JP2009200498A - 有機発光素子 - Google Patents
有機発光素子 Download PDFInfo
- Publication number
- JP2009200498A JP2009200498A JP2009038444A JP2009038444A JP2009200498A JP 2009200498 A JP2009200498 A JP 2009200498A JP 2009038444 A JP2009038444 A JP 2009038444A JP 2009038444 A JP2009038444 A JP 2009038444A JP 2009200498 A JP2009200498 A JP 2009200498A
- Authority
- JP
- Japan
- Prior art keywords
- group
- light emitting
- organic light
- host
- emitting device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000010410 layer Substances 0.000 claims abstract description 151
- 239000002019 doping agent Substances 0.000 claims abstract description 57
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 239000012044 organic layer Substances 0.000 claims abstract description 8
- -1 phthalocyanine compound Chemical class 0.000 claims description 52
- 125000000217 alkyl group Chemical group 0.000 claims description 24
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 23
- 125000003118 aryl group Chemical group 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 229940126214 compound 3 Drugs 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 13
- 125000001072 heteroaryl group Chemical group 0.000 claims description 12
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 claims description 12
- 125000003277 amino group Chemical group 0.000 claims description 10
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 125000003545 alkoxy group Chemical group 0.000 claims description 7
- 229920000767 polyaniline Polymers 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 125000001153 fluoro group Chemical group F* 0.000 claims description 5
- 125000005549 heteroarylene group Chemical group 0.000 claims description 5
- 230000005525 hole transport Effects 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- MAGFQRLKWCCTQJ-UHFFFAOYSA-M 4-ethenylbenzenesulfonate Chemical compound [O-]S(=O)(=O)C1=CC=C(C=C)C=C1 MAGFQRLKWCCTQJ-UHFFFAOYSA-M 0.000 claims description 4
- 125000004450 alkenylene group Chemical group 0.000 claims description 4
- 125000002947 alkylene group Chemical group 0.000 claims description 4
- 150000001491 aromatic compounds Chemical class 0.000 claims description 4
- 125000000732 arylene group Chemical group 0.000 claims description 4
- 125000005843 halogen group Chemical group 0.000 claims description 4
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 3
- MIOPJNTWMNEORI-GMSGAONNSA-N (S)-camphorsulfonic acid Chemical compound C1C[C@@]2(CS(O)(=O)=O)C(=O)C[C@@H]1C2(C)C MIOPJNTWMNEORI-GMSGAONNSA-N 0.000 claims description 2
- DIVZFUBWFAOMCW-UHFFFAOYSA-N 4-n-(3-methylphenyl)-1-n,1-n-bis[4-(n-(3-methylphenyl)anilino)phenyl]-4-n-phenylbenzene-1,4-diamine Chemical compound CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)N(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 DIVZFUBWFAOMCW-UHFFFAOYSA-N 0.000 claims description 2
- 238000004770 highest occupied molecular orbital Methods 0.000 claims 3
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims 1
- AWXGSYPUMWKTBR-UHFFFAOYSA-N 4-carbazol-9-yl-n,n-bis(4-carbazol-9-ylphenyl)aniline Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(N(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 AWXGSYPUMWKTBR-UHFFFAOYSA-N 0.000 claims 1
- 101000837344 Homo sapiens T-cell leukemia translocation-altered gene protein Proteins 0.000 claims 1
- 102100028692 T-cell leukemia translocation-altered gene protein Human genes 0.000 claims 1
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims 1
