JPWO2009107549A1 - 発光素子材料および発光素子 - Google Patents
発光素子材料および発光素子 Download PDFInfo
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- JPWO2009107549A1 JPWO2009107549A1 JP2009513149A JP2009513149A JPWO2009107549A1 JP WO2009107549 A1 JPWO2009107549 A1 JP WO2009107549A1 JP 2009513149 A JP2009513149 A JP 2009513149A JP 2009513149 A JP2009513149 A JP 2009513149A JP WO2009107549 A1 JPWO2009107549 A1 JP WO2009107549A1
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- light emitting
- light
- aryl
- emitting device
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- 239000000463 material Substances 0.000 title claims abstract description 155
- 150000001875 compounds Chemical class 0.000 claims abstract description 64
- 238000002347 injection Methods 0.000 claims abstract description 44
- 239000007924 injection Substances 0.000 claims abstract description 44
- 239000002019 doping agent Substances 0.000 claims abstract description 42
- XPJUXTZYXPASRB-UHFFFAOYSA-N benzo[f]pentahelicene Chemical group C1=CC=C2C3=C4C5=CC=CC=C5C=CC4=CC=C3C3=CC=CC=C3C2=C1 XPJUXTZYXPASRB-UHFFFAOYSA-N 0.000 claims abstract description 12
- -1 anthracene compound Chemical class 0.000 claims description 49
- 125000001424 substituent group Chemical group 0.000 claims description 48
- 125000003118 aryl group Chemical group 0.000 claims description 47
- 125000000217 alkyl group Chemical group 0.000 claims description 33
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims description 26
- 125000001072 heteroaryl group Chemical group 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 125000000623 heterocyclic group Chemical group 0.000 claims description 16
- 125000003545 alkoxy group Chemical group 0.000 claims description 15
- 125000005013 aryl ether group Chemical group 0.000 claims description 15
- 125000004414 alkyl thio group Chemical group 0.000 claims description 14
- 150000004832 aryl thioethers Chemical group 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 14
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 10
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Natural products C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims description 9
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 9
- 125000003342 alkenyl group Chemical group 0.000 claims description 8
- 125000000304 alkynyl group Chemical group 0.000 claims description 8
- 125000000392 cycloalkenyl group Chemical group 0.000 claims description 8
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- 229910052736 halogen Inorganic materials 0.000 claims description 7
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- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 7
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- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
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- 239000001301 oxygen Substances 0.000 claims description 3
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- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 238000005401 electroluminescence Methods 0.000 abstract 1
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- 238000000034 method Methods 0.000 description 36
