JP4844585B2 - 有機エレクトロルミネッセンス素子及び表示装置 - Google Patents
有機エレクトロルミネッセンス素子及び表示装置 Download PDFInfo
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- JP4844585B2 JP4844585B2 JP2008104584A JP2008104584A JP4844585B2 JP 4844585 B2 JP4844585 B2 JP 4844585B2 JP 2008104584 A JP2008104584 A JP 2008104584A JP 2008104584 A JP2008104584 A JP 2008104584A JP 4844585 B2 JP4844585 B2 JP 4844585B2
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- 238000005401 electroluminescence Methods 0.000 title claims description 36
- 239000010410 layer Substances 0.000 claims description 148
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- 239000000872 buffer Substances 0.000 claims description 31
- 125000001424 substituent group Chemical group 0.000 claims description 23
- 239000012044 organic layer Substances 0.000 claims description 15
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 12
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical group N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 claims description 11
- 125000001624 naphthyl group Chemical group 0.000 claims description 5
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical group C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 claims description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- ZDZHCHYQNPQSGG-UHFFFAOYSA-N 1-naphthalen-1-ylnaphthalene Chemical compound C1=CC=C2C(C=3C4=CC=CC=C4C=CC=3)=CC=CC2=C1 ZDZHCHYQNPQSGG-UHFFFAOYSA-N 0.000 claims description 3
- 125000005577 anthracene group Chemical group 0.000 claims description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 3
- 125000005578 chrysene group Chemical group 0.000 claims description 3
- 239000000463 material Substances 0.000 description 67
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- 125000000217 alkyl group Chemical group 0.000 description 5
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- NSMJMUQZRGZMQC-UHFFFAOYSA-N 2-naphthalen-1-yl-1H-imidazo[4,5-f][1,10]phenanthroline Chemical compound C12=CC=CN=C2C2=NC=CC=C2C2=C1NC(C=1C3=CC=CC=C3C=CC=1)=N2 NSMJMUQZRGZMQC-UHFFFAOYSA-N 0.000 description 4
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 4
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- 125000005843 halogen group Chemical group 0.000 description 4
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- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
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- UHXOHPVVEHBKKT-UHFFFAOYSA-N 1-(2,2-diphenylethenyl)-4-[4-(2,2-diphenylethenyl)phenyl]benzene Chemical compound C=1C=C(C=2C=CC(C=C(C=3C=CC=CC=3)C=3C=CC=CC=3)=CC=2)C=CC=1C=C(C=1C=CC=CC=1)C1=CC=CC=C1 UHXOHPVVEHBKKT-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 description 3
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- 125000002883 imidazolyl group Chemical group 0.000 description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 3
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
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- 239000002356 single layer Substances 0.000 description 3
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- DNTVTBIKSZRANH-UHFFFAOYSA-N 4-(4-aminophenyl)-3-(3-methylphenyl)aniline Chemical compound CC1=CC=CC(C=2C(=CC=C(N)C=2)C=2C=CC(N)=CC=2)=C1 DNTVTBIKSZRANH-UHFFFAOYSA-N 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- 0 Cc1c(*)c(*)c(C2=NC(*)=C(*)C(*)=C(*)C2)nc1* Chemical compound Cc1c(*)c(*)c(C2=NC(*)=C(*)C(*)=C(*)C2)nc1* 0.000 description 2
- 229920008347 Cellulose acetate propionate Polymers 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-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
- 125000001931 aliphatic group Chemical group 0.000 description 2