- 238000000034 method Methods 0.000 description 16
- 125000001424 substituent group Chemical group 0.000 description 14
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 229940125904 compound 1 Drugs 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000004528 spin coating Methods 0.000 description 7
- 238000001771 vacuum deposition Methods 0.000 description 7
- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 description 6
- 150000002390 heteroarenes Chemical class 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
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- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 125000006413 ring segment Chemical group 0.000 description 4
- 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 4
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 3
- 125000003342 alkenyl group Chemical group 0.000 description 3
- 125000000304 alkynyl group Chemical group 0.000 description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 3
- 125000004104 aryloxy group Chemical group 0.000 description 3
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthene Chemical compound C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 3
- 125000000623 heterocyclic group Chemical group 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 125000002883 imidazolyl group Chemical group 0.000 description 3
- CECAIMUJVYQLKA-UHFFFAOYSA-N iridium 1-phenylisoquinoline Chemical compound [Ir].C1=CC=CC=C1C1=NC=CC2=CC=CC=C12.C1=CC=CC=C1C1=NC=CC2=CC=CC=C12.C1=CC=CC=C1C1=NC=CC2=CC=CC=C12 CECAIMUJVYQLKA-UHFFFAOYSA-N 0.000 description 3
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical group C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 3
- 125000001624 naphthyl group Chemical group 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 3
- 125000004076 pyridyl group Chemical group 0.000 description 3
- 125000000714 pyrimidinyl group Chemical group 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 description 2
- VFUDMQLBKNMONU-UHFFFAOYSA-N 9-[4-(4-carbazol-9-ylphenyl)phenyl]carbazole Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 VFUDMQLBKNMONU-UHFFFAOYSA-N 0.000 description 2
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical group [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical group C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 125000004054 acenaphthylenyl group Chemical group C1(=CC2=CC=CC3=CC=CC1=C23)* 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 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
- 125000004653 anthracenylene group Chemical group 0.000 description 2
- CUFNKYGDVFVPHO-UHFFFAOYSA-N azulene Chemical compound C1=CC=CC2=CC=CC2=C1 CUFNKYGDVFVPHO-UHFFFAOYSA-N 0.000 description 2
- 125000006267 biphenyl group Chemical group 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
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- WDECIBYCCFPHNR-UHFFFAOYSA-N chrysene Chemical compound C1=CC=CC2=CC=C3C4=CC=CC=C4C=CC3=C21 WDECIBYCCFPHNR-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
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- 238000011156 evaluation Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 125000002541 furyl group Chemical group 0.000 description 2
- 125000004446 heteroarylalkyl group Chemical group 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 125000001041 indolyl group Chemical group 0.000 description 2
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 description 2
