patent Laid-Open No. 3-200289
- Patent Document 4 US Patent No. 3008897
- Patent Document 5 Japanese Patent Laid-Open No. 8-12600
- Patent Document 6 JP 2001-118682 A
- Patent Document 7 JP 2002-63988 A
- Patent Document 8 Japanese Patent Application Laid-Open No. 2004-75567
- Patent Document 9 Japanese Patent Laid-Open No. 2004-83481
- Patent Document 10 Japanese Patent Application Laid-Open No. 2001-207167
- Patent Document 11 Japanese Patent Laid-Open No. 8-311442
- Patent Document 12 Japanese Patent Laid-Open No. 2001-81451
- Patent Document 13 Japanese Patent Laid-Open No. 2001-160489
- Non-Patent Document 1 Nature, 395, 151 (1998)
- Non-Patent Document 2 Nature, 347, 539 (1990)
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an organic EL device that has excellent heat resistance, long life, high luminous efficiency, and blue to red light emission.
- the present invention provides an organic EL device in which an organic thin film layer comprising at least one light emitting layer or a plurality of light emitting layers is sandwiched between a cathode and an anode.
- the present invention provides an organic EL device comprising an amine compound represented by the formula (A) and a fluorene compound represented by the following general formula (B).
- P represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 40 nuclear carbon atoms, a substituted or unsubstituted heterocyclic group having 3 to 40 nuclear atoms, or a substituted or unsubstituted styryl group. It is a group.
- Ar to Ar are each independently substituted or unsubstituted aromatic carbon having 6 to 40 nuclear carbon atoms.
- n is an integer of 1 to 10.
- A is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted heterocyclic group having 6 to 50 nuclear atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms.
- B is a single bond, a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or an alkylene group, substituted or unsubstituted. And a C 1-50 alkenyl group or alkellene group, and when n force or more, a plurality of B may be the same or different.
- X is a single bond, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted alkylene group having 1 to 50 carbon atoms, a substituted or unsubstituted carbon number of 1 to 5
- m is 2 or more, multiple Xs may be the same or different.
- FL is a fluorene derived group represented by any one of the following general formulas (1) to (6) or a combination force of these fluorene derived groups.
- n is 2 or more, Multiple FLs may be the same or different! /!
- L is a single bond, (CR'R ") one,-(SiR'R”) one, O-, one
- R ′ and R ′′ are each independently a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 nuclear atoms, substituted Or an unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a substituted or unsubstituted group.
- Aryloxy group having 5 to 50 nucleus atoms, substituted or unsubstituted aryloxy group having 5 to 50 nucleus atoms, substituted or unsubstituted alkoxycarbonyl group having 1 to 50 carbon atoms, force Rupoxyl group, halogen atom, cyano group, nitro group, or hydroxyl group may be bonded to each other to form a cyclic structure.
- k is an integer of 1 to: LO, and R ′ and R ′′ may be the same or different.
- Z is a carbon atom, a silicon atom or a germanium atom.
- Q is a cyclic structure-forming group, and the cyclic structure composed of Z—Q is further substituted or unsubstituted cycloalkyl group having 3 to 50 nuclear carbon atoms, substituted or unsubstituted nuclear carbon numbers 6 to 50.
- Ar represents a cyclic structure indicated by a circle surrounding the symbol Ar, and the number of nuclear carbon atoms that may have a substituent may be 3 to 20, and a carbon atom may be replaced by a nitrogen atom, a cycloalkane residue, a substituent Or an aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms or a substituent, or a heterocyclic group having 5 to 50 nuclear atoms, and when there are a plurality of Ar, a plurality of Ar may be the same or different.
- R to R are each independently a hydrogen atom, a substituted or unsubstituted nuclear carbon number of 6 to 50
- Aromatic hydrocarbon group substituted or unsubstituted heterocyclic group having 5 to 50 nucleus atoms, substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, substituted or unsubstituted alkyl group having 1 to 50 carbon atoms Coxy group, substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, substituted or unsubstituted aralkyl group having 5 to 50 nucleus atoms, substituted or unsubstituted arylthio group having 5 to 50 nucleus atoms, substituted or substituted An unsubstituted carbon group having 2 to 50 carbon atoms, a carboxyl group, a halogen atom, a cyan group, a nitro group, or a hydroxyl group.
- a to d are integers of 0 to 4, respectively.
- the organic EL device of the present invention is excellent in heat resistance, has a long lifetime and high luminous efficiency, and can emit blue to red light.
- the organic EL device of the present invention has one or more layers having at least a light-emitting layer between a cathode and an anode.
- the light emitting layer is an amine compound represented by the following general formula (A) and a fluorene compound represented by the following general formula (B): Containing.
- P represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 40 nuclear carbon atoms, a substituted or unsubstituted heterocyclic group having 3 to 40 nuclear atoms, Or a substituted or unsubstituted styryl group.
