JP2011032487A - 新規ヘテロ環化合物、発光素子材料及び発光素子 - Google Patents
新規ヘテロ環化合物、発光素子材料及び発光素子 Download PDFInfo
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- JP2011032487A JP2011032487A JP2010238029A JP2010238029A JP2011032487A JP 2011032487 A JP2011032487 A JP 2011032487A JP 2010238029 A JP2010238029 A JP 2010238029A JP 2010238029 A JP2010238029 A JP 2010238029A JP 2011032487 A JP2011032487 A JP 2011032487A
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- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical class C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
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- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 125000000213 sulfino group Chemical group [H]OS(*)=O 0.000 description 1
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- QKTRRACPJVYJNU-UHFFFAOYSA-N thiadiazolo[5,4-b]pyridine Chemical class C1=CN=C2SN=NC2=C1 QKTRRACPJVYJNU-UHFFFAOYSA-N 0.000 description 1
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- NZFNXWQNBYZDAQ-UHFFFAOYSA-N thioridazine hydrochloride Chemical class Cl.C12=CC(SC)=CC=C2SC2=CC=CC=C2N1CCC1CCCCN1C NZFNXWQNBYZDAQ-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
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- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 description 1
- JFLKFZNIIQFQBS-FNCQTZNRSA-N trans,trans-1,4-Diphenyl-1,3-butadiene Chemical group C=1C=CC=CC=1\C=C\C=C\C1=CC=CC=C1 JFLKFZNIIQFQBS-FNCQTZNRSA-N 0.000 description 1
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- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- AKQNYQDSIDKVJZ-UHFFFAOYSA-N triphenylsilane Chemical compound C1=CC=CC=C1[SiH](C=1C=CC=CC=1)C1=CC=CC=C1 AKQNYQDSIDKVJZ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/40—Organosilicon compounds, e.g. TIPS pentacene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/141—Organic polymers or oligomers comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/10—Transparent electrodes, e.g. using graphene
- H10K2102/101—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO]
- H10K2102/103—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO] comprising indium oxides, e.g. ITO
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
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Abstract
Description
〔1〕
下記一般式(I)で表される化合物であることを特徴とする発光素子材料。
〔2〕
下記一般式(II)で表される化合物であることを特徴とする発光素子材料。
〔3〕
下記一般式(III)で表される化合物であることを特徴とする発光素子材料。
〔4〕
下記一般式(IV)で表される化合物であることを特徴とする発光素子材料。
〔5〕
下記一般式(V)で表される化合物であることを特徴とする発光素子材料。
〔6〕
下記一般式(VI)で表される化合物であることを特徴とする発光素子材料。
〔7〕
下記一般式(VII)で表される化合物であることを特徴とする発光素子材料。
〔8〕
下記一般式(VIII)で表される化合物であることを特徴とする発光素子材料。
〔9〕
下記一般式(IX) で表されることを特徴とする化合物。
〔10〕
下記一般式(X)で表されることを特徴とする化合物。
〔11〕
下記一般式(XI)で表される化合物であることを特徴とする発光素子材料。
〔12〕
一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、少なくとも一層が〔1〕〜〔11〕記載の一般式(I)〜(XI)で表される化合物の少なくとも一種を含有する層であることを特徴とする発光素子。
〔13〕
一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、少なくとも一層が〔1〕〜〔11〕記載の一般式(I)〜(XI)で表される化合物の少なくとも一種をポリマーに分散した層であることを特徴とする発光素子。
〔14〕
一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、発光層と陰極との間の少なくとも一層が〔1〕〜〔11〕記載の一般式(I)〜(XI)で表される化合物を少なくとも一種含有する層であることを特徴とする発光素子。
〔15〕
一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、青色発光層と陰極との間の少なくとも一層が〔1〕〜〔11〕記載の一般式(I)〜(XI)で表される化合物を少なくとも一種含有する層であることを特徴とする発光素子。
〔16〕
一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、〔1〕〜〔11〕記載の一般式(I)〜(XI)で表される化合物を少なくとも一種含有する層に青色発光材料を含有することを特徴とする発光素子。
合成例1.例示化合物2の合成
融点:300℃以上
実施例1.
