JP2014197657A - 発光素子、発光装置、電子機器、及び照明装置 - Google Patents
発光素子、発光装置、電子機器、及び照明装置 Download PDFInfo
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- JP2014197657A JP2014197657A JP2013156302A JP2013156302A JP2014197657A JP 2014197657 A JP2014197657 A JP 2014197657A JP 2013156302 A JP2013156302 A JP 2013156302A JP 2013156302 A JP2013156302 A JP 2013156302A JP 2014197657 A JP2014197657 A JP 2014197657A
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- emitting element
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- 150000002894 organic compounds Chemical class 0.000 claims abstract description 201
- 150000001875 compounds Chemical class 0.000 claims abstract description 105
- 125000006267 biphenyl group Chemical group 0.000 claims abstract description 45
- 125000001424 substituent group Chemical group 0.000 claims abstract description 33
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 claims abstract description 27
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims abstract description 18
- 230000005525 hole transport Effects 0.000 claims description 54
- 125000004432 carbon atom Chemical group C* 0.000 claims description 51
- -1 biphenyldiyl group Chemical group 0.000 claims description 48
- 125000000217 alkyl group Chemical group 0.000 claims description 45
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 40
- 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 claims description 11
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 8
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 6
- 150000002390 heteroarenes Chemical class 0.000 claims description 6
- 125000000714 pyrimidinyl group Chemical group 0.000 claims description 6
- 230000002950 deficient Effects 0.000 claims description 5
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 5
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 claims description 4
- 125000003373 pyrazinyl group Chemical group 0.000 claims description 4
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 3
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 claims description 3
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical group C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 claims description 2
- 125000001425 triazolyl group Chemical group 0.000 claims 1
- 239000010410 layer Substances 0.000 description 383
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- 239000000463 material Substances 0.000 description 96
- 238000005401 electroluminescence Methods 0.000 description 81
- 239000000126 substance Substances 0.000 description 81
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- 230000000052 comparative effect Effects 0.000 description 72
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- 229910052757 nitrogen Inorganic materials 0.000 description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 28
- 238000012360 testing method Methods 0.000 description 28
- 230000005281 excited state Effects 0.000 description 27