- aromatic hydrocarbon group and heterocyclic group of P include those similar to A and B of the general formula (B), respectively.
- a condensed aromatic ring group having 10 to 40 nuclear carbon atoms For example, naphthalene, phenanthrene, fluoranthene, anthracene, pyrene, perylene, coronene, taricene, picene, binaphthyl, trinaphthyl, ferroanthracene, diphenenolanethracene, funolenic len, triphenylene, novanthene, benzanthracene , Dibenzanthracene, isenaft fluoranthene, tribenzopentaphene, fluoranthene tenofluoranthene, benzodifluoranthene, benzofluoranthene, diindenoperylene, particularly naphthalene, phenanthrene, fluoranthene, anthrac
- Ar to Ar each independently represent a substituted or unsubstituted nuclear coal.
- Examples of the aromatic hydrocarbon group of Ar to Ar include phenyl group, 1 naphthyl group, 2 Naphthyl group, 1 anthryl group, 2 anthryl group, 9 anthryl group, 1-phenanthryl group, 2 phenanthryl group, 3 phenanthryl group, 4-phenanthryl group, 9-phenanthryl group, 1 naphthacyl group, 2 naphthacyl group , 9 Naphthacele group, 1 Pyrele group, 2 Pyrele group, 4-Pyreyl group, 2 Biphenyl-ruyl group, 3 Biphenyl-ruyl group, 4-Biphenylyl group, p-Terferlue 4— Group, p terfero-ru 3—yl group, ⁇ terfero-lu 2—yl group, m-terferu-lu 4—yl group, m-terferu-lu 3—yl group, m-terfe- Lu 2-yl
- Examples of the Ar to Ar heterocyclic group include 1 pyrrolyl group, 2 pyrrolyl group, and 3 pyrrolyl group.
- Amine compound strength represented by general formula (A) Amines represented by the following general formulas (Al), (A2), (A3), (A4) and (A5)! I like it! /.
- P is an aromatic hydrocarbon group having 6 to 40 nuclear carbon atoms.
- R and R are each independently substituted or unsubstituted carbon.
- alkyl group for R and R examples include a methyl group, an ethyl group, a propyl group,
- the aromatic hydrocarbon group for R and R include a phenol group and 2-methylphenol.
- Examples of the aralkyl group of R and R include, for example, a benzyl group, 1-phenylethyl
- Examples of the cycloalkyl group for R and R include, for example, a cyclopropyl group, cyclopropyl group, and the like.
- R and R alkoxy groups examples include methoxy, ethoxy, and propoxy.
- R and R aryloxy groups include, for example, phenoxy groups, tolyloxy groups,
- arylamino group for R and R examples include, for example, diphenylamino group, ditolylamino group.
- alkylamino group for R and R examples include, for example, a dimethylamino group, a jetylamino group.
- e and f are each an integer of 0 to 5, and e + f ⁇ l.
- e and f are each 2 or more, the plurality of R and R are the same or different.
- cyclic structures include a substituted or unsubstituted cycloalkyl group having 3 to 50 nuclear carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, or a substituted or unsubstituted group.
- R to R are independently the same as R and R, and
- cyclic structures may be bonded to each other to form a saturated or unsaturated cyclic structure.
- cyclic structure examples include those described above.
- Ar to Ar are each independently substituted or unsubstituted carbon.
- Examples of the aromatic hydrocarbon group and the heterocyclic group are Ar to Ar, respectively.
- Examples include those similar to 14 and their divalent residues.
- a substituted or unsubstituted secondary or tertiary alkyl group having 3 to 10 carbon atoms is preferred.
- P represents a substituted or unsubstituted alkylene having 10 to 40 carbon atoms.
- Ar and Ar are each independently substituted or unsubstituted carbon.
- R to R each independently represent a hydrogen atom, substituted or unsubstituted
- t is an integer of 1 to 4.
- amine compound represented by the general formula (A) including (A1) to (A5)) are shown below, but are not limited thereto.
- Me represents a methyl group.
- m is an integer of 0 to 0, preferably 0 to 4 and more preferably 1 to 2.
- n is an integer of 1 to 10, preferably 1 to 5, and more preferably 1 to 3.
- A represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted heterocyclic group having 6 to 50 nuclear atoms, a substituted or unsubstituted carbon group.
- An alkyl group having 1 to 50 carbon atoms, or a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, and when m is 2 or more, a plurality of A may be the same or different.
- B is a single bond, a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or An alkylene group, a substituted or unsubstituted alkylene group having 1 to 50 carbon atoms or an alkylene group, and when n is 2 or more, a plurality of B may be the same or different.
- Examples of the aromatic hydrocarbon group of A and B include phenyl group, 1-naphthyl group, 2-naphthyl group, 1-anthryl group, 2-anthryl group, 9-anthryl group, 1-anthryl group, 2-phenanthryl group.