洗浄したITO電極付きガラス基板上に、銅フタロシアニンを膜厚15nm、N,N' −ビス(1−ナフチル)−N,N' −ジフェニルベンジジン(NPD)を膜厚40nm、表1記載化合物を膜厚60nmで、この順に真空蒸着(1.0 ×10-3〜1.3 ×10-3Pa)した。この上にパターニングしたマスク(発光面積が4mm×5mmとなるマスク)を設置し、マグネシウム:銀=10:1を250nm共蒸着した後、銀300nmを蒸着し(1.0 ×10-3〜1.3 ×10-3Pa)、発光素子を作製した。なお、作製した素子は乾燥グローブボックス内で封止した。東陽テクニカ製ソースメジャーユニット2400型を用いて、ITOを陽極、Mg:Agを陰極として直流定電圧を発光素子に印加し発光させ、その輝度をトプコン社の輝度計BM−8、発光波長、色度座標(CIE色度座標)を浜松フォトニクス社製スペクトルアナライザーPMA−11を用いて測定した。また、作製した素子を85℃、70%RHの条件下に3日間放置後発光させた相対輝度(素子作製直後の輝度を100とした場合の経時後の輝度を相対値で表した値(駆動電圧10V))及び発光面のダークスポット(未発光部)の有無を目視評価した。結果を表1に示す。
実施例1と同様にITO基板を洗浄後、銅フタロシアニンを膜厚5nm、NPDを膜厚40nm、青色発光材料Aを膜厚20nm、表2記載の化合物を膜厚40nmとなるようにこの順に真空蒸着(1.0 ×10-3〜1.3 ×10-3Pa)した。この上にパターニングしたマスク(発光面積が4mm×5mmとなるマスク)を設置し、マグネシウム:銀=10:1を250nm共蒸着した後、銀300nmを蒸着し(1.0 ×10-3〜1.3 ×10-3Pa)、発光素子を作製した。なお、作製した素子は乾燥グローブボックス内で封止した。作製した素子について実施例1と同様な評価を行った。結果を表2に示す。
ポリ(N−ビニルカルバゾール)40mg、青色発光材料B10.0mg、緑色発光材料G2.0mg、赤色発光材料R0.5mg、表4記載の化合物12.0mgを1,2−ジクロロエタン3mlに溶解し、洗浄したITO基板上にスピンコートした。生成した有機薄膜の膜厚は、約110nmであった。有機薄膜上にパターニングしたマスク(発光面積が4mm×5mmとなるマスク)を設置し、次いでAl:Li=100:2比で膜厚200nmとなるように共蒸着して発光素子を作製した。この素子を実施例1と同様な方法で評価した。結果を表4に示す。
実施例1と同様にITO基板を洗浄後、NPDを膜厚50nm、4,4'−ビス(カルバゾール−9−イル)ビフェニル及びトリス(2−フェニルピリジン)イリジウム(III)をそれぞれ蒸着速度0.4nm/秒、0.025nm/秒で膜厚20nmとなるように共蒸着し、次いで例示化合物21を膜厚25nm蒸着し、更にLiFを膜厚1nm蒸着(1.0×10-3〜1.3×10-3Pa)した。この上にパターニングしたマスク(発光面積が4mm×5mmとなるマスク)を設置し、アルミニウムを200nm蒸着(1.0×10-3〜1.3×10-3Pa)して素子を作製した。作製した素子について評価した結果、緑色で最高輝度98,000cd/m2、外部量子効率14%の高輝度、高効率発光が得られた。
実施例1と同様にITO基板を洗浄した後、Baytron P(PEDOT−PSS溶液(ポリジオキシエチレン−ポリスチレンスルホン酸ドープ体)/バイエル社製)を2000rpm、60秒でスピンコートした後、100℃で1時間真空乾燥し、ホール輸送性膜を作製した(膜厚約100nm)。この上にポリ(9,9−ジオクチルフルオレン)20mgをクロロホルム2ミリリットルに溶かした溶液をスピンコート(1000rpm、20秒)した(膜厚約70nm)。この上に例示化合物18を膜厚30nm真空蒸着(1.0×10-3〜1.3×10-3Pa)した。次いでこの有機薄膜上にパターニングしたマスク(発光面積が4mm×5mmとなるマスク)を設置し、実施例1と同様にして陰極を蒸着し、素子を作製した(本発明素子)。また、比較素子として上記素子作製工程において例示化合物18を除いた素子を作製した。両素子についてEL特性を評価した結果、比較素子では最高輝度93cd/m2、外部量子効率0.1%以下であったのに対し、本発明素子では最高輝度1680cd/m2、外部量子効率1.3%となり、π共役系ポリマーを発光材料として用いた場合にも本発明化合物が電子輸送材料として有効に機能することが明らかとなった。