- 238000000605 extraction Methods 0.000 description 26
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- 238000000862 absorption spectrum Methods 0.000 description 24
- 238000000295 emission spectrum Methods 0.000 description 24
- MILUBEOXRNEUHS-UHFFFAOYSA-N iridium(3+) Chemical compound [Ir+3] MILUBEOXRNEUHS-UHFFFAOYSA-N 0.000 description 23
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- 238000005481 NMR spectroscopy Methods 0.000 description 16
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- PCLIMKBDDGJMGD-UHFFFAOYSA-N N-bromosuccinimide Chemical compound BrN1C(=O)CCC1=O PCLIMKBDDGJMGD-UHFFFAOYSA-N 0.000 description 12
- 125000005595 acetylacetonate group Chemical group 0.000 description 12
- 239000000872 buffer Substances 0.000 description 12
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- 229910052943 magnesium sulfate Inorganic materials 0.000 description 11
- 235000019341 magnesium sulphate Nutrition 0.000 description 11
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- 239000002184 metal Substances 0.000 description 11
- DHDHJYNTEFLIHY-UHFFFAOYSA-N 4,7-diphenyl-1,10-phenanthroline Chemical compound C1=CC=CC=C1C1=CC=NC2=C1C=CC1=C(C=3C=CC=CC=3)C=CN=C21 DHDHJYNTEFLIHY-UHFFFAOYSA-N 0.000 description 10
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- 125000001624 naphthyl group Chemical group 0.000 description 9
- 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 9
- 239000004065 semiconductor Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 238000007789 sealing Methods 0.000 description 8
- 238000000859 sublimation Methods 0.000 description 8
- 230000008022 sublimation Effects 0.000 description 8
- FKHIFSZMMVMEQY-UHFFFAOYSA-N talc Chemical compound [Mg+2].[O-][Si]([O-])=O FKHIFSZMMVMEQY-UHFFFAOYSA-N 0.000 description 8
- 239000010409 thin film Substances 0.000 description 8
- COIOYMYWGDAQPM-UHFFFAOYSA-N tris(2-methylphenyl)phosphane Chemical compound CC1=CC=CC=C1P(C=1C(=CC=CC=1)C)C1=CC=CC=C1C COIOYMYWGDAQPM-UHFFFAOYSA-N 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 7
- 230000001747 exhibiting effect Effects 0.000 description 7
- 239000012299 nitrogen atmosphere Substances 0.000 description 7
- 125000002524 organometallic group Chemical group 0.000 description 7
- 238000000746 purification Methods 0.000 description 7
- 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 6
- TWBPWBPGNQWFSJ-UHFFFAOYSA-N 2-phenylaniline Chemical group NC1=CC=CC=C1C1=CC=CC=C1 TWBPWBPGNQWFSJ-UHFFFAOYSA-N 0.000 description 6
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 150000004696 coordination complex Chemical class 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000007872 degassing Methods 0.000 description 6
- 150000002391 heterocyclic compounds Chemical class 0.000 description 6
- 239000003446 ligand Substances 0.000 description 6
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 6
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