- 125000002183 isoquinolinyl group Chemical group C1(=NC=CC2=CC=CC=C12)* 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 125000004957 naphthylene group Chemical group 0.000 description 2
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical group C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 2
- 125000002971 oxazolyl group Chemical group 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 2
- 125000003226 pyrazolyl group Chemical group 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 125000000168 pyrrolyl group Chemical group 0.000 description 2
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 2
- 125000005493 quinolyl group Chemical group 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
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- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 2
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- IWZZBBJTIUYDPZ-DVACKJPTSA-N (z)-4-hydroxypent-3-en-2-one;iridium;2-phenylpyridine Chemical compound [Ir].C\C(O)=C\C(C)=O.[C-]1=CC=CC=C1C1=CC=CC=N1.[C-]1=CC=CC=C1C1=CC=CC=N1 IWZZBBJTIUYDPZ-DVACKJPTSA-N 0.000 description 1
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- KETXQNLMOUVTQB-UHFFFAOYSA-N 2,3,7,8,12,13,17,18-octaethylporphyrin;platinum Chemical compound [Pt].C=1C(C(=C2CC)CC)=NC2=CC(C(=C2CC)CC)=NC2=CC(C(=C2CC)CC)=NC2=CC2=NC=1C(CC)=C2CC KETXQNLMOUVTQB-UHFFFAOYSA-N 0.000 description 1
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- 125000001494 2-propynyl group Chemical group [H]C#CC([H])([H])* 0.000 description 1
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- 125000001255 4-fluorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1F 0.000 description 1
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- 125000003739 carbamimidoyl group Chemical group C(N)(=N)* 0.000 description 1
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- 125000001715 oxadiazolyl group Chemical group 0.000 description 1
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- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- JQQSUOJIMKJQHS-UHFFFAOYSA-N pentaphenyl group Chemical group C1=CC=CC2=CC3=CC=C4C=C5C=CC=CC5=CC4=C3C=C12 JQQSUOJIMKJQHS-UHFFFAOYSA-N 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000005981 pentynyl group Chemical group 0.000 description 1
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- 125000001828 phenalenyl group Chemical group C1(C=CC2=CC=CC3=CC=CC1=C23)* 0.000 description 1
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- 125000001388 picenyl group Chemical group C1(=CC=CC2=CC=C3C4=CC=C5C=CC=CC5=C4C=CC3=C21)* 0.000 description 1
- 125000004193 piperazinyl group Chemical group 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000006410 propenylene group Chemical group 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 125000002568 propynyl group Chemical group [*]C#CC([H])([H])[H] 0.000 description 1
- 125000000561 purinyl group Chemical group N1=C(N=C2N=CNC2=C1)* 0.000 description 1
- 125000004309 pyranyl group Chemical group O1C(C=CC=C1)* 0.000 description 1
- 125000003373 pyrazinyl group Chemical group 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical compound C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 1
- 125000002098 pyridazinyl group Chemical group 0.000 description 1
- 125000005495 pyridazyl group Chemical group 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
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- 230000000171 quenching effect Effects 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 150000003536 tetrazoles Chemical class 0.000 description 1
