JP2006303383A - 有機電界発光素子 - Google Patents
有機電界発光素子 Download PDFInfo
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- JP2006303383A JP2006303383A JP2005126732A JP2005126732A JP2006303383A JP 2006303383 A JP2006303383 A JP 2006303383A JP 2005126732 A JP2005126732 A JP 2005126732A JP 2005126732 A JP2005126732 A JP 2005126732A JP 2006303383 A JP2006303383 A JP 2006303383A
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- 150000004696 coordination complex Chemical class 0.000 claims abstract description 27
- 239000003446 ligand Substances 0.000 claims abstract description 22
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 18
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 13
- -1 rhodium ion Chemical class 0.000 claims description 111
- 239000000463 material Substances 0.000 claims description 50
- 150000001875 compounds Chemical class 0.000 claims description 35
- 125000005647 linker group Chemical group 0.000 claims description 20
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- 229910052697 platinum Inorganic materials 0.000 claims description 11
- 238000005401 electroluminescence Methods 0.000 claims description 7
- 229910052741 iridium Inorganic materials 0.000 claims description 6
- 229910052702 rhenium Inorganic materials 0.000 claims description 6
- 229910052703 rhodium Inorganic materials 0.000 claims description 6
- 239000010948 rhodium Substances 0.000 claims description 6
- MUJIDPITZJWBSW-UHFFFAOYSA-N palladium(2+) Chemical compound [Pd+2] MUJIDPITZJWBSW-UHFFFAOYSA-N 0.000 claims description 5
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 description 109
- 239000010410 layer Substances 0.000 description 92
- 238000000034 method Methods 0.000 description 54
- 229910052799 carbon Inorganic materials 0.000 description 43
- 150000001721 carbon Chemical group 0.000 description 33
- 229910052757 nitrogen Inorganic materials 0.000 description 33
- 125000004433 nitrogen atom Chemical group N* 0.000 description 33
- 238000000576 coating method Methods 0.000 description 21
- 125000004430 oxygen atom Chemical group O* 0.000 description 20
- 229910052751 metal Inorganic materials 0.000 description 19
- 239000002184 metal Substances 0.000 description 19
- 125000001072 heteroaryl group Chemical group 0.000 description 17
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- 125000003118 aryl group Chemical group 0.000 description 15
- 125000004429 atom Chemical group 0.000 description 12
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- 125000000623 heterocyclic group Chemical group 0.000 description 10
- 150000002739 metals Chemical class 0.000 description 10
- 125000001424 substituent group Chemical group 0.000 description 10
- 230000005525 hole transport Effects 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- 238000007740 vapor deposition Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000000605 extraction Methods 0.000 description 7
- 125000004437 phosphorous atom Chemical group 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
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- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 125000002947 alkylene group Chemical group 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