- 229910052761 rare earth metal Inorganic materials 0.000 description 6
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- 239000003566 sealing material Substances 0.000 description 6
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- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- AZFHXIBNMPIGOD-UHFFFAOYSA-N 4-hydroxypent-3-en-2-one iridium Chemical compound [Ir].CC(O)=CC(C)=O.CC(O)=CC(C)=O.CC(O)=CC(C)=O AZFHXIBNMPIGOD-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
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- 230000009849 deactivation Effects 0.000 description 5
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- 239000004332 silver Substances 0.000 description 5
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 5
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- 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 4
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- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
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- VFUDMQLBKNMONU-UHFFFAOYSA-N 9-[4-(4-carbazol-9-ylphenyl)phenyl]carbazole Chemical group C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 VFUDMQLBKNMONU-UHFFFAOYSA-N 0.000 description 3
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- 150000001450 anions Chemical class 0.000 description 3
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- GQVWHWAWLPCBHB-UHFFFAOYSA-L beryllium;benzo[h]quinolin-10-olate Chemical compound [Be+2].C1=CC=NC2=C3C([O-])=CC=CC3=CC=C21.C1=CC=NC2=C3C([O-])=CC=CC3=CC=C21 GQVWHWAWLPCBHB-UHFFFAOYSA-L 0.000 description 3
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- YRPIGRRBBMFFBE-UHFFFAOYSA-N 1-(4-bromophenyl)naphthalene Chemical compound C1=CC(Br)=CC=C1C1=CC=CC2=CC=CC=C12 YRPIGRRBBMFFBE-UHFFFAOYSA-N 0.000 description 2
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- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- YGNUPJXMDOFFDO-UHFFFAOYSA-N n,4-diphenylaniline Chemical compound C=1C=C(C=2C=CC=CC=2)C=CC=1NC1=CC=CC=C1 YGNUPJXMDOFFDO-UHFFFAOYSA-N 0.000 description 1
- CMLCVSPDRZVSRT-UHFFFAOYSA-N n,9-diphenyl-n-(9,9'-spirobi[fluorene]-2-yl)carbazol-3-amine Chemical compound C1=CC=CC=C1N(C=1C=C2C3=CC=CC=C3N(C=3C=CC=CC=3)C2=CC=1)C1=CC=C(C=2C(=CC=CC=2)C23C4=CC=CC=C4C4=CC=CC=C43)C2=C1 CMLCVSPDRZVSRT-UHFFFAOYSA-N 0.000 description 1
- BRWMJONFCOEWCK-UHFFFAOYSA-N n-[4-(9-phenylcarbazol-3-yl)phenyl]-n-(4-phenylphenyl)-9,9'-spirobi[fluorene]-2-amine Chemical compound C1=CC=CC=C1C1=CC=C(N(C=2C=CC(=CC=2)C=2C=C3C4=CC=CC=C4N(C=4C=CC=CC=4)C3=CC=2)C=2C=C3C4(C5=CC=CC=C5C5=CC=CC=C54)C4=CC=CC=C4C3=CC=2)C=C1 BRWMJONFCOEWCK-UHFFFAOYSA-N 0.000 description 1
- VZYZZKOUCVXTOJ-UHFFFAOYSA-N n-[4-[4-(n-(9,9-dimethylfluoren-2-yl)anilino)phenyl]phenyl]-9,9-dimethyl-n-phenylfluoren-2-amine Chemical group C1=C2C(C)(C)C3=CC=CC=C3C2=CC=C1N(C=1C=CC(=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=C2C(C)(C)C3=CC=CC=C3C2=CC=1)C1=CC=CC=C1 VZYZZKOUCVXTOJ-UHFFFAOYSA-N 0.000 description 1