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- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 125000005110 aryl thio group Chemical group 0.000 description 2
- 125000004104 aryloxy 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
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- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 description 2
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- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 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
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- 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
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- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
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- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 2
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- 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
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- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 125000004076 pyridyl group Chemical group 0.000 description 2
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 2
- 229940042055 systemic antimycotics triazole derivative Drugs 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
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- OZKOMUDCMCEDTM-UHFFFAOYSA-N 1,7-phenanthroline Chemical group C1=CC=C2C3=NC=CC=C3C=CC2=N1 OZKOMUDCMCEDTM-UHFFFAOYSA-N 0.000 description 1
- FLBAYUMRQUHISI-UHFFFAOYSA-N 1,8-naphthyridine Chemical group N1=CC=CC2=CC=CN=C21 FLBAYUMRQUHISI-UHFFFAOYSA-N 0.000 description 1
- VERMWGQSKPXSPZ-BUHFOSPRSA-N 1-[(e)-2-phenylethenyl]anthracene Chemical class C=1C=CC2=CC3=CC=CC=C3C=C2C=1\C=C\C1=CC=CC=C1 VERMWGQSKPXSPZ-BUHFOSPRSA-N 0.000 description 1
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- FQJQNLKWTRGIEB-UHFFFAOYSA-N 2-(4-tert-butylphenyl)-5-[3-[5-(4-tert-butylphenyl)-1,3,4-oxadiazol-2-yl]phenyl]-1,3,4-oxadiazole Chemical compound C1=CC(C(C)(C)C)=CC=C1C1=NN=C(C=2C=C(C=CC=2)C=2OC(=NN=2)C=2C=CC(=CC=2)C(C)(C)C)O1 FQJQNLKWTRGIEB-UHFFFAOYSA-N 0.000 description 1
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- MEIBOBDKQKIBJH-UHFFFAOYSA-N 4-methyl-n-[4-[1-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]-4-phenylcyclohexyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C1(CCC(CC1)C=1C=CC=CC=1)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 MEIBOBDKQKIBJH-UHFFFAOYSA-N 0.000 description 1
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- DUSWRTUHJVJVRY-UHFFFAOYSA-N 4-methyl-n-[4-[2-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]propan-2-yl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C(C)(C)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 DUSWRTUHJVJVRY-UHFFFAOYSA-N 0.000 description 1
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- RAPHUPWIHDYTKU-WXUKJITCSA-N 9-ethyl-3-[(e)-2-[4-[4-[(e)-2-(9-ethylcarbazol-3-yl)ethenyl]phenyl]phenyl]ethenyl]carbazole Chemical compound C1=CC=C2C3=CC(/C=C/C4=CC=C(C=C4)C4=CC=C(C=C4)/C=C/C=4C=C5C6=CC=CC=C6N(C5=CC=4)CC)=CC=C3N(CC)C2=C1 RAPHUPWIHDYTKU-WXUKJITCSA-N 0.000 description 1
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- VIJYEGDOKCKUOL-UHFFFAOYSA-N 9-phenylcarbazole Chemical compound C1=CC=CC=C1N1C2=CC=CC=C2C2=CC=CC=C21 VIJYEGDOKCKUOL-UHFFFAOYSA-N 0.000 description 1
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- 125000006617 triphenylamine group Chemical group 0.000 description 1
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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Images
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
- Pyridine Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Description