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- 238000010438 heat treatment Methods 0.000 description 6
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
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- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 5
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- 238000007639 printing Methods 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- 125000004434 sulfur atom Chemical group 0.000 description 5
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- ZCQWOFVYLHDMMC-UHFFFAOYSA-N Oxazole Chemical compound C1=COC=N1 ZCQWOFVYLHDMMC-UHFFFAOYSA-N 0.000 description 4
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 4
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
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- 239000000956 alloy Substances 0.000 description 4
- 125000003277 amino group Chemical group 0.000 description 4
- 125000004104 aryloxy group Chemical group 0.000 description 4
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 4
- 239000012044 organic layer Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 150000003852 triazoles Chemical class 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 125000001033 ether group Chemical group 0.000 description 3
- 125000001841 imino group Chemical group [H]N=* 0.000 description 3
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 3
- 125000001820 oxy group Chemical group [*:1]O[*:2] 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920000123 polythiophene Polymers 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 238000006862 quantum yield reaction Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UWRZIZXBOLBCON-VOTSOKGWSA-N (e)-2-phenylethenamine Chemical compound N\C=C\C1=CC=CC=C1 UWRZIZXBOLBCON-VOTSOKGWSA-N 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 2
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical compound C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 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
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical compound C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 description 2
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 2
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 2
- 125000004442 acylamino group Chemical group 0.000 description 2
- 125000004423 acyloxy group Chemical group 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 125000004466 alkoxycarbonylamino group Chemical group 0.000 description 2
- 125000004414 alkyl thio group Chemical group 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 125000004397 aminosulfonyl group Chemical group NS(=O)(=O)* 0.000 description 2
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 125000005162 aryl oxy carbonyl amino group Chemical group 0.000 description 2
- 125000005110 aryl thio group Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000007611 bar coating method Methods 0.000 description 2
- 125000001231 benzoyloxy group Chemical group C(C1=CC=CC=C1)(=O)O* 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- 230000005281 excited state Effects 0.000 description 2