- HUMMCEUVDBVXTQ-UHFFFAOYSA-N naphthalen-1-ylboronic acid Chemical compound C1=CC=C2C(B(O)O)=CC=CC2=C1 HUMMCEUVDBVXTQ-UHFFFAOYSA-N 0.000 description 1
- FPOBXNYAWLLCGZ-UHFFFAOYSA-N nickel(2+);1,2,3,4,5-pentamethylcyclopenta-1,3-diene Chemical compound [Ni+2].CC=1C(C)=C(C)[C-](C)C=1C.CC=1C(C)=C(C)[C-](C)C=1C FPOBXNYAWLLCGZ-UHFFFAOYSA-N 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
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- 238000007645 offset printing Methods 0.000 description 1
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- NGSMDHYQABJENH-UHFFFAOYSA-N oxovanadium(2+) 6,15,24,33-tetraphenoxy-2,11,20,29,37,39-hexaza-38,40-diazanidanonacyclo[28.6.1.13,10.112,19.121,28.04,9.013,18.022,27.031,36]tetraconta-1,3,5,7,9,11,13(18),14,16,19(39),20,22(27),23,25,28,30(37),31(36),32,34-nonadecaene Chemical compound [V+2]=O.C=1C=C2C(N=C3[N-]C(C4=CC=C(OC=5C=CC=CC=5)C=C43)=NC3=NC(C4=CC=C(OC=5C=CC=CC=5)C=C43)=NC=3[N-]C(=C4C=CC(OC=5C=CC=CC=5)=CC4=3)N=3)=NC=3C2=CC=1OC1=CC=CC=C1 NGSMDHYQABJENH-UHFFFAOYSA-N 0.000 description 1
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- AZVQGIPHTOBHAF-UHFFFAOYSA-N perfluoropentacene Chemical compound FC1=C(F)C(F)=C(F)C2=C(F)C3=C(F)C4=C(F)C5=C(F)C(F)=C(F)C(F)=C5C(F)=C4C(F)=C3C(F)=C21 AZVQGIPHTOBHAF-UHFFFAOYSA-N 0.000 description 1
- 150000005359 phenylpyridines Chemical class 0.000 description 1
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- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- VLRICFVOGGIMKK-UHFFFAOYSA-N pyrazol-1-yloxyboronic acid Chemical compound OB(O)ON1C=CC=N1 VLRICFVOGGIMKK-UHFFFAOYSA-N 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004528 spin coating 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
- 238000006467 substitution reaction Methods 0.000 description 1
- HKCRVXUAKWXBLE-UHFFFAOYSA-N terbium(3+) Chemical compound [Tb+3] HKCRVXUAKWXBLE-UHFFFAOYSA-N 0.000 description 1
- 150000000000 tetracarboxylic acids Chemical class 0.000 description 1
- UGNWTBMOAKPKBL-UHFFFAOYSA-N tetrachloro-1,4-benzoquinone Chemical compound ClC1=C(Cl)C(=O)C(Cl)=C(Cl)C1=O UGNWTBMOAKPKBL-UHFFFAOYSA-N 0.000 description 1
- PCCVSPMFGIFTHU-UHFFFAOYSA-N tetracyanoquinodimethane Chemical compound N#CC(C#N)=C1C=CC(=C(C#N)C#N)C=C1 PCCVSPMFGIFTHU-UHFFFAOYSA-N 0.000 description 1
- JIIYLLUYRFRKMG-UHFFFAOYSA-N tetrathianaphthacene Chemical compound C1=CC=CC2=C3SSC(C4=CC=CC=C44)=C3C3=C4SSC3=C21 JIIYLLUYRFRKMG-UHFFFAOYSA-N 0.000 description 1
- LLVONELOQJAYBZ-UHFFFAOYSA-N tin(ii) phthalocyanine Chemical compound N1=C(C2=CC=CC=C2C2=NC=3C4=CC=CC=C4C(=N4)N=3)N2[Sn]N2C4=C(C=CC=C3)C3=C2N=C2C3=CC=CC=C3C1=N2 LLVONELOQJAYBZ-UHFFFAOYSA-N 0.000 description 1
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- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 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