- heterocyclic group of A examples include 1 pyrrolyl group, 2 pyrrolyl group, 3 pyrrolyl group, pyrazinyl group, 2 pyridyl group, 3 pyridinyl group, 4 pyridinyl group, 1 indolyl group, 2— Indolyl group, 3-Indolyl group, 4-Indolyl group, 5-Indolyl group, 6-Indolyl group, 7-Indolyl group, 1-Isoindolyl group, 2-Isoindolyl group, 3-Isoindolyl group, 4-Isoindolyl group, 5 —Isoindolyl group, 6-Isoindolyl group, 7-Isoindryl group, 2 Furyl group, 3 Furyl group, 2 Benzofural group, 3 Benzofural group, 4 Benzofuryl group, 5—Benzofuryl group 6-Benzofural group, 7-Benz
- alkyl groups of A and B include methyl group, ethyl group, propyl group, isopropyl group, n-butyl group, s-butyl group, isobutyl group, dimethylmethyl group, n-pentyl group, and n- Xyl, n-heptyl, n-octyl, chloromethyl, 1 chloroethyl, 2 chloroethyl, 2 chloroisobutyl, 1,2 dichloroethyl, 1,3 dichloroethyl, 1 , 2, 3 Trichloropropyl group, bromomethyl group, 1-bromoethyl group, 2-bromoethyl group, 2-bromoisobutyl group, 1,2-dibromoethyl group, 1,3 dibromoisopropyl group, 1, 2, 3 tribromopropyl Group, odomethyl group, 1- odoethyl group
- Examples of the alkenyl groups of A and B include a bulu group, a valyl group, a 1-butur group, a 2-butur group, a 3-butur group, a 1,3-butane ger group, a 1-methyl beryl group, a styre group.
- Ryl group 2, 2-diphenyl benzyl group, 1, 2-diphenyl benzyl group, 1-methyl allyl group, 1, 1-dimethyl allyl group, 2-methyl allyl group, 1-fur yl allyl group, 2-phenol Ruaryl group, 3-furaryl group, 3,3 diphenyl-laryl group, 1,2 dimethylaryl group 1-Fuel-Lu 1-Butul group, 3-Fuel-Lu 1-Butul group and the like.
- alkene group include these divalent groups.
- X represents a single bond, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, or a substituted or unsubstituted alkylene group having 1 to 50 carbon atoms.
- a substituted or unsubstituted alk-ylene group having 1 to 50 carbon atoms, and when m is 2 or more, a plurality of X may be the same or different.
- Examples of the aromatic hydrocarbon group, alkylene group and alkene group for X are the same as those for A and B, respectively.
- FL is a fluorene derived group represented by any one of the following general formulas (1) to (6) or a combination force of these fluorene derived groups, and n force At these times, the plurality of FLs may be the same or different.
- L is a single bond, one (CR'R ”) —,-(SiR'R”)
- R ′ and R ′′ each independently represents a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 nuclear atoms, Substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, substituted or unsubstituted nuclear atom 5 to 50 aryloxy group, substituted or unsubstituted aryloxy group having 5 to 50 carbon atoms, substituted or unsubstituted alkoxycarbo group having 2 to 50 carbon atoms, carboxyl group, halogen atom, cyano group, nitro Or a hydroxyl group, which may be bonded to each other to form a
- Examples of the aromatic hydrocarbon group, heterocyclic group and alkyl group represented by R ′ and R ′′ include those similar to A and B, respectively.
- the alkoxy group of R ′ and R ′′ is a group represented by OY, and examples of Y include
- Examples of the aralkyl groups of R ′ and R ′′ include benzyl group, 1-phenylethyl group, 2-phenylethyl group, 1-phenylisopropyl group, 2-phenylisopropyl group, and phenyl group.
- t butyl group a naphthylmethyl group, 1 ⁇ naphthylethyl group, 2-a naphthinoreethinole group, 1-a naphthinoreisopropinole group, 2-a naphthinoreisopropyl group, j8-naphthylmethyl group, 1- ⁇ Naphthylethyl, 2- ⁇ naphthylethyl, 1 j8-naphthylisopropyl, 2- ⁇ naphthylisopropyl, 1 pyrrolylmethyl, 2- (1 pyrrolyl) ethyl, ⁇ -methylbenzyl, m-methylbenzyl, o —Methinolevendinore group, p-Chronoguchi Benzinore group, m-Cloco-Bendinore group, o Chronoguchi benzyl group, p-Bromobenzyl group, m-Brom
- the aryl group of R ′ and R ′′ is represented as SY, and examples of ⁇ include the aromatic
- the alkoxycarbo group of R ′ and R ′′ is represented as COOZ.
- alkyl group examples are the same as those described above.