- YLQWCDOCJODRMT-UHFFFAOYSA-N fluoren-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C2=C1 YLQWCDOCJODRMT-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 125000002541 furyl group Chemical group 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 238000007756 gravure coating Methods 0.000 description 2
- 125000005553 heteroaryloxy group Chemical group 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000002346 layers by function Substances 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 125000006626 methoxycarbonylamino group Chemical group 0.000 description 2
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229910052762 osmium Inorganic materials 0.000 description 2
- 229960003540 oxyquinoline Drugs 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
- 125000003356 phenylsulfanyl group Chemical group [*]SC1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 2
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 2
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
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- 229920002223 polystyrene Polymers 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical compound C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 2
- 125000005554 pyridyloxy group Chemical group 0.000 description 2
- 125000005030 pyridylthio group Chemical group N1=C(C=CC=C1)S* 0.000 description 2
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000005361 soda-lime glass Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 125000006296 sulfonyl amino group Chemical group [H]N(*)S(*)(=O)=O 0.000 description 2
- 125000004149 thio group Chemical group *S* 0.000 description 2
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- 229910001428 transition metal ion Inorganic materials 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
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- 0 *c1ccccc1 Chemical compound *c1ccccc1 0.000 description 1
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- KLCLIOISYBHYDZ-UHFFFAOYSA-N 1,4,4-triphenylbuta-1,3-dienylbenzene Chemical compound 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
- VERMWGQSKPXSPZ-BUHFOSPRSA-N 1-[(e)-2-phenylethenyl]anthracene Chemical compound C=1C=CC2=CC3=CC=CC=C3C=C2C=1\C=C\C1=CC=CC=C1 VERMWGQSKPXSPZ-BUHFOSPRSA-N 0.000 description 1
- GUPMCMZMDAGSPF-UHFFFAOYSA-N 1-phenylbuta-1,3-dienylbenzene Chemical compound C=1C=CC=CC=1[C](C=C[CH2])C1=CC=CC=C1 GUPMCMZMDAGSPF-UHFFFAOYSA-N 0.000 description 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- XWIYUCRMWCHYJR-UHFFFAOYSA-N 1h-pyrrolo[3,2-b]pyridine Chemical compound C1=CC=C2NC=CC2=N1 XWIYUCRMWCHYJR-UHFFFAOYSA-N 0.000 description 1
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- SULWTXOWAFVWOY-PHEQNACWSA-N 2,3-bis[(E)-2-phenylethenyl]pyrazine Chemical compound C=1C=CC=CC=1/C=C/C1=NC=CN=C1\C=C\C1=CC=CC=C1 SULWTXOWAFVWOY-PHEQNACWSA-N 0.000 description 1
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- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- OQQGQEPGFWNIHJ-UHFFFAOYSA-N 2-bromo-3-[tris(2-bromopyridin-3-yl)methyl]pyridine Chemical compound BrC1=NC=CC=C1C(C=1C(=NC=CC=1)Br)(C=1C(=NC=CC=1)Br)C1=CC=CN=C1Br OQQGQEPGFWNIHJ-UHFFFAOYSA-N 0.000 description 1
- 125000004974 2-butenyl group Chemical group C(C=CC)* 0.000 description 1
- XNMQEEKYCVKGBD-UHFFFAOYSA-N 2-butyne Chemical group CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 description 1