- QGJSAGBHFTXOTM-UHFFFAOYSA-K trifluoroerbium Chemical compound F[Er](F)F QGJSAGBHFTXOTM-UHFFFAOYSA-K 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- HTPBWAPZAJWXKY-UHFFFAOYSA-L zinc;quinolin-8-olate Chemical compound [Zn+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 HTPBWAPZAJWXKY-UHFFFAOYSA-L 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Abstract
【解決手段】一対の電極間に、発光層を有し、該発光層は、第1の有機化合物、第2の有機化合物、及び燐光性化合物を含み、該第1の有機化合物は、一般式(G0)で表される化合物であり、該第1の有機化合物の分子量は、500以上2000以下であり、該第2の有機化合物は、電子輸送性を有する化合物である発光素子。一般式(G0)中、Ar1及びAr2は、それぞれ独立に、フルオレニル基、スピロフルオレニル基、又はビフェニル基を表し、Ar3は、カルバゾール骨格を含む置換基を表す。
【選択図】なし
Description
本実施の形態では、本発明の一態様の発光素子について図1を用いて説明する。
第1の有機化合物は一般式(G0)で表される化合物であり、第1の有機化合物の分子量は500以上2000以下である。
第2の有機化合物は電子輸送性を有する化合物である。電子輸送性を有する化合物としては、含窒素複素芳香族化合物のようなπ電子不足型複素芳香族化合物や、キノリン骨格又はベンゾキノリン骨格を有する金属錯体、オキサゾール系配位子又はチアゾール系配位子を有する金属錯体などを用いることができる。
発光層303に用いることができる燐光性化合物の一例を挙げる。例えば、440nm〜520nmに発光のピークを有する燐光性化合物としては、トリス{2−[5−(2−メチルフェニル)−4−(2,6−ジメチルフェニル)−4H−1,2,4−トリアゾール−3−イル−κN2]フェニル−κC}イリジウム(III)(略称:[Ir(mpptz−dmp)3])、トリス(5−メチル−3,4−ジフェニル−4H−1,2,4−トリアゾラト)イリジウム(III)(略称:[Ir(Mptz)3])、トリス[4−(3−ビフェニル)−5−イソプロピル−3−フェニル−4H−1,2,4−トリアゾラト]イリジウム(III)(略称:[Ir(iPrptz−3b)3])のような4H−トリアゾール骨格を有する有機金属イリジウム錯体や、トリス[3−メチル−1−(2−メチルフェニル)−5−フェニル−1H−1,2,4−トリアゾラト]イリジウム(III)(略称:[Ir(Mptz1−mp)3])、トリス(1−メチル−5−フェニル−3−プロピル−1H−1,2,4−トリアゾラト)イリジウム(III)(略称:[Ir(Prptz1−Me)3])のような1H−トリアゾール骨格を有する有機金属イリジウム錯体や、fac−トリス[1−(2,6−ジイソプロピルフェニル)−2−フェニル−1H−イミダゾール]イリジウム(III)(略称:[Ir(iPrpmi)3])、トリス[3−(2,6−ジメチルフェニル)−7−メチルイミダゾ[1,2−f]フェナントリジナト]イリジウム(III)(略称:[Ir(dmpimpt−Me)3])のようなイミダゾール骨格を有する有機金属イリジウム錯体や、ビス[2−(4’,6’−ジフルオロフェニル)ピリジナト−N,C2’]イリジウム(III)テトラキス(1−ピラゾリル)ボラート(略称:FIr6)、ビス[2−(4’,6’−ジフルオロフェニル)ピリジナト−N,C2’]イリジウム(III)ピコリナート(略称:FIrpic)、ビス{2−[3’,5’−ビス(トリフルオロメチル)フェニル]ピリジナト−N,C2’}イリジウム(III)ピコリナート(略称:[Ir(CF3ppy)2(pic)])、ビス[2−(4’,6’−ジフルオロフェニル)ピリジナト−N,C2’]イリジウム(III)アセチルアセトナート(略称:FIracac)のような電子吸引基を有するフェニルピリジン誘導体を配位子とする有機金属イリジウム錯体が挙げられる。上述した中でも、4H−トリアゾール骨格を有する有機金属イリジウム錯体は、信頼性や発光効率が優れるため、特に好ましい。
陽極として機能する電極(本実施の形態では第1の電極201)は、導電性を有する金属、合金、導電性化合物等を1種又は複数種用いて形成することができる。特に、仕事関数の大きい(4.0eV以上)材料を用いることが好ましい。例えば、インジウムスズ酸化物(ITO:Indium Tin Oxide)、珪素もしくは酸化珪素を含有したインジウムスズ酸化物、インジウム亜鉛酸化物、酸化タングステン及び酸化亜鉛を含有した酸化インジウム、グラフェン、金、白金、ニッケル、タングステン、クロム、モリブデン、鉄、コバルト、銅、パラジウム、又は金属材料の窒化物(例えば、窒化チタン)等が挙げられる。
陰極として機能する電極(本実施の形態では第2の電極205)は、導電性を有する金属、合金、導電性化合物などを1種又は複数種用いて形成することができる。特に、仕事関数が小さい(3.8eV以下)材料を用いることが好ましい。例えば、元素周期表の第1族又は第2族に属する元素(例えば、リチウム、セシウム等のアルカリ金属、カルシウム、ストロンチウム等のアルカリ土類金属、マグネシウム等)、これら元素を含む合金(例えば、Mg−Ag、Al−Li)、ユーロピウム、イッテルビウム等の希土類金属、これら希土類金属を含む合金、アルミニウム、銀等を用いることができる。
正孔注入層301は、正孔注入性の高い物質を含む層である。
正孔輸送層302は、正孔輸送性の高い物質を含む層である。正孔輸送性の高い物質としては、電子よりも正孔の輸送性の高い物質であれば良く、特に、10−6cm2/Vs以上の正孔移動度を有する物質であることが好ましい。
電子輸送層304は、電子輸送性の高い物質を含む層である。
電子注入層305は、電子注入性の高い物質を含む層である。
正孔注入層を構成する電荷発生領域や、電荷発生領域308は、正孔輸送性の高い物質とアクセプター性物質(電子受容体)を含む領域である。アクセプター性物質は、正孔輸送性の高い物質に対して質量比で0.1以上4.0以下の比率で添加されていることが好ましい。
電子注入バッファー層306は、電子注入性の高い物質を含む層である。電子注入バッファー層306は、電荷発生領域308からEL層203への電子の注入を容易にする。電子注入性の高い物質としては、前述の材料を用いることができる。また、電子注入バッファー層306は、前述の電子輸送性の高い物質とドナー性物質を含む構成としても良い。
電子リレー層307では、電荷発生領域308においてアクセプター性物質が引き抜いた電子を速やかに受け取る。