- halogen atoms for R ′ and R ′′ include a fluorine atom, a chlorine atom and a bromine atom.
- ⁇ is a carbon atom, a silicon atom, or a germanium atom.
- Q is a cyclic structure-forming group
- examples of the cyclic structure composed of ZQ include a substituted or unsubstituted cycloalkyl group having 3 to 50 nuclear carbon atoms, substituted Alternatively, an unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 nuclear atoms, and the like. It may be condensed with 50 cycloalkyl groups, substituted or unsubstituted aromatic hydrocarbon groups having 6 to 50 nuclear carbon atoms, or substituted or unsubstituted heterocyclic groups having 5 to 50 nuclear atoms.
- Examples of the cycloalkyl group of Q include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, and the like.
- aromatic hydrocarbon group and heterocyclic group for Q are the same as those described above for ⁇ and B.
- Ar represents a cyclic structure represented by a circle surrounding the symbol Ar, and a cycloalkane residue having 3 to 20 nuclear carbon atoms which may have a substituent , May have a substituent V is an aromatic hydrocarbon group having 6 to 50 carbon atoms, or a heterocyclic group having 5 to 50 nucleus atoms, and a plurality of Ar In this case, a plurality of Ar may be the same or different.
- the aromatic hydrocarbon group and heterocyclic group of Ar include the residues described in the examples A and B, respectively.
- cycloalkane residues having 3 to 20 carbon atoms and carbon atoms that may be replaced by nitrogen atoms include cyclopropane, cyclobutane, Examples include residues such as cyclopropane, cyclohexane, cycloheptane, pyrrolidine, piperidine, and piperazine.
- R to R are each independently a hydrogen atom, substituted or
- the adjacent R to R may be bonded to each other to form a cyclic structure.
- Examples of each group represented by R to R include those similar to R and R ′′, respectively.
- Examples of the cyclic structure include those similar to the cyclic structure composed of Z-Q.
- a to d are integers of 0 to 4, respectively.
- the amine compound represented by the general formula (A) is an amine compound represented by the general formula (A1), and is a fluorene-based compound represented by the general formula (B).
- the FL is preferably a fluorene derivative group represented by any one of the general formulas (1) to (5), or a group having a combination force of these fluorene derivative groups.
- the fluorene compounds represented by the general formula (B) are preferably those represented by the following.
- FL is a fluorene derivative derived from any one of the general formulas (1) to (6).
- Ar ′ is a substituted or unsubstituted cycloalkane residue having 3 to 50 nuclear carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 50 nuclear carbon atoms, or a substituted or unsubstituted nucleus atom number 5 to 50 FA is a substituted or unsubstituted condensed aromatic hydrocarbon group having 8 to 50 nuclear carbon atoms, or a substituted or unsubstituted condensed heterocyclic group having 8 to 50 nuclear atoms.
- each group of Ar ′ and FA are the same as those described for Ar, and a condensed ring residue having the following structure is preferable.
- the substituents of the groups described in the general formulas (A) and (B) include a halogen atom, a hydroxyl group, a substituted or unsubstituted amino group, a nitro group, a cyano group, a substituted or unsubstituted group.
- Substituted alkyl group fluorine-substituted alkyl group, substituted or unsubstituted alkenyl group, substituted or unsubstituted cycloalkyl group, substituted or unsubstituted alkoxyl group, substituted or unsubstituted heterocyclic group, substituted or unsubstituted An arylalkyl group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted alkoxycarbonyl group, a carboxy group, and the like.
- the organic EL device of the present invention at least one selected from the fluorene compounds represented by the general formula (B) is a host material, which is represented by the general formula (A).
- the light emitting layer preferably has at least one selected dopant as a dopant, and the 99.99: 0.01-80 00: 20.00 It is preferable to contain it in the ratio of weight%.
- the emission colors of green to pure red in the organic EL device of the present invention can be classified by the maximum emission wavelength of the emission spectrum, blue (maximum emission wavelength: 410 to 485 nm), blue green (maximum emission wavelength: 485 to 500 nm). ), Green (maximum emission wavelength: 500 to 530 nm), yellow (maximum emission wavelength: 530 to 585), orange (585 to 595), red (maximum emission wavelength: 595 to 620) Pure red (maximum emission wavelength: 620 to 700 nm).
- an organic compound layer composed of one or more layers including at least a light emitting layer is sandwiched between a pair of electrodes, and various kinds of materials are provided between the electrode and the organic compound layer. It is preferable to interpose an intermediate layer. Examples of the intermediate layer include a hole injection layer, a hole transport layer, an electron injection layer, and an electron transport layer. These are known to be various organic and inorganic compounds.
- Anode Z Inorganic semiconductor layer Z Insulating layer Z Light emitting layer Z Insulating layer Z Cathode
- the force for which the configuration of (8) is preferably used is not limited to these.
- This organic EL element is usually produced on a translucent substrate.