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- 239000000047 product Substances 0.000 description 12
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical class ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 11
- 239000013078 crystal Substances 0.000 description 11
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 10
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- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 7
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- 238000000746 purification Methods 0.000 description 7
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
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- 125000005073 adamantyl group Chemical group C12(CC3CC(CC(C1)C3)C2)* 0.000 description 6
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- 230000000052 comparative effect Effects 0.000 description 6
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- 230000000694 effects Effects 0.000 description 6
- 238000010894 electron beam technology Methods 0.000 description 6
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 6
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- 238000007740 vapor deposition Methods 0.000 description 6
- 238000005160 1H NMR spectroscopy Methods 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 5
- 235000019341 magnesium sulphate Nutrition 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 5
- 150000004866 oxadiazoles Chemical class 0.000 description 5
- 238000010898 silica gel chromatography Methods 0.000 description 5
- RHPVVNRNAHRJOQ-UHFFFAOYSA-N 4-methyl-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1NC1=CC=C(C)C=C1 RHPVVNRNAHRJOQ-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
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- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 4
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 4
- 238000000859 sublimation Methods 0.000 description 4
- 230000008022 sublimation Effects 0.000 description 4
- 239000000126 substance Substances 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
- WJKHJLXJJJATHN-UHFFFAOYSA-N triflic anhydride Chemical compound FC(F)(F)S(=O)(=O)OS(=O)(=O)C(F)(F)F WJKHJLXJJJATHN-UHFFFAOYSA-N 0.000 description 4
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 4
- 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 description 3
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical compound N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
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- 239000007983 Tris buffer Substances 0.000 description 3
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- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 3
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
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- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 description 2
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Abstract
Description
アプライド フィジクス レターズ(Applied Physics Letters)、(米国)、1987年、51巻、12号、913−915頁 "有機EL材料とディスプレイ"、シーエムシー出版、2001年、151頁 "有機EL材料とディスプレイ"、シーエムシー出版、2001年、120頁 日本化学会第83回春季年会予稿集I B4−40