実施例1と同様にITO基板を洗浄した後、Baytron P(PEDOT−PSS溶液(ポリジオキシエチレン−ポリスチレンスルホン酸ドープ体)/バイエル社製)を2000rpm、60秒でスピンコートした後、100℃で2時間真空乾燥し、ホール輸送性膜を作製した(膜厚約100nm)。この上にポリ(N−ビニルカルバゾール)40mg、PBD12mg及びトリス(2−フェニルピリジン)イリジウム(III)1mgをクロロホルム3ミリリットルに溶解した溶液をスピンコート(1500rpm、20秒)した(膜厚約80nm)。この上に例示化合物21を膜厚20nm真空蒸着(1.0×10-3〜1.3×10-3Pa)し、更にLiFを膜厚約1nm蒸着(1.0×10-3〜1.3×10-3Pa)した。この上にパターニングしたマスク(発光面積が4mm×5mmとなるマスク)を設置し、アルミニウムを200nm蒸着(1.0×10-3〜1.3×10-3Pa)して素子を作製した(本発明素子)。また、比較素子として上記素子作製工程において例示化合物21を除いた素子を作製した。作製した素子について評価した結果、比較素子では発光輝度1000cd/m2の時の外部量子効率が5.2%であったのに対し、本発明素子では外部量子効率10.2%となり、三重項励起子からの発光と言われているトリス(2−フェニルピリジン)イリジウム(III)を用いた塗布型素子においても、本発明化合物が電子輸送材料として有効に機能することが明らかとなった。
Claims (16)
- 一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、少なくとも一層が請求項1〜11記載の一般式(I)〜(XI)で表される化合物の少なくとも一種を含有する層であることを特徴とする発光素子。
- 一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、少なくとも一層が請求項1〜11記載の一般式(I)〜(XI)で表される化合物の少なくとも一種をポリマーに分散した層であることを特徴とする発光素子。
- 一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、発光層と陰極との間の少なくとも一層が請求項1〜11記載の一般式(I)〜(XI)で表される化合物を少なくとも一種含有する層であることを特徴とする発光素子。
- 一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、青色発光層と陰極との間の少なくとも一層が請求項1〜11記載の一般式(I)〜(XI)で表される化合物を少なくとも一種含有する層であることを特徴とする発光素子。
- 一対の電極間に発光層若しくは発光層を含む複数の有機化合物薄層を形成した発光素子において、請求項1〜11記載の一般式(I)〜(XI)で表される化合物を少なくとも一種含有する層に青色発光材料を含有することを特徴とする発光素子。
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JP2015060717A (ja) * | 2013-09-19 | 2015-03-30 | 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 |
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US6830836B2 (en) | 2004-12-14 |
US6461747B1 (en) | 2002-10-08 |
US6656612B2 (en) | 2003-12-02 |
US20030091861A1 (en) | 2003-05-15 |
US20040062952A1 (en) | 2004-04-01 |
JP5351124B2 (ja) | 2013-11-27 |
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