- This translucent substrate is a substrate that supports the organic EL element.
- the transmissivity of light in the visible region of 400 to 700 nm is 50% or more, and a smoother substrate is desired. It is preferable to use it.
- a glass plate or a synthetic resin plate is preferably used as such a translucent substrate.
- the glass plate include soda lime glass, norlium strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, norium borosilicate glass, and quartz.
- the synthetic resin plate include polycarbonate resin, acrylic resin, polyethylene terephthalate resin, polyether sulfide resin, and polysulfone resin.
- anode a material having a large work function! /, (4 eV or more) metal, alloy, electrically conductive compound or a mixture thereof is preferably used.
- electrode materials include metals such as Au, Cul, ITO (indium tin oxide), SnO,
- Examples thereof include conductive materials such as ZnO and In—Zn—O.
- a thin film can be formed from these electrode materials by a method such as vapor deposition or sputtering.
- the anode desirably has such a characteristic that the transmittance for light emission of the anode is greater than 10% when light emission from the light emitting layer is also extracted.
- the sheet resistance of the anode is preferably several hundred ⁇ or less.
- the film thickness of the anode depends on the material, it is usually selected in the range of 10 nm to 1 ⁇ m, preferably 10 to 200 nm.
- the cathode those having a small work function! / ⁇ (4 eV or less) metal, alloy, electrically conductive compound, and a mixture thereof as an electrode material are used.
- electrode materials include sodium, sodium monopotassium alloy, magnesium, lithium, magnesium silver alloy, aluminum Z aluminum oxide, AlZLi 0, Al / LiO, Al / LiF,
- Lumium ⁇ Lithium alloy, indium, rare earth metal, etc. are listed.
- This cathode can be produced by forming a thin film of these electrode materials by a method such as vapor deposition or sputtering.
- the transmittance with respect to light emitted from the cathode is larger than 10%.
- the sheet resistance as the cathode is preferably several hundred ⁇ Z or less, and the film thickness is usually 10 nm to 1 ⁇ m, preferably 50 to 200 nm.
- a chalcogenide layer, a metal halide layer and a metal oxide layer are formed on at least one surface of the pair of electrodes thus prepared. It is preferable to arrange at least one layer selected from Yes. Specifically, a chalcogenide (including oxide) layer of metal such as silicon or aluminum is formed on the anode surface on the organic compound layer side, and a metal halide layer or metal acid layer is formed on the cathode surface on the organic compound layer side. It is advisable to dispose the material layer. As a result, the drive can be stabilized.
- Preferred examples of the chalcogenide include SiOx (l ⁇ X ⁇ 2), A10x (l ⁇ X ⁇ 1.5), SiO N, SiAlON, etc.
- examples of the metal halide include LiF, MgF,
- CaF, rare earth metal fluoride, etc. are preferred, and examples of metal oxides include Cs.
- Preferred examples include 0, Li 0, MgO, SrO, BaO, and CaO.
- a mixed region of an electron transfer compound and a reducing dopant or a hole transfer compound is formed on at least one surface of the pair of electrodes thus prepared. It is also preferable to place a mixed region of acidic dopants. In this way, the electron transfer compound is reduced and becomes an anion, and the mixed region more easily injects and transfers electrons to the luminescent medium. In addition, the hole transfer compound is oxidized and becomes a cation, so that the mixed region more easily injects and transfers holes to the luminescent medium.
- Preferred acid-soluble dopants include various Lewis acid acceptor compounds.
- Preferred reducing dopants include alkali metals, alkali metal compounds, alkaline earth metals, rare earth metals, and compounds thereof.
- the light emitting layer comprises
- Injection function function that can inject holes from the anode or hole injection layer when an electric field is applied, and can inject electrons from the negative electrode or electron injection layer
- Transport function Function to move injected charges (electrons and holes) by the force of electric field
- Luminescent function provides a field for recombination of electrons and holes, and has a function to connect this to light emission.
- the light emitting layer and the organic compound layer containing the light emitting layer As a method for forming the light emitting layer and the organic compound layer containing the light emitting layer, known methods such as a vapor deposition method, a spin coating method, and an LB method can be applied.
- the light emitting layer and the organic compound layer are particularly preferably molecular deposited films.
- the molecular deposition film is a thin film formed by deposition from a material compound in a gas phase state or a film formed by solidification from a material compound in a solution state or a liquid phase state.
- the LB method The thin film (molecular accumulation film) formed can be classified by the difference in aggregated structure and higher order structure and the functional difference resulting from it.
- JP-A-57-51781 after binding a binder such as rosin and a material compound into a solvent to form a solution, this is applied to a spin coating method or the like.
- the organic compound layer can also be formed by thin film formation.
- the light emitting layer may contain other known organic compounds other than the components (A) and (B) as desired.
- a light emitting layer containing another known organic compound may be stacked on the light emitting layer containing the compound.