- NEAQRZUHTPSBBM-UHFFFAOYSA-N 2-hydroxy-3,3-dimethyl-7-nitro-4h-isoquinolin-1-one Chemical compound C1=C([N+]([O-])=O)C=C2C(=O)N(O)C(C)(C)CC2=C1 NEAQRZUHTPSBBM-UHFFFAOYSA-N 0.000 description 1
- 125000005979 2-naphthyloxy group Chemical group 0.000 description 1
- LERRCFJRZMZNFP-UHFFFAOYSA-N 2-phenyl-3-[tris(2-phenylpyridin-3-yl)methyl]pyridine Chemical compound C1=CC=CC=C1C1=NC=CC=C1C(C=1C(=NC=CC=1)C=1C=CC=CC=1)(C=1C(=NC=CC=1)C=1C=CC=CC=1)C1=CC=CN=C1C1=CC=CC=C1 LERRCFJRZMZNFP-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 125000001494 2-propynyl group Chemical group [H]C#CC([H])([H])* 0.000 description 1
- 125000000590 4-methylphenyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- ZYASLTYCYTYKFC-UHFFFAOYSA-N 9-methylidenefluorene Chemical compound C1=CC=C2C(=C)C3=CC=CC=C3C2=C1 ZYASLTYCYTYKFC-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
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- 229910001887 tin oxide Inorganic materials 0.000 description 1
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- 229910052723 transition metal Inorganic materials 0.000 description 1
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- 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 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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- 229910052727 yttrium Inorganic materials 0.000 description 1
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- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
【解決手段】 一対の電極間に発光層を含む少なくとも一層の有機化合物層を有する有機電界発光素子であって、該有機化合物層中に、3座以上の配位子を有し、かつ、金属イオンを2個以上有する金属錯体を含有することを特徴とする有機電界発光素子。
【選択図】 なし
Description
本発明の目的は、外部量子効率が高く、かつ、発光効率が良好な有機電界発光素子の提供にある。
1.一対の電極間に発光層を含む少なくとも一層の有機化合物層を有する有機電界発光素子であって、該有機化合物層中に、3座以上の配位子を有し、かつ、金属イオンを2個以上有する金属錯体を含有することを特徴とする有機電界発光素子。
2.前記金属錯体が、りん光発光材料であることを特徴とする上記1に記載の有機電界発光素子。
3.前記金属錯体の3座以上の配位子が、4座配位子が2個連結した配位子であることを特徴とする上記1又は2に記載の有機電界発光素子。
4.前記金属錯体の金属イオンが、ロジウムイオン、パラジウムイオン、レニウムイオン、イリジウムイオン、または、白金イオンであることを特徴とする上記1〜3のいずれかに記載の有機電界発光素子。
5.前記金属錯体が下記一般式(1)で表される化合物であることを特徴とする上記1〜4のいずれかに記載の有機電界発光素子。
6.前記一般式(1)で表される化合物が、下記一般式(2)又は下記一般式(3)で表される化合物であることを特徴とする上記5に記載の有機電界発光素子。
一般式(3)において、M31、M32は金属イオンを表す。Q31、Q32、Q33、Q34はそれぞれM31に配位する原子群を表し、Q35、Q36、Q37、Q38はそれぞれM32に配位する原子群を表す。L31、L32、L33、L34、L35、L36はそれぞれ単結合または連結基を表す。L37は連結基を表す。n31、n32は0または1を表す。n31が0の時は、Q33とQ34の間のL33を介した結合は存在しない。n32が0の時は、Q37とQ38の間のL36を介した結合は存在しない。M31−Q33間の結合、M31−Q34間の結合、M32−Q37間の結合、及びM12−Q38間の結合(点線部)は、配位結合を示す。M31−Q31間の結合、M31−Q32間の結合、M32−Q35間の結合、及びM32−Q36間の結合は、共有結合であっても良いし、配位結合であっても良いし、イオン結合であっても良い。
7.前記一般式(1)で表される化合物が、下記一般式(4)で表される化合物であることを特徴とする上記5に記載の有機電界発光素子。
りん光発光材料のりん光量子収率は、30%以上であることが好ましく、50%以上であることがより好ましく、70%以上であることがさらに好ましく、90%以上であることが特に好ましい。
なお、りん光発光材料のりん光量子収率は、例えば、有機溶媒(例えばトルエン、ジクロロエタンなど)に溶解したりん光発光材料(例えば1×10−3mol/lの濃度)を凍結脱気し、室温で光照射した時の発光量を、絶対蛍光量子収率の分かっている材料(例えばフルオレセイン、アントラセン、ローダミンなど)と比較して、測定することができる。
りん光発光材料のりん光寿命は、例えば、有機溶媒(例えばトルエン、ジクロロエタンなど)に溶解したりん光発光材料(例えば1×10−3mol/lの濃度)を凍結脱気し、室温で光照射した時の発光寿命を測定することにより、求めることができる。
配位子としては、上記の金属イオンに配位する原子群であれば特に限定されないが、例えば、炭素原子で配位する原子群、窒素原子で配位する原子群、酸素原子で配位する原子群、硫黄原子で配位する原子群、りん原子で配位する原子群等を挙げることができ、炭素原子で配位する原子群、窒素原子で配位する原子群、酸素原子で配位する原子群が好ましく、炭素原子で配位する原子群、窒素原子で配位する原子群がより好ましい。
配位により形成される金属イオンと配位子との結合としては、配位結合、共有結合、イオン結合が挙げられる。