また、本発明の別の好ましい態様は、陽極と陰極の間に少なくとも正孔注入層および発光層が存在し、電気エネルギーにより発光する発光素子に用いられる発光素子材料であって、該発光素子材料が下記一般式(3)で表されるジベンゾクリセン骨格を有する正孔注入材料であることを特徴とする発光素子材料である。
シアノ基、−P(=O)R19R20は、置換基を有していても有していなくてもよい。R19およびR20は、アリール基またはヘテロアリール基である。
(1−1)中間体Aの合成
窒素置換した100ml三つ口フラスコに、中間体E1g、p,p’−ジトリルアミン1g、ビス(ジベンジリデンアセトン)パラジウム(0)55.2mg、2−ジシクロヘキシルホスフィノ−2’,4’,6’−トリイソプロピルビフェニル183mg、炭酸セシウム
3.1g、キシレン25mlを投入し、130℃で6時間反応させた。反応終了後、反応液を室温まで冷却し、濾過してロータリーエバポレーターで溶媒を留去した。得られた固体をシリカゲルクロマトグラフィーで精製し、真空乾燥して目的物950mg(黄色結晶 収率82.6%)。なお、この化合物[29]は、油拡散ポンプを用いて1×10−3Paの圧力下、約300℃で昇華精製を行ってから発光素子材料として使用した。
1H−NMR(CDCl3(d=ppm))2.35(s, 12H), 7.05-7.33(m, 18H), 7.45-7.60(m, 4H), 8.20-8.65(m, 8H)。
中間体E1gを用い、p,p’−ジトリルアミンの代わりに(4−tert−ブチルフェニル)フェニルアミンに変更した以外は、合成例1(1−6)化合物[29]の合成と同一の仕込み比、反応条件、精製条件で合成し、目的物970mg(黄色結晶 収率78.2%)を得た。なおこの化合物[37]は、油拡散ポンプを用いて1×10−3Paの圧力下、約280℃で昇華精製を行ってから発光素子材料として使用した。
1H−NMR(CDCl3(d=ppm))1.33(s, 18H), 7.07-7.38(m, 20H),7.42-7.62(m, 4H) 8.23-8.65(m, 8H)。
中間体E1gを用い,p,p’−ジトリルアミンの代わりにビス(4−tert−ブチルフェニル)アミンに変更した以外は、合成例1(1−6)化合物[29]の合成と同一の仕込み比、反応条件、精製条件で合成し、目的物1.15g(黄色結晶 収率81.0%)を得た。なおこの化合物[39]は、油拡散ポンプを用いて1×10−3Paの圧力下、約300℃で昇華精製を行ってから発光素子材料として使用した。
1H−NMR(CDCl3(d=ppm))1.33(s, 36H), 7.10-7.40(m, 18H), 7.45-7.64(m, 4H), 8.23-8.67(m, 8H)。
中間体E1gを用い,p,p’−ジトリルアミンの代わりに(3−tert−ブチルフェニル)フェニルアミンに変更した以外は、合成例1(1−6)化合物[29]の合成と同一の仕込み比、反応条件、精製条件で合成し、目的物980mg(黄色結晶 収率79.0%)を得た。なおこの化合物[40]は、油拡散ポンプを用いて1×10−3Paの圧力下、約300℃で昇華精製を行ってから発光素子材料として使用した。
1H−NMR(CDCl3(d=ppm))1.25(s, 18H), 6.96-7.45(m, 20H), 7.48-7.67(m, 4H), 8.27-8.74(m, 8H)。
化合物[29]を用いた発光素子を次のように作製した。30×40mmのガラス基板(旭硝子(株)製、15Ω/□、電子ビーム蒸着品)上にITO導電膜をガラス基板中央部分に150nmの厚さで30×13mmの大きさに形成し、陽極とした。陽極が形成された基板を “セミコクリン(登録商標)56”(フルウチ化学(株)製)で15分間超音波洗浄してから、超純水で洗浄した。続いて、この基板をイソプロピルアルコールで15分間超音波洗浄してから、熱メタノールに15分間浸漬させた後、乾燥させた。素子を作製する直前にこの基板を1時間UV−オゾン処理し、さらに真空蒸着装置内に設置して、装置内の真空度が5×10−5Pa以下になるまで排気した。前記基板のITO膜上に、抵抗加熱法によって、まず正孔注入材料として、銅フタロシアニンを10nm、正孔輸送材料として、4,4’−ビス(N−(1−ナフチル)−N−フェニルアミノ)ビフェニルを50nm蒸着した。次に、発光層のホスト材料として、下記式に示すH−1を、またドーパント材料として化合物[29]を、ドープ濃度が5重量%になるように35nmの厚さに蒸着した。次に、電子輸送材料として、トリス(8−キノリノラト)アルミニウム(Alq3)を20nmの厚さに積層した。以上のように形成した有機層上に、フッ化リチウムを0.5nmの厚さに蒸着した後、アルミニウムを1000nm蒸着して陰極とし、5×5mm角の素子を作製した。ここで言う膜厚は、水晶発振式膜厚モニターの表示値である。この発光素子を10mA/cm2で直流駆動したところ、発光効率3.2lm/Wの高効率発光と、C.I.E.色度座標で(0.14,0.16)と純青色発光が得られた。この素子を初期輝度1000cd/m2に設定し直流電流で連続駆動したところ、輝度半減時間は2500時間と長寿命であった。
ドーパント材料、発光層のホスト材料、電子輸送材料としてそれぞれ表1に記載の化合物を用いた以外は、実施例1と同様にして発光素子を作製した。これらの発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表1に示す。なお、表1中、H−2、H−3、H−4、H−5、H−6、H−7、H−8、およびH−9は下記式に示される化合物である。
ドーパント材料、ホスト材料および電子輸送材料としてそれぞれ表2に記載の化合物を用いた以外は、実施例1と同様にして発光素子を作製した。これらの発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表2に示す。ただし比較例10に示す素子は色純度が悪く、輝度半減寿命の測定は行わなかった。なお表2中、D−1、D−2、D−3およびD−4は下記式に示す化合物である。
ドーパント材料、ホスト材料および電子輸送材料としてそれぞれ表3に記載の化合物を用いた以外は、実施例1と同様にして発光素子を作製した。これらの発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表3に示す。なお表3中、E−1、E−2、E−3、E−4およびE−5は下記式に示す化合物である。
ドーパント材料、ホスト材料および電子輸送材料としてそれぞれ表3に記載の化合物を用いた以外は、実施例1と同様にして発光素子を作製した。これらの発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表3に示す。