- the light emitting layer may contain a known fluorescent or phosphorescent dopant in addition to the amine compound represented by the general formula (A).
- the fluorescent dopant is selected from amine compounds, chelate complexes such as tris (8-quinolinolato) aluminum complexes, coumarin derivatives, tetraphenol butadiene derivatives, bisstyryl arylene derivatives, oxadiazole derivatives, etc. according to the required emission color. It is preferred that the compound be selected.
- a ligand that is preferably a metal complex compound containing at least one metal that is also selected from Ir, Ru, Pd, Pt, Os, and Re is a ligand. It is preferable to have at least one skeleton selected from a ferropyridine skeleton, a bibilidyl skeleton, and a phenantorin phosphorus skeleton.
- metal complexes include tris (2-phenol-pyridine) iridium, tris (2-phenol-pyridine) ruthenium, tris (2-phenolpyridine) palladium, bis (2-phenol-pyridine) platinum, Powers that include tris (2-phenol-bilidine) osmium, tris (2-phenol-pyridine) rhenium, otataethylplatinum porphyrin, octafelplatinum porphyrin, otataethylpalladium porphyrin, octaphenyl palladium porphyrin, etc.
- the appropriate complex is selected based on the required emission color, device performance, and host compound.
- the thickness of the light emitting layer is preferably in the range of 5 to 200 nm, and particularly in the range of 10 to 40 nm because the applied voltage of the device can be lowered.
- the organic EL device of the present invention is a fluorene compound represented by the general formula (B).
- B fluorene compound represented by the general formula (B).
- the host material preferably has a glass transition point of 110 ° C or higher. By mixing such a compound having a glass transition point, the glass transition point of the light emitting layer can be increased to 110 ° C or higher, and a storage heat resistance of 85 ° C for 500 hours or longer can be obtained. It becomes possible.
- the chromaticity of the emission color and the peak wavelength of the emission spectrum can be controlled by adjusting the mixing ratio of the host material and the dopant. That is, when the proportion of dopant is increased, the peak of the emission spectrum shifts to a longer wavelength. This is because the phosphor spectrum involved in the dopant has a long wavelength. This makes it possible to reproduce colors from blue to green to red by appropriately selecting various dopants.
- the hole injecting / transporting layer is a layer that helps injecting holes into the light emitting layer and transports them to the light emitting region, and has a high hole mobility and usually has an ion energy of 5.5 eV or less. And small.
- a material that transports holes to the light-emitting layer with a lower electric field strength is preferred.
- the mobility force of holes is small, for example, when an electric field of 10 4 to 10 6 VZcm is applied. even without those wherein 10- 6 cm 2 ZV 'seconds is preferred. Examples of such a material are those conventionally used as a charge transport material for holes over a photoconductive material, and known materials used for a hole injection layer of an organic EL element. Any one can be selected and used.
- the hole injection' transport material may be thinned by a known method such as a vacuum deposition method, a spin coating method, a cast method, or an LB method.
- the thickness of the hole injection / transport layer is not particularly limited, but is usually 5 ⁇ ! ⁇ ) At 5 ⁇ m.
- the electron injection layer 'transport layer is a layer that assists injection of electrons into the light emitting layer and transports it to the light emitting region, and has a high electron mobility. Among these, it is a layer that has particularly good adhesion to the cathode and material strength.
- the material used for the electron injection layer is preferably a metal complex of 8-hydroxyquinoline or a derivative thereof. Specific examples of the above metal complexes of 8-hydroxyquinoline or its derivatives include oxine (generally 8-quinoline).
- a metal chelate oxinoid compound containing a chelate of linole or 8-hydroxyquinoline, for example, tris (8-quinolinol) aluminum can be used as an electron injection material.
- the organic EL device of the present invention applies an electric field to the ultrathin film, pixel defects due to leakage or short-circuiting are likely to occur.
- an insulating thin film layer may be inserted between the pair of electrodes.
- Examples of the material used for the insulating layer include acid aluminum, lithium fluoride, lithium oxide, fluoresceium, acid cesium, acid magnesium, fluoride magnesium, acid calcium, fluoride.
- Examples thereof include calcium chloride, aluminum nitride, titanium oxide, silicon oxide, germanium oxide, silicon nitride, boron nitride, molybdenum oxide, ruthenium oxide, and vanadium oxide. A mixture or laminate of these may be used.
- an anode for example, an anode, a light emitting layer, a hole injection layer as necessary, and an electron injection layer as necessary are formed by the above-described materials and methods.
- a cathode may be formed on the substrate.
- the organic EL element can be fabricated in the reverse order from the cathode to the anode.
- a thin film made of an anode material is formed on a suitable light-transmitting substrate by an evaporation method or a sputtering method so as to have a thickness of 1 ⁇ m or less, preferably in the range of 10 to 200 nm, and used as an anode.