- 125000003831 tetrazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 125000003639 thymyl group Chemical group C1(=CC(C)=CC=C1C(C)C)* 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 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
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- GWDUZCIBPDVBJM-UHFFFAOYSA-L zinc;2-(2-hydroxyphenyl)-3h-1,3-benzothiazole-2-carboxylate Chemical compound [Zn+2].OC1=CC=CC=C1C1(C([O-])=O)SC2=CC=CC=C2N1.OC1=CC=CC=C1C1(C([O-])=O)SC2=CC=CC=C2N1 GWDUZCIBPDVBJM-UHFFFAOYSA-L 0.000 description 1
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Abstract
【解決手段】基板と、第1電極と、第2電極と、第1電極と第2電極との間に備えられ、発光層を備える有機層と、を備え、第1電極と発光層との間に第1ホストと第1ドーパントとを備える第1中間層、第1ドーパントを備える第2中間層、及び第2ホストと第1ドーパントとを備える第3中間層が介在された有機発光素子である。該有機発光素子は、長寿命を有することができる。
【選択図】図1
Description
次のような構造を有する有機発光素子を製作した:ガラス基板/第1電極(ITO)/第1中間層(化合物1及び化合物3、ドーピング濃度は1wt%)(750Å)/第2中間層(化合物3)(30Å)/第3中間層(化合物1及び化合物3、ドーピング濃度は1wt%)(750Å)/発光層(Zn(BTZ)2/Ir(ppy)3、ドーピング濃度は15wt%)(400Å)/電子輸送層(化合物6)(300Å)/電子注入層(Liq)(10Å)/第2電極(MgAg)(160Å)。
実施例1中で第1中間層及び第3中間層の形成時に化合物1のみを利用したという点を除いては、前記実施例1と同じ方法を利用して有機発光素子を完成した。それをサンプルAという。
実施例1中で第1中間層、第2中間層及び第3中間層の代わりに、化合物1及び化合物3を真空蒸着(化合物3のドーピング濃度は1wt%である)して1500Å厚さの層を形成したという点を除いては、前記実施例1と同じ方法を利用して有機発光素子を完成した。それをサンプルBという。
前記サンプル1、A及びBの輝度をPR650(スペクトロスキャン分光器、PHOTO RESEARCH INC.社製)を利用して経時的に評価して、その結果を図3に示した。図3によれば、本発明によるサンプル1がサンプルA及びBに比べて優秀な寿命特性を有するということが分かる。
Claims (17)
- 基板と、第1電極と、第2電極と、前記第1電極と前記第2電極との間に備えられ、発光層を備える有機層と、を備え、
前記第1電極と前記発光層との間に第1ホストと第1ドーパントとを備える第1中間層、前記第1ドーパントを備える第2中間層、及び第2ホストと前記第1ドーパントとを備える第3中間層が介在された有機発光素子。 - 基板、第1電極、第1中間層、第2中間層、第3中間層、発光層及び第2電極の順で積層されたことを特徴とする請求項1に記載の有機発光素子。
- 前記第1ホスト及び前記第2ホストのHOMOレベルは、−5.5±1.0eVであることを特徴とする請求項1または2に記載の有機発光素子。
- 前記第1ドーパントのLUMOレベルは、−5.5±1.0eVであることを特徴とする請求項1〜3のいずれか1項に記載の有機発光素子。
- 前記第1ホストのHOMOレベルと前記第1ドーパントのLUMOレベルとの差の絶対値は、0ないし0.5eVであることを特徴とする請求項1〜4のいずれか1項に記載の有機発光素子。
- 前記第2ホストのHOMOレベルと前記第1ドーパントのLUMOレベルとの差の絶対値は、0ないし0.5eVであることを特徴とする請求項1〜5のいずれか1項に記載の有機発光素子。
- 前記第1ホスト及び前記第2ホストは、互いに独立的に正孔輸送物質または正孔注入物質であることを特徴とする請求項1〜6のいずれか1項に記載の有機発光素子。
- 前記第1ホスト及び前記第2ホストは、互いに独立的にフタロシアニン系化合物、TCTA、m−MTDATA、m−MTDAPB、ポリアニリン/ドデシルベンゼンスルホン酸(Pani/DBSA)、ポリ(3,4−エチレンジオキシチオフェン)/ポリ(4−スチレンスルホネート)(PEDOT/PSS)、ポリアニリン/カンフルスルホン酸(Pani/CSA)、または(ポリアニリン)/ポリ(4−スチレンスルホネート)(PANI/PSS)、下記化学式1で表示される化合物からなる群から選択されたことを特徴とする請求項1〜7のいずれか1項に記載の有機発光素子:
Xは、置換または非置換されたC1ないしC30アルキレン基、置換または非置換されたC2ないしC30アルケニレン基、置換または非置換されたC6ないしC30アリーレン基、または置換または非置換されたC2ないしC30ヘテロアリーレン基を表し、
nは、1ないし5の整数であり、
R1、R2、R3は、それぞれ独立的に水素原子、ハロゲン原子、ヒドロキシ基、シアノ基、アミノ基、置換または非置換されたC1ないしC30アルキル基、置換または非置換されたC1ないしC30アルコキシ基、置換または非置換されたC6ないしC30アリール基、または置換または非置換されたC4ないしC30ヘテロアリール基を表し、R1、R2、R3のうち二つ以上は互いに結合して飽和または不飽和環を形成でき、
Arは、置換または非置換されたC6ないしC30アリール基または置換または非置換されたC2ないしC30ヘテロアリール基である。 - 前記第1ホスト及び前記第2ホストは、互いに同じであることを特徴とする請求項1〜8のいずれか1項に記載の有機発光素子。
- 前記第1ホスト及び前記第2ホストは、下記化合物1または2であることを特徴とする請求項1〜9のいずれか1項に記載の有機発光素子:
- 前記第1ドーパントは、シアノ基及びフッ素原子のうち一つ以上が置換されたC6ないしC30芳香族化合物、またはシアノ基及びフッ素原子のうち一つ以上が置換されたC6ないしC30ヘテロ芳香族化合物であることを特徴とする請求項1〜10のいずれか1項に記載の有機発光素子。
- 前記第1ドーパントは、下記化合物3または4であることを特徴とする請求項1〜11のいずれか1項に記載の有機発光素子:
- 前記第1中間層中の第1ドーパントの含量は、前記第1ホストの含量及び前記第1ドーパントの含量の和100重量部当たり0.1重量部ないし10重量部であることを特徴とする請求項1〜12のいずれか1項に記載の有機発光素子。
- 前記第3中間層中の第1ドーパントの含量は、前記第2ホストの含量及び前記第1ドーパントの含量の和100重量部当たり0.1重量部ないし10重量部であることを特徴とする請求項1〜13のいずれか1項に記載の有機発光素子。
- 前記第1中間層及び第3中間層の厚さは、互いに独立的に10Åないし1000Åであることを特徴とする請求項1〜14のいずれか1項に記載の有機発光素子。
- 前記第2中間層の厚さは、10Åないし100Åであることを特徴とする請求項1〜15のいずれか1項に記載の有機発光素子。
- 前記有機層は、正孔抑制層、電子輸送層及び電子注入層のうち一つ以上をさらに備えることを特徴とする請求項1〜16のいずれか1項に記載の有機発光素子。
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