JP5656338B2 - 新規な1,10−フェナントロリン誘導体、電子輸送材料、電子注入材料およびそれを含有する有機電界発光素子 - Google Patents
新規な1,10−フェナントロリン誘導体、電子輸送材料、電子注入材料およびそれを含有する有機電界発光素子 Download PDFInfo
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- JP5656338B2 JP5656338B2 JP2007062181A JP2007062181A JP5656338B2 JP 5656338 B2 JP5656338 B2 JP 5656338B2 JP 2007062181 A JP2007062181 A JP 2007062181A JP 2007062181 A JP2007062181 A JP 2007062181A JP 5656338 B2 JP5656338 B2 JP 5656338B2
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- 150000005045 1,10-phenanthrolines Chemical class 0.000 title claims description 25
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- OAGAQNLQSVKWHF-UHFFFAOYSA-N [Ir].N1=C(C=CC=C1)C1=CC2=C(S1)C=CC=C2.N2=C(C=CC=C2)C2=CC1=C(S2)C=CC=C1.N1=C(C=CC=C1)C1=CC2=C(S1)C=CC=C2 Chemical compound [Ir].N1=C(C=CC=C1)C1=CC2=C(S1)C=CC=C2.N2=C(C=CC=C2)C2=CC1=C(S2)C=CC=C1.N1=C(C=CC=C1)C1=CC2=C(S1)C=CC=C2 OAGAQNLQSVKWHF-UHFFFAOYSA-N 0.000 description 1
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 1
- JHYLKGDXMUDNEO-UHFFFAOYSA-N [Mg].[In] Chemical compound [Mg].[In] JHYLKGDXMUDNEO-UHFFFAOYSA-N 0.000 description 1
- 125000005595 acetylacetonate group Chemical group 0.000 description 1
- 150000001251 acridines Chemical class 0.000 description 1
- 239000005456 alcohol based solvent Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 125000002078 anthracen-1-yl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C([*])=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 1
- 125000000748 anthracen-2-yl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C([H])=C([*])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 1
- 229940058303 antinematodal benzimidazole derivative Drugs 0.000 description 1
- 229940027998 antiseptic and disinfectant acridine derivative Drugs 0.000 description 1
- 239000000010 aprotic solvent Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000001502 aryl halides Chemical class 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 125000003785 benzimidazolyl group Chemical class N1=C(NC2=C1C=CC=C2)* 0.000 description 1
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- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical class C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- FUGAFXWFRBAVLY-UHFFFAOYSA-N c(cc1)ccc1-c(cc1cc2)cnc1c(nc1)c2cc1-c1cc(-c2cc(ccc3cc(-c4ccccc4)cnc33)c3nc2)cc(-c2cc(ccc3cc(-c4ccccc4)cnc33)c3nc2)c1 Chemical compound c(cc1)ccc1-c(cc1cc2)cnc1c(nc1)c2cc1-c1cc(-c2cc(ccc3cc(-c4ccccc4)cnc33)c3nc2)cc(-c2cc(ccc3cc(-c4ccccc4)cnc33)c3nc2)c1 FUGAFXWFRBAVLY-UHFFFAOYSA-N 0.000 description 1
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- QBBJENDZXKGDRP-UHFFFAOYSA-N c(cc1)ccc1-c1ccc(ccc2c3ncc(-c4cc(-c(cc5cc6)cnc5c5c6ccc(-c6ccccc6)n5)cc(-c5cc(ccc6ccc(-c7ccccc7)nc66