- a hole injection layer is provided on the anode.
- the hole injection layer can be formed by a vacuum deposition method, a spin coating method, a casting method, an LB method, or the like, but a homogeneous film can be obtained immediately and pinholes are generated. It is preferable to form by a vacuum vapor deposition method.
- the deposition conditions vary depending on the compound used (the material of the hole injection layer), the crystal structure and recombination structure of the target hole injection layer, etc.
- a light emitting layer is provided on this hole injection layer.
- the formation of the light emitting layer is also related to the present invention. Although it can be formed by thin film formation using an organic compound by methods such as vacuum deposition, sputtering, spin coating, and casting, a homogeneous film can be obtained quickly and pinholes are unlikely to occur. From the point of view, etc., it is preferable to form by vacuum evaporation method.
- the deposition conditions vary depending on the compound used, but can generally be selected from the same range of conditions as in the formation of the hole injection layer.
- the film thickness is preferably in the range of 10 to 40 nm.
- an electron injection layer is provided on the light emitting layer. Also in this case, like the hole injection layer and the light emitting layer, it is preferable to form by a vacuum evaporation method because it is necessary to obtain a homogeneous film.
- the vapor deposition conditions can be selected from the same condition ranges as those for the hole injection layer and the light emitting layer.
- a cathode is laminated to obtain an organic EL element.
- the cathode also has a metallic force, and vapor deposition and sputtering can be used. However, vacuum deposition is preferred to protect the underlying organic layer from damage during film formation.
- the above organic EL device is preferably manufactured from the anode to the cathode consistently by a single vacuum.
- a transparent electrode with a film thickness of 130 nm and indium tin oxide was provided on a 1 mm size glass substrate. After cleaning this glass substrate by irradiating it with ultraviolet rays and ozone, this substrate was placed in a vacuum deposition apparatus.
- the compound (B) -2 as a host material and the compound (A) -51 as a dopant were co-evaporated at a weight ratio of 40: 2, to form a light-emitting layer having a thickness of 40 nm.
- tris (8-hydroxyquinolinato) aluminum was deposited to a thickness of 20 nm as an electron injection layer.
- lithium fluoride was evaporated to a thickness of 0.3 nm, and then aluminum was evaporated to a thickness of 150 nm.
- This aluminum Z lithium fluoride serves as the cathode. In this way, an organic EL device was fabricated.
- blue light emission with a luminance of 650 cdZm 2 was obtained at a voltage of 6.2 V and a current density of lOmAZcm 2 , and the luminous efficiency was 6.5 cdZA.
- Example 1 an organic EL device was produced in the same manner except that the compound shown in Table 1 was used as the host material and dopant used in the light emitting layer.
- Table 1 shows the results of conducting an energization test and measuring the half-life in the same manner as in Example 1 for the obtained device.
- Example 1 an organic EL device was produced in the same manner except that the following Comparative Compound 1 was used as the host material used for the light emitting layer and the compound (A) -101 was used as the dopant.
- Table 1 shows the results of conducting an energization test and measuring the half-life in the same manner as in Example 1 for the obtained device.
- the host material was a fluorene-based compound of the general formula (B).
- the luminance, luminous efficiency and lifetime are inferior.
- Comparative Compound 1 1 Comparative Example 2 (Example of combination of host material and dopant of Patent Document 9)
- An organic EL device was produced in the same manner as in Example 1 except that the above compound (B) -1 was used as the host material used in the light emitting layer and the following Comparative Compound-2 was used as the dopant.
- Table 1 shows the results of conducting an energization test and measuring the half-life in the same manner as in Example 1 for the obtained device.
- a transparent electrode with 80 nm thickness of indium stannate was provided on a 1 mm size glass substrate. After cleaning this glass substrate by irradiating it with ultraviolet rays and ozone, this substrate was placed in a vacuum deposition apparatus.
- tris (8-hydroxyquinolinato) aluminum was deposited to a thickness of 20 nm as an electron injection layer.
- lithium fluoride was evaporated to a thickness of 0.3 nm, and then aluminum was evaporated to a thickness of 150 nm.
- This aluminum Z lithium fluoride serves as the cathode. In this way, an organic EL device was fabricated.
- An organic EL device was produced in the same manner as in Example 8 except that the compounds shown in Table 2 were used as the host material and dopant used in the light emitting layer.
- Table 1 shows the results of conducting an energization test and measuring the half-life in the same manner as in Example 8 for the obtained device.
- An organic EL device was produced in the same manner as in Example 8 except that the following coumarin derivative (3- (2 ′ benzothiazolyl) 7-jetylaminocoumarin) was used as a dopant used in the light emitting layer.
- Table 2 shows the results of conducting an energization test and measuring the half-life in the same manner as in Example 8 for the obtained device.