(2)前記有機層が電子輸送層であることを特徴とする(1)に記載の有機エレクトロルミネッセンス素子。
前記一般式(1)で示される化合物が、下記一般式(2)で示される化合物。
前記一般式(1)で示される化合物が、下記一般式(3)で示される化合物。
下記一般式(4)で示される化合物。
前記一般式(4)で示される化合物が、下記一般式(5)で表される化合物。
前記一般式(1)において、L1で表される連結基は、脂肪族系でも芳香族系でもよく、脂肪族系の場合は鎖状でも環状でもよい。前記一般式(4)におけるL2もL1と同様である。
Tetrahedron Lett.,EN,39,37,1998,6687〜6690
Tetrahedron,EN,50,36,1994,10685〜10692
J.Chem.Soc.Dalton Trans.,EN,20,1998,3479〜3488
J.Chem.Soc.Dalton Trans.,EN,13,1993, 1947〜1958
J.Heterocycl.Chem.,1,1964,112
等がある。
(i)陽極/発光層/陰極
(ii)陽極/正孔輸送層/発光層/陰極
(iii)陽極/発光層/電子輸送層/陰極
(iv)陽極/正孔輸送層/発光層/電子輸送層/陰極
(v)陽極/陽極バッファー層/正孔輸送層/発光層/電子輸送層/陰極バッファー層/陰極などの構造がある。
陽極としてガラス上にITOを150nm成膜した基板(NHテクノグラス社製:NA−45)にパターニングを行った後、このITO透明電極を設けた透明支持基板をi−プロピルアルコールで超音波洗浄し、乾燥窒素ガスで乾燥し、UVオゾン洗浄を5分間行った。この透明支持基板を、市販の真空蒸着装置の基板ホルダーに固定し、一方、モリブデン製抵抗加熱ボートに、α−NPDを200mg入れ、別のモリブデン製抵抗加熱ボートにDPVBiを200mg入れ、また別のモリブデン製抵抗加熱ボートにAlq3を200mg入れ、また別のモリブデン製抵抗加熱ボートに比較化合物(1)を200mg入れ真空蒸着装置に取付けた。
実施例1で作製した有機EL素子OLED1−3の陰極をAlに置き換え、電子輸送層と陰極の間にフッ化リチウムを膜厚0.5nm蒸着して陰極バッファー層を設けた以外は同様にして有機EL素子OLED2−1を作製した。
実施例1で使用したITO透明電極付き透明支持基板を、実施例1と同条件で洗浄後、実施例1と同じ要領で図6の模式図に示す材料を用い、同図に示す膜厚で製膜し、比較用有機EL素子OLED3−1を作製した。
参考化合物I−8とDCMを100:1の質量比で蒸着した膜厚20nmの発光層を使用する以外は、実施例1のOLED1−3と同様の方法で有機EL素子OLED4−1を作製した。これらの素子を温度23度、乾燥窒素ガス雰囲気下で10V直流電圧印可すると、赤色の発光が得られた。上記有機エレクトロルミネッセンス素子OLED4−1の、DCMをQd−2またはBCzVBiに替えることによって、それぞれ、緑色または青色の発光が得られた。
実施例1のOLED1−1〜12において、それぞれの有機EL素子の発光層に用いたDPVBiをそれぞれAlq3またはAlq3とDCMを100:1の質量比で蒸着した発光層に置き替えた以外は同様にして、有機EL素子を作製し、点灯開始時の発光輝度(cd/m2)および輝度の半減する時間を測定した。その結果、実施例1と同様に、本発明の化合物または参考化合物を電子輸送層に用いた有機EL素子において、点灯開始時の発光輝度(cd/m2)および輝度の半減する時間の改善が確認された。
実施例4および5で作製したそれぞれ赤色、緑色、青色発光有機エレクトロルミネッセンス素子を同一基板上に並置し、図2及び図3に示すアクティブマトリクス方式フルカラー表示装置を作製した。該フルカラー表示装置を駆動することにより、輝度の高い鮮明なフルカラー動画表示が得られた。
3 画素
5 走査線
6 データ線
7 電源ライン
10 有機エレクトロルミネッセンス素子
10a 陰極
10b 有機層
10c 透明電極
10d 透明基板
11 スイッチングトランジスタ
12 駆動トランジスタ
13 コンデンサ
A 表示部(ディスプレイ)
B 制御部
Claims (5)
- 構成する有機層の少なくとも1層に、下記一般式(6)で示される化合物の少なくとも1種を含有することを特徴とする有機エレクトロルミネッセンス素子。
〔式中、Ar2は、ベンゼン環、ナフタレン環、アントラセン環、フェナントレン環またはクリセン環から選ばれる芳香族炭化水素、または、ビナフタレン、からq個の水素原子を除いたq価の基を表し、qは2以上8以下の整数を表し、R11〜R18はそれぞれ独立に水素原子または置換基またはAr2を表す。ただし、R11〜R18のうち少なくとも1つはAr2を表す。またq個の、R11〜R18と2,2′−ビピリジル核で形成される2,2′−ビピリジル残基、は同一であっても異なっていても良く、さらにR11〜R18の隣接する置換基同士は互いに縮合して環を形成しても良い。〕 - 前記有機層が電子輸送層であることを特徴とする請求項1に記載の有機エレクトロルミネッセンス素子。
- 前記有機層が発光層であることを特徴とする請求項1に記載の有機エレクトロルミネッセンス素子。
- 陰極と電子輸送層の間に、陰極バッファー層を有することを特徴とする請求項1〜3の何れか1項に記載の有機エレクトロルミネッセンス素子。
- 請求項1〜4の何れか1項に記載の有機エレクトロルミネッセンス素子を有することを特徴とする表示装置。
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| JP5722238B2 (ja) | 2010-01-15 | 2015-05-20 | 出光興産株式会社 | 含窒素複素環誘導体及びそれを含んでなる有機エレクトロルミネッセンス素子 |
| JP5978843B2 (ja) | 2012-02-02 | 2016-08-24 | コニカミノルタ株式会社 | イリジウム錯体化合物、有機エレクトロルミネッセンス素子材料、有機エレクトロルミネッセンス素子、照明装置及び表示装置 |
| WO2013141097A1 (ja) * | 2012-03-22 | 2013-09-26 | コニカミノルタ株式会社 | 透明電極、電子デバイス及び有機エレクトロルミネッセンス素子 |
| EP2890221A4 (en) | 2012-08-24 | 2016-09-14 | Konica Minolta Inc | TRANSPARENT ELECTRODE, ELECTRONIC DEVICE AND METHOD FOR PRODUCING THE TRANSPARENT ELECTRODE |
| JP6230868B2 (ja) * | 2012-10-22 | 2017-11-15 | コニカミノルタ株式会社 | 透明電極、電子デバイスおよび有機エレクトロルミネッセンス素子 |
| KR20150122754A (ko) | 2013-03-29 | 2015-11-02 | 코니카 미놀타 가부시키가이샤 | 유기 일렉트로루미네센스 소자, 조명 장치, 표시 장치, 유기 루미네센스 소자용 발광성 박막과 조성물 및 발광 방법 |
| US20160043334A1 (en) | 2013-03-29 | 2016-02-11 | Konica Minolta, Inc. | Material for organic electroluminescent elements, organic electroluminescent element, display device and lighting device |
| WO2014157618A1 (ja) | 2013-03-29 | 2014-10-02 | コニカミノルタ株式会社 | 有機エレクトロルミネッセンス素子、それを具備した照明装置及び表示装置 |
| JP5831654B1 (ja) | 2015-02-13 | 2015-12-09 | コニカミノルタ株式会社 | 芳香族複素環誘導体、それを用いた有機エレクトロルミネッセンス素子、照明装置及び表示装置 |
| JP6788314B2 (ja) | 2016-01-06 | 2020-11-25 | コニカミノルタ株式会社 | 有機エレクトロルミネッセンス素子、有機エレクトロルミネッセンス素子の製造方法、表示装置及び照明装置 |
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