化合物[29]を正孔注入材料として用いた発光素子を次のように作製した。30×40mmのガラス基板(旭硝子(株)製、15Ω/□、電子ビーム蒸着品)上にITO導電膜をガラス基板中央部分に150nmの厚さで30×13mmの大きさに形成し、陽極とした。陽極が形成された基板を “セミコクリン(登録商標)56”(フルウチ化学(株)製)で15分間超音波洗浄してから、超純水で洗浄した。続いて、この基板をイソプロピルアルコールで15分間超音波洗浄してから、熱メタノールに15分間浸漬させた後、乾燥させた。素子を作製する直前にこの基板を1時間UV−オゾン処理し、さらに真空蒸着装置内に設置して、装置内の真空度が5×10−5Pa以下になるまで排気した。前記基板のITO膜上に、抵抗加熱法によって、まず正孔注入材料として、化合物[29]を40nm、正孔輸送材料として、4,4’−ビス(N−(1−ナフチル)−N−フェニルアミノ)ビフェニルを10nm蒸着した。次に、発光層のホスト材料として、H−1を、またドーパント材料としてD−4を、ドープ濃度が5重量%になるように35nmの厚さに蒸着した。次に、電子輸送材料として、トリス(8−キノリノラト)アルミニウム(Alq3)を20nmの厚さに積層した。以上のように形成した有機層上に、フッ化リチウムを0.5nmの厚さに蒸着した後、アルミニウムを1000nm蒸着して陰極とし、5×5mm角の素子を作製した。ここで言う膜厚は、水晶発振式膜厚モニターの表示値である。この発光素子を10mA/cm2で直流駆動したところ、発光効率3.5lm/Wの高効率発光と、C.I.E.色度座標で(0.14,0.14)と純青色発光が得られた。この素子を初期輝度1000cd/m2に設定し直流電流で連続駆動したところ、輝度半減時間は2500時間と長寿命であった。
正孔注入材料、ホスト材料およびドーパント材料として表4に記載の化合物を用いた以外は、実施例55と同様にして発光素子を作製した。この発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表4に示す。
正孔注入材料、ホスト材料およびドーパント材料として表4に記載の化合物を用いた以外は、実施例55と同様にして発光素子を作製した。この発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表4に示す。なお表4中、HI−1およびHI−2は下記式に示す化合物である。
正孔注入材料、ホスト材料およびドーパント材料として表5に記載の化合物を用いた以外は、実施例55と同様にして発光素子を作製した。この発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表5に示す。
正孔注入材料、ホスト材料およびドーパント材料として表6に記載の化合物を用いた以外は、実施例55と同様にして発光素子を作製した。この発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表6に示す。
正孔注入材料、ホスト材料、ドーパント材料および電子輸送材料として表7に記載の化合物を用いた以外は、実施例55と同様にして発光素子を作製した。この発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表7に示す。
正孔注入材料、ホスト材料、ドーパント材料および電子輸送材料として表7に記載の化合物を用いた以外は、実施例55と同様にして発光素子を作製した。この発光素子の10mA/cm2で直流駆動時の発光効率、C.I.E.色度座標、ならびに初期輝度1000cd/m2に設定し、直流電流駆動させたときの輝度半減寿命の結果を表7に示す。
Claims (9)
- 陽極と陰極の間に少なくともホストとドーパントを有する発光層が存在し、電気エネルギーにより発光する発光素子に用いられる発光素子材料であって、該発光素子材料が、下記一般式(1)で表されるジベンゾクリセン骨格を有するドーパント用発光素子材料であることを特徴とする発光素子材料。
- R21〜R25のうち少なくとも一つがアルキル基またはシクロアルキル基である請求項2記載の発光素子材料。
- 陽極と陰極の間に少なくとも発光層が存在し、電気エネルギーにより発光する発光素子であって、該発光層がホストとドーパントを有し、ドーパントとして請求項1〜3のいずれか記載の発光素子材料を含有することを特徴とする発光素子。
- 前記ホストがアントラセン化合物、もしくはピレン化合物から選ばれることを特徴とする請求項4記載の発光素子。
- 下記一般式(3)で表されるジベンゾクリセン骨格を有する発光素子材料。
- 陽極と陰極の間に少なくとも正孔注入層および発光層が存在し、電気エネルギーにより発光する発光素子に用いられる請求項6記載の発光素子材料であって、該発光素子材料が正孔注入材料であることを特徴とする請求項6記載の発光素子材料。
- 陽極と陰極の間に少なくとも正孔注入層および発光層が存在し、電気エネルギーにより発光する発光素子であって、正孔注入層に請求項6記載の発光素子材料を含有することを特徴とする発光素子。
- 発光層と陰極の間に少なくとも電子輸送層が存在し、電子輸送層が、電子受容性窒素を含み、さらに炭素、水素、窒素、酸素、ケイ素、リンの中から選ばれる元素で構成されるヘテロアリール環構造を有する化合物を含有することを特徴とする請求項4、5または8記載の発光素子。
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JP5557663B2 (ja) * | 2009-09-11 | 2014-07-23 | 富士フイルム株式会社 | 光電変換素子及びその製造方法、光センサ、並びに撮像素子及びそれらの駆動方法 |
JP5835217B2 (ja) * | 2010-07-02 | 2015-12-24 | 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 |
KR101990024B1 (ko) * | 2011-04-15 | 2019-06-17 | 에스에프씨 주식회사 | 디벤조크리센 유도체 화합물 및 이를 포함하는 유기전계발광소자 |
JP2014167946A (ja) * | 2011-06-23 | 2014-09-11 | Toray Ind Inc | 発光素子 |
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KR102316681B1 (ko) * | 2015-01-09 | 2021-10-26 | 삼성디스플레이 주식회사 | 화합물 및 이를 포함하는 유기 발광 소자 |
US10147884B2 (en) | 2015-05-06 | 2018-12-04 | Samsung Display Co., Ltd. | Organic light-emitting device |
US11730053B2 (en) | 2015-05-06 | 2023-08-15 | Samsung Display Co., Ltd. | Organic light-emitting device |
JP7135428B2 (ja) * | 2017-05-17 | 2022-09-13 | 東ソー株式会社 | 縮合環化合物 |
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JP2001326079A (ja) * | 2000-05-17 | 2001-11-22 | Toyota Central Res & Dev Lab Inc | 有機電界発光素子 |
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