本実施の形態では、本発明の一態様の発光素子について図2を用いて説明する。
本実施の形態では、本発明の一態様の発光装置について図3を用いて説明する。図3(A)は、本発明の一態様の発光装置を示す平面図であり、図3(B)は、図3(A)を一点鎖線A−Bで切断した断面図である。
本実施の形態では、本発明の一態様の発光装置について図4を用いて説明する。図4(A)は、本発明の一態様の発光装置を示す平面図であり、図4(B)は、図4(A)を一点鎖線C−Dで切断した断面図である。
本実施の形態では、本発明の一態様を適用した発光装置を用いた電子機器及び照明装置の一例について、図5及び図6を用いて説明する。
まず、ガラス基板1100上に、酸化珪素を含むインジウム錫酸化物(ITSO)をスパッタリング法にて成膜し、第1の電極1101を形成した。なお、その膜厚は110nmとし、電極面積は2mm×2mmとした。ここで、第1の電極1101は、発光素子の陽極として機能する電極である。
比較発光素子2の発光層1113は、2mDBTBPDBq−II、4、4’−ジ(1−ナフチル)−4’’−(9−フェニル−9H−カルバゾール−3−イル)トリフェニルアミン(略称:PCBNBB)、及び[Ir(dppm)2(acac)]を共蒸着することで形成した。ここで、2mDBTBPDBq−II、PCBNBB及び[Ir(dppm)2(acac)]の重量比は、0.8:0.2:0.05(=2mDBTBPDBq−II:PCBNBB:[Ir(dppm)2(acac)])となるように調節した。また、発光層1113の膜厚は40nmとした。発光層1113以外は発光素子1と同様に作製した。
比較発光素子3の発光層1113は、2mDBTBPDBq−II、N−[4−(9−フェニル−9H−カルバゾール−3−イル)フェニル]−9,9−ジメチル−N−[4−(1−ナフチル)フェニル]−9H−フルオレン−2−アミン(略称:PCBNBF)、及び[Ir(dppm)2(acac)]を共蒸着することで形成した。ここで、2mDBTBPDBq−II、PCBNBF及び[Ir(dppm)2(acac)]の重量比は、0.8:0.2:0.05(=2mDBTBPDBq−II:PCBNBF:[Ir(dppm)2(acac)])となるように調節した。また、発光層1113の膜厚は40nmとした。発光層1113以外は発光素子1と同様に作製した。
まず、発光素子1と同様に、ガラス基板1100上に第1の電極1101及び正孔注入層1111を作製した。
比較発光素子5の正孔輸送層1112は、PCBNBBを膜厚20nmとなるように成膜することで形成した。また、発光層1113は、2mDBTBPDBq−II、PCBNBB、及び[Ir(tBuppm)2(acac)]を共蒸着することで形成した。ここで、2mDBTBPDBq−II、PCBNBB及び[Ir(tBuppm)2(acac)]の重量比が、0.7:0.3:0.05(=2mDBTBPDBq−II:PCBNBB:[Ir(tBuppm)2(acac)])となるように調整して成膜した厚さ20nmの層と、該重量比が、0.8:0.2:0.05(=2mDBTBPDBq−II:PCBNBB:[Ir(tBuppm)2(acac)])となるように調節して成膜した厚さ20nmの層とを積層した。正孔輸送層1112及び発光層1113以外は発光素子4と同様に作製した。
まず、発光素子1と同様に、ガラス基板1100上に第1の電極1101及び正孔注入層1111を作製した。
発光素子7の正孔輸送層1112は、BPAFLPを膜厚20nmとなるように成膜することで形成した。正孔輸送層1112以外は発光素子6と同様に作製した。
まず、発光素子1と同様に、ガラス基板1100上に第1の電極1101、正孔注入層1111、及び正孔輸送層1112を作製した。ただし、正孔注入層1111の膜厚は20nmとした。
比較発光素子9の発光層1113は、2mDBTBPDBq−II及び[Ir(dppm)2(acac)]を共蒸着することで形成した。ここで、2mDBTBPDBq−II及び[Ir(dppm)2(acac)]の重量比は、1:0.05(=2mDBTBPDBq−II:[Ir(dppm)2(acac)])となるように調節した。また、発光層1113の膜厚は40nmとした。また、比較発光素子9の電子輸送層1114は、2mDBTBPDBq−IIを膜厚10nmとなるように成膜し、さらに、BPhenを膜厚15nmとなるように成膜した。発光層1113及び電子輸送層1114以外は発光素子8と同様に作製した。
発光素子10では、2mDBTBPDBq−II、N−(4−ビフェニル)−N−(9,9−ジメチル−9H−フルオレン−2−イル)−9−フェニル−9H−カルバゾール−3−アミン(略称:PCBiF)、及び[Ir(dppm)2(acac)]を共蒸着し、正孔輸送層1112上に発光層1113を形成した。ここでは、2mDBTBPDBq−II、PCBiF、及び[Ir(dppm)2(acac)]の重量比が、0.7:0.3:0.05(=2mDBTBPDBq−II:PCBiF:[Ir(dppm)2(acac)])となるように調整して成膜した厚さ20nmの層と、該重量比が、0.8:0.2:0.05(=2mDBTBPDBq−II:PCBiF:[Ir(dppm)2(acac)])となるように調節して成膜した厚さ20nmの層とを積層した。
発光素子11では、2mDBTBPDBq−II、N−(4−ビフェニル)−N−(9,9’−スピロビ[9H−フルオレン]−2−イル)−9−フェニル−9H−カルバゾール−3−アミン(略称:PCBiSF)、及び[Ir(dppm)2(acac)]を共蒸着し、正孔輸送層1112上に発光層1113を形成した。ここでは、2mDBTBPDBq−II、PCBiSF、及び[Ir(dppm)2(acac)]の重量比が、0.7:0.3:0.05(=2mDBTBPDBq−II:PCBiSF:[Ir(dppm)2(acac)])となるように調整して成膜した厚さ20nmの層と、該重量比が、0.8:0.2:0.05(=2mDBTBPDBq−II:PCBiSF:[Ir(dppm)2(acac)])となるように調節して成膜した厚さ20nmの層とを積層した。
比較発光素子12では、2mDBTBPDBq−II、2−[N−(9−フェニルカルバゾール−3−イル)−N−フェニルアミノ]−スピロ−9,9’−ビフルオレン(略称:PCASF)、及び[Ir(dppm)2(acac)]を共蒸着し、正孔輸送層1112上に発光層1113を形成した。ここでは、2mDBTBPDBq−II、PCASF、及び[Ir(dppm)2(acac)]の重量比が、0.7:0.3:0.05(=2mDBTBPDBq−II:PCASF:[Ir(dppm)2(acac)])となるように調整して成膜した厚さ20nmの層と、該重量比が、0.8:0.2:0.05(=2mDBTBPDBq−II:PCASF:[Ir(dppm)2(acac)])となるように調節して成膜した厚さ20nmの層とを積層した。