一般式(1)において、M11、M12は金属イオンを表す。金属イオンは、遷移金属イオンであることが好ましく、ルテニウムイオン、ロジウムイオン、パラジウムイオン、銀イオン、タングステンイオン、レニウムイオン、オスミウムイオン、イリジウムイオン、白金イオン、金イオンが好ましく、ロジウムイオン、パラジウムイオン、レニウムイオン、イリジウムイオン、白金イオンがより好ましく、白金イオン、パラジウムイオンがさらに好ましく、白金イオンが特に好ましい。
Q11、Q12、Q13、Q14はM11に配位する原子群であれば、特に限定されないが、炭素原子で配位する原子群、窒素原子で配位する原子群、酸素原子で配位する原子群、硫黄原子で配位する原子群、りん原子で配位する原子群が好ましく、炭素原子で配位する原子群、窒素原子で配位する原子群、酸素原子で配位する原子群がより好ましく、炭素原子で配位する原子群、窒素原子で配位する原子群がさらに好ましい。
L13、L16は、単結合、アルキレン基、酸素連結基、窒素連結基が好ましく、アルキレン基、酸素連結基がより好ましく、アルキレン連結基が特に好ましい。
M11−Q11間の結合、M11−Q12間の結合、M11−Q15間の結合、M11−Q16間の結合は、配位結合であることが好ましく、M11−Q13間の結合、M11−Q14間の結合、M11−Q17間の結合、M11−Q18間の結合は、共有結合、または、イオン結合であることが好ましく、共有結合であることがより好ましい。
Q21、Q22、Q23、Q24はそれぞれM21に配位する原子群を表し、Q25、Q26、Q27、Q28はそれぞれM12に配位する原子群を表す。
Q31、Q32、Q33、Q34はそれぞれM31に配位する原子群を表し、Q35、Q36、Q37、Q38はそれぞれM32に配位する原子群を表す。
Q43、Q44はそれぞれM41に配位する原子群を表し、Q47、Q48はそれぞれM42に配位する原子群を表す。Q43、Q44、Q47、Q48は炭素原子で配位する原子群、窒素原子で配位する原子群が好ましく、炭素原子で配位するアリール基、炭素原子で配位するヘテロアリール基、窒素原子で配位するヘテロアリール基がより好ましく、炭素原子で配位するアリール基、炭素原子で配位するヘテロアリール基がさらに好ましく、炭素原子で配位するアリール基が特に好ましい。
陽極の膜厚は材料により適宜選択可能であるが、通常10nm〜5μmの範囲のものが好ましく、より好ましくは50nm〜1μmであり、更に好ましくは100nm〜500nmである。
陽極は洗浄その他の処理により、素子の駆動電圧を下げたり、発光効率を高めることも可能である。例えばITOの場合、UV−オゾン処理、プラズマ処理などが効果的である。
陰極の作製には電子ビーム法、スパッタリング法、抵抗加熱蒸着法、コーティング法、転写法などの方法が用いられ、金属を単体で蒸着することも、二成分以上を同時に蒸着することもできる。さらに、複数の金属を同時に蒸着して合金電極を形成することも可能であり、またあらかじめ調整した合金を蒸着させてもよい。
陽極及び陰極のシート抵抗は低い方が好ましく、数百Ω/□以下が好ましい。
また、発光層は上記金属錯体の他に、ホスト材料を含有してもよい。ホスト材料としては、電界印加時に陽極またはホール注入層、ホール輸送層から正孔を注入することができると共に陰極または電子注入層、電子輸送層から電子を注入することができる機能や、注入された電荷を移動させる機能、正孔と電子の再結合の場を提供して前述の金属錯体を発光させる機能を有するものであれば、いずれのものを用いてもよい。
ホスト材料の具体例としては、例えば、ベンゾオキサゾール、ベンゾイミダゾール、ベンゾチアゾール、スチリルベンゼン、ポリフェニル、ジフェニルブタジエン、テトラフェニルブタジエン、ナフタルイミド、クマリン、ペリレン、ペリノン、オキサジアゾール、アルダジン、ピラリジン、シクロペンタジエン、ビススチリルアントラセン、キナクリドン、ピロロピリジン、チアジアゾロピリジン、シクロペンタジエン、スチリルアミン、芳香族ジメチリディン化合物、8−キノリノールの金属錯体や希土類錯体に代表される各種金属錯体、ポリチオフェン、ポリフェニレン、ポリフェニレンビニレン等のポリマー化合物、有機シラン、イリジウムトリスフェニルピリジン錯体、及び、白金ポルフィリン錯体に代表される遷移金属錯体、及び、それらの誘導体等が挙げられる。
電子注入層、電子輸送層の形成方法としては、真空蒸着法やLB法、前記電子注入輸送材料を溶媒に溶解または分散させてコーティングする方法、インクジェット法、印刷法、転写法などが用いられる。コーティング法の場合、樹脂成分と共に溶解または分散することができ、樹脂成分としては例えば、ホール注入輸送層の場合に例示したものが適用できる。
保護層の形成方法についても特に限定はなく、例えば真空蒸着法、スパッタリング法、反応性スパッタリング法、MBE(分子線エピタキシ)法、クラスターイオンビーム法、イオンプレーティング法、プラズマ重合法(高周波励起イオンプレーティング法)、プラズマCVD法、レーザーCVD法、熱CVD法、ガスソースCVD法、コーティング法、印刷法、転写法を適用できる。
本発明の有機電界発光素子は、上記観点から、発光スペクトルの半値幅は100nm以下が好ましく、90nm以下がより好ましく、80nm以下がさらに好ましく、70nm以下が特に好ましい。
[比較例1]
Claims (5)
- 一対の電極間に発光層を含む少なくとも一層の有機化合物層を有する有機電界発光素子であって、該有機化合物層中に、3座以上の配位子を有し、かつ、金属イオンを2個以上有する金属錯体を含有することを特徴とする有機電界発光素子。
- 前記金属錯体が、りん光発光材料であることを特徴とする請求項1に記載の有機電界発光素子。
- 前記金属錯体の3座以上の配位子が、4座配位子が2個連結した配位子であることを特徴とする請求項1又は2に記載の有機電界発光素子。
- 前記金属錯体の金属イオンが、ロジウムイオン、パラジウムイオン、レニウムイオン、イリジウムイオン、または、白金イオンであることを特徴とする請求項1〜3のいずれかに記載の有機電界発光素子。
- 前記金属錯体が下記一般式(1)で表される化合物であることを特徴とする請求項1〜4のいずれかに記載の有機電界発光素子。
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WO2013038929A1 (ja) | 2011-09-12 | 2013-03-21 | 新日鉄住金化学株式会社 | 含ケイ素四員環構造を有する有機電界発光素子用材料及び有機電界発光素子 |
WO2013038804A1 (ja) | 2011-09-12 | 2013-03-21 | 新日鉄住金化学株式会社 | 有機電界発光素子 |
WO2013038843A1 (ja) | 2011-09-12 | 2013-03-21 | 新日鉄住金化学株式会社 | 有機電界発光素子 |
WO2013088934A1 (ja) | 2011-12-12 | 2013-06-20 | 新日鉄住金化学株式会社 | 有機電界発光素子用材料及びそれを用いた有機電界発光素子 |
WO2013137001A1 (ja) | 2012-03-12 | 2013-09-19 | 新日鉄住金化学株式会社 | 有機電界発光素子 |
WO2014002629A1 (ja) | 2012-06-28 | 2014-01-03 | 新日鉄住金化学株式会社 | 有機電界発光素子用材料及び有機電界発光素子 |
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