- a transparent electrode with a film thickness of 180 nm and indium tin oxide was provided on a 1 mm size glass substrate. After cleaning this glass substrate by irradiating it with ultraviolet rays and ozone, this substrate was placed in a vacuum deposition apparatus.
- tris (8-hydroxyquinolinato) aluminum was deposited to a thickness of 20 nm as an electron injection layer.
- lithium fluoride was evaporated to a thickness of 0.3 nm, and then aluminum was evaporated to a thickness of 150 nm.
- This aluminum Z lithium fluoride serves as the cathode. In this way, an organic EL device was fabricated.
- Example 1 Table 3 shows the host materials and dopants used in the light-emitting layer. An organic EL device was produced in the same manner except that the compound was used.
- Table 3 shows the results of conducting an energization test and measuring half-life in the same manner as in Example 16 for the obtained device.
- Example 16 the above compound (B) -1 was used as the host material used in the light-emitting layer, and 4-disyanomethylene-6-julolidinostyryl-2-t-butyl-4H-pyran (DCJTB) was used as the dopant.
- An organic EL device was fabricated in the same manner except that it was used.
- Table 3 shows the results of conducting an energization test and measuring half-life in the same manner as in Example 16 for the obtained device.
- a glass substrate with a transparent electrode of 25 mm X 75 mm X 0.7 mm thick was subjected to ultrasonic cleaning in isopropyl alcohol for 5 minutes and then UV ozone cleaning for 30 minutes. Mount the glass substrate with the transparent electrode after cleaning on the substrate holder of the vacuum evaporation system, and first cover the transparent electrode on the surface where the transparent electrode is formed.
- a film (hereinafter abbreviated as “CuPc film”) was formed. This CuPc film functions as a hole injection layer.
- ⁇ -NPD film 4,4'-bis [N- (1-naphthyl) -N-ferroamino] biphenyl film (hereinafter abbreviated as " ⁇ -NPD film”) with a film thickness of 30 nm is formed on the CuPc film. Filmed. This ex-NPD film functions as a hole transport layer.
- Ir (ppy) the following tris (2-vinylpyridine) iridium
- a light emitting layer having a thickness of 30 nm was formed. The concentration of Ir (ppy) in the light emitting layer is 5
- a lOnm (1, 1, -bisphenol) -4-olate) bis (2-methyl-8-quinolinolato) aluminum (hereinafter abbreviated as “BAlq film”) film is formed on the light emitting layer. It was. This BAlq film functions as a hole blocking layer. Further, an aluminum complex of 8-hydroxyquinoline having a thickness of 40 nm (hereinafter abbreviated as “Alq film”) was formed on this film. This A1 q film functions as an electron injection layer. Thereafter, LiF, which is a halogenated alkali metal, was deposited to a thickness of 0.2 nm, and then aluminum was deposited to a thickness of 150 nm. This AlZLiF works as a cathode. In this way, an organic EL device was produced.
- the organic EL device of the present invention has excellent heat resistance and long life. Blue to red light emission can be obtained with high luminous efficiency. Therefore, it is useful as a practical organic EL device, and is particularly suitable for a full-color display.
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Abstract
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Cited By (5)
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WO2008136522A1 (ja) * | 2007-05-08 | 2008-11-13 | Idemitsu Kosan Co., Ltd. | ジアミノピレン誘導体、および、これを用いた有機el素子 |
WO2009008348A1 (ja) * | 2007-07-07 | 2009-01-15 | Idemitsu Kosan Co., Ltd. | 有機el素子 |
JP2010520617A (ja) * | 2007-02-28 | 2010-06-10 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | 有機電子デバイス |
JP2012044010A (ja) * | 2010-08-20 | 2012-03-01 | Toyo Ink Sc Holdings Co Ltd | 有機エレクトロルミネッセンス素子 |
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JP2010520617A (ja) * | 2007-02-28 | 2010-06-10 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | 有機電子デバイス |
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WO2009008348A1 (ja) * | 2007-07-07 | 2009-01-15 | Idemitsu Kosan Co., Ltd. | 有機el素子 |
JP2012044010A (ja) * | 2010-08-20 | 2012-03-01 | Toyo Ink Sc Holdings Co Ltd | 有機エレクトロルミネッセンス素子 |
JP2012044011A (ja) * | 2010-08-20 | 2012-03-01 | Toyo Ink Sc Holdings Co Ltd | スピロ化合物、および有機エレクトロルミネッセンス素子用材料 |
Also Published As
Publication number | Publication date |
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TW200628585A (en) | 2006-08-16 |
JP2006140235A (ja) | 2006-06-01 |
KR20070084110A (ko) | 2007-08-24 |
US20060110623A1 (en) | 2006-05-25 |
EP1811585A1 (en) | 2007-07-25 |
EP1811585A8 (en) | 2007-10-10 |
CN101057348A (zh) | 2007-10-17 |
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