発光素子13では、2mDBTBPDBq−II、PCBBiF、及び[Ir(tBuppm)2(acac)]を共蒸着し、正孔輸送層1112上に発光層1113を形成した。ここでは、2mDBTBPDBq−II、PCBBiF、及び[Ir(tBuppm)2(acac)]の重量比が、0.7:0.3:0.05(=2mDBTBPDBq−II:PCBBiF:[Ir(tBuppm)2(acac)])となるように調整して成膜した厚さ20nmの層と、該重量比が、0.8:0.2:0.05(=2mDBTBPDBq−II:PCBBiF:[Ir(tBuppm)2(acac)])となるように調節して成膜した厚さ20nmの層とを積層した。
発光素子14では、2mDBTBPDBq−II、PCBiF、及び[Ir(tBuppm)2(acac)]を共蒸着し、正孔輸送層1112上に発光層1113を形成した。ここでは、2mDBTBPDBq−II、PCBiF、及び[Ir(tBuppm)2(acac)]の重量比が、0.7:0.3:0.05(=2mDBTBPDBq−II:PCBiF:[Ir(tBuppm)2(acac)])となるように調整して成膜した厚さ20nmの層と、該重量比が、0.8:0.2:0.05(=2mDBTBPDBq−II:PCBiF:[Ir(tBuppm)2(acac)])となるように調節して成膜した厚さ20nmの層とを積層した。
発光素子15では、2mDBTBPDBq−II、PCBiSF、及び[Ir(tBuppm)2(acac)]を共蒸着し、正孔輸送層1112上に発光層1113を形成した。ここでは、2mDBTBPDBq−II、PCBiSF、及び[Ir(tBuppm)2(acac)]の重量比が、0.7:0.3:0.05(=2mDBTBPDBq−II:PCBiSF:[Ir(tBuppm)2(acac)])となるように調整して成膜した厚さ20nmの層と、該重量比が、0.8:0.2:0.05(=2mDBTBPDBq−II:PCBiSF:[Ir(tBuppm)2(acac)])となるように調節して成膜した厚さ20nmの層とを積層した。
比較発光素子16では、2mDBTBPDBq−II、PCASF、及び[Ir(tBuppm)2(acac)]を共蒸着し、正孔輸送層1112上に発光層1113を形成した。ここでは、2mDBTBPDBq−II、PCASF、及び[Ir(tBuppm)2(acac)]の重量比が、0.7:0.3:0.05(=2mDBTBPDBq−II:PCASF:[Ir(tBuppm)2(acac)])となるように調整して成膜した厚さ20nmの層と、該重量比が、0.8:0.2:0.05(=2mDBTBPDBq−II:PCASF:[Ir(tBuppm)2(acac)])となるように調節して成膜した厚さ20nmの層とを積層した。
まず、発光素子8と同様に、ガラス基板1100上に第1の電極1101、正孔注入層1111、及び正孔輸送層1112を作製した。
実施例1、実施例2及び実施例4で用いた下記構造式(128)に示されるN−(1,1’−ビフェニル−4−イル)−N−[4−(9−フェニル−9H−カルバゾール−3−イル)フェニル]−9,9−ジメチル−9H−フルオレン−2−アミン(略称:PCBBiF)の合成方法について説明する。
ステップ1の合成スキームを(x−1)に示す。
ステップ2の合成スキームを(x−2)に示す。
ステップ3の合成スキームを(x−3)に示す。
1H NMR(CDCl3,500MHz):δ=1,45(s、6H)、7.18(d、J=8.0Hz、1H)、7.27−7.32(m、8H)、7.40−7.50(m、7H)、7.52−7.53(m、2H)、7.59−7.68(m、12H)、8.19(d、J=8.0Hz、1H)、8.36(d、J=1.1Hz、1H)。
実施例1で用いた9,9−ジメチル−N−[4−(1−ナフチル)フェニル]−N−[4−(9−フェニル−9H−カルバゾール−3−イル)フェニル]−9H−フルオレン−2−アミン(略称:PCBNBF)の合成方法について説明する。
ステップ1の合成スキームを(y−1)に示す。
ステップ2の合成スキームを(y−2)に示す。
ステップ3の合成スキームを(y−3)に示す。
ステップ4の合成スキームを(y−4)に示す。
1H NMR(CDCl3,500MHz):δ=1.50(s、6H)、7.21(dd、J=8.0Hz、1.6Hz、1H)、7.26−7.38(m、8H)、7.41−7.44(m、5H)、7.46−7.55(m、6H)、7.59−7.69(m、9H)、7.85(d、J=8.0Hz、1H)、7.91(dd、J=7.5Hz、1.7Hz、1H)、8.07−8.09(m、1H)、8.19(d、J=8.0Hz、1H)、8.37(d、J=1.7Hz、1H)。
実施例3で用いた下記構造式(119)に示されるN−(1,1’−ビフェニル−4−イル)−N−[4−(9−フェニル−9H−カルバゾール−3−イル)フェニル]−9,9’−スピロビ[9H−フルオレン]−2−アミン(略称:PCBBiSF)の合成方法について説明する。
ステップ1の合成スキームを(z−1)に示す。
ステップ2の合成スキームを(z−2)に示す。
ステップ3の合成スキームを(z−3)に示す。
1H NMR(CDCl3,500MHz):δ=6.67−6.69(m、2H)、6.84(d、J1=7.5Hz、2H)、7.04−7.11(m、5H)、7.13−7.17(m、3H)、7.28−7.45(m、12H)、7.46−7.53(m、5H)、7.57−7.64(m、5H)、7.74−7.77(m、4H)、8.17(d、J1=7.5Hz、1H)、8.27(d、J1=1.5Hz、1H)。
203 EL層
203a 第1のEL層
203b 第2のEL層
205 第2の電極
207 中間層
213 発光層
221 第1の有機化合物
222 第2の有機化合物
223 燐光性化合物
301 正孔注入層
302 正孔輸送層
303 発光層
304 電子輸送層
305 電子注入層
306 電子注入バッファー層
307 電子リレー層
308 電荷発生領域
401 支持基板
403 発光素子
405 封止基板
407 封止材
409a 第1の端子
409b 第2の端子
411a 光取り出し構造
411b 光取り出し構造
413 平坦化層
415 空間
417 補助配線
419 絶縁層
421 第1の電極
423 EL層
425 第2の電極
501 支持基板
503 発光素子
505 封止基板
507 封止材
509 FPC
511 絶縁層
513 絶縁層
515 空間
517 配線
519 隔壁
521 第1の電極
523 EL層
525 第2の電極
531 ブラックマトリクス
533 カラーフィルタ
535 オーバーコート層
541a トランジスタ
541b トランジスタ
542 トランジスタ
543 トランジスタ
551 発光部
552 駆動回路部
553 駆動回路部
1100 ガラス基板
1101 第1の電極
1103 第2の電極
1111 正孔注入層
1112 正孔輸送層
1113 発光層
1114 電子輸送層
1115 電子注入層
7100 テレビジョン装置
7101 筐体
7102 表示部
7103 スタンド
7111 リモコン操作機
7200 コンピュータ
7201 本体
7202 筐体
7203 表示部
7204 キーボード
7205 外部接続ポート
7206 ポインティングデバイス
7300 携帯型ゲーム機
7301a 筐体
7301b 筐体
7302 連結部
7303a 表示部
7303b 表示部
7304 スピーカ部
7305 記録媒体挿入部
7306 操作キー
7307 接続端子
7308 センサ
7400 携帯電話機
7401 筐体
7402 表示部
7403 操作ボタン
7404 外部接続ポート
7405 スピーカ
7406 マイク
7500 タブレット型端末
7501a 筐体
7501b 筐体
7502a 表示部
7502b 表示部
7503 軸部
7504 電源
7505 操作キー
7506 スピーカ
7601 照明部
7602 傘
7603 可変アーム
7604 支柱
7605 台
7606 電源
7701 照明器具
7702 照明器具
7703 卓上照明器具
Claims (12)
- 一対の電極間に、発光層を有し、
前記発光層は、第1の有機化合物、第2の有機化合物、及び燐光性化合物を含み、
前記第1の有機化合物は、一般式(G0)で表される化合物であり、
前記第1の有機化合物の分子量は、500以上2000以下であり、
前記第2の有機化合物は、電子輸送性を有する化合物である発光素子。
(一般式(G0)中、Ar1及びAr2は、それぞれ独立に、置換もしくは無置換のフルオレニル基、置換もしくは無置換のスピロフルオレニル基、又は置換もしくは無置換のビフェニル基を表し、Ar3は、カルバゾール骨格を含む置換基を表す。) - 一対の電極間に、発光層を有し、
前記発光層は、第1の有機化合物、第2の有機化合物、及び燐光性化合物を含み、
前記第1の有機化合物は、一般式(G1)で表される有機化合物であり、
前記第1の有機化合物の分子量は、500以上2000以下であり、
前記第2の有機化合物は、電子輸送性を有する化合物である発光素子。
(一般式(G1)中、Ar1及びAr2は、それぞれ独立に、置換もしくは無置換のフルオレニル基、置換もしくは無置換のスピロフルオレニル基、又は置換もしくは無置換のビフェニル基を表し、αは、置換もしくは無置換のフェニレン基、又は置換もしくは無置換のビフェニルジイル基を表し、nは、0又は1を表し、Aは、置換又は無置換の3−カルバゾリル基を表す。) - 一対の電極間に、発光層を有し、
前記発光層は、第1の有機化合物、第2の有機化合物、及び燐光性化合物を含み、
前記第1の有機化合物は、一般式(G2)で表される有機化合物であり、
前記第1の有機化合物の分子量は、500以上2000以下であり、
前記第2の有機化合物は、電子輸送性を有する化合物である発光素子。
(一般式(G2)中、Ar1及びAr2は、それぞれ独立に、置換もしくは無置換のフルオレニル基、置換もしくは無置換のスピロフルオレニル基、又は置換もしくは無置換のビフェニル基を表し、R1〜R4及びR11〜R17は、それぞれ独立に、水素、炭素数1〜10のアルキル基、無置換もしくは炭素数1〜10のアルキル基が1以上置換したフェニル基、又は無置換もしくは炭素数1〜10のアルキル基が1以上置換したビフェニル基を表し、Ar4は、炭素数1〜10のアルキル基、無置換もしくは炭素数1〜10のアルキル基が1以上置換したフェニル基、無置換もしくは炭素数1〜10のアルキル基が1以上置換したビフェニル基、又は無置換もしくは炭素数1〜10のアルキル基が1以上置換したターフェニル基を表す。) - 一対の電極間に、発光層を有し、
前記発光層は、第1の有機化合物、第2の有機化合物、及び燐光性化合物を含み、
前記第1の有機化合物は、一般式(G3)で表される有機化合物であり、
前記第1の有機化合物の分子量は、500以上2000以下であり、
前記第2の有機化合物は、電子輸送性を有する化合物である発光素子。
(一般式(G3)中、Ar1及びAr2は、それぞれ独立に、置換もしくは無置換のフルオレニル基、置換もしくは無置換のスピロフルオレニル基、又は置換もしくは無置換のビフェニル基を表し、R1〜R4、R11〜R17及びR21〜R25は、それぞれ独立に、水素、炭素数1〜10のアルキル基、無置換もしくは炭素数1〜10のアルキル基が1以上置換したフェニル基、又は無置換もしくは炭素数1〜10のアルキル基が1以上置換したビフェニル基を表す。) - 請求項1乃至4のいずれか一項において、
前記Ar1及び前記Ar2は、それぞれ独立に、置換もしくは無置換の2−フルオレニル基、置換もしくは無置換のスピロ−9,9’−ビフルオレン−2−イル基、又はビフェニル−4−イル基である発光素子。 - 請求項1乃至5のいずれか一項において、
前記発光層と接する正孔輸送層を有し、
前記正孔輸送層は、第3の有機化合物を含み、
前記第3の有機化合物は、一般式(G0)で表される有機化合物であり、
前記第3の有機化合物の分子量は、500以上2000以下である発光素子。
(一般式(G0)中、Ar1及びAr2は、それぞれ独立に、置換もしくは無置換のフルオレニル基、置換もしくは無置換のスピロフルオレニル基、又は置換もしくは無置換のビフェニル基を表し、Ar3は、カルバゾール骨格を含む置換基を表す。) - 請求項1乃至6のいずれか一項において、
前記第1の有機化合物と、前記第2の有機化合物は励起錯体を形成する組み合わせである発光素子。 - 請求項1乃至7のいずれか一項において、
前記電子輸送性を有する化合物は、π電子不足型複素芳香族化合物である発光素子。 - 請求項8において、
前記π電子不足型複素芳香族化合物は、キノキサリン骨格、ジベンゾキノキサリン骨格、キノリン骨格、ピリミジン骨格、ピラジン骨格、ピリジン骨格、ジアゾ−ル骨格、又はトリアゾール骨格を含む化合物である発光素子。 - 請求項1乃至9のいずれか一項に記載の発光素子を発光部に備える発光装置。
- 請求項10に記載の発光装置を表示部に備える電子機器。
- 請求項10に記載の発光装置を発光部に備える照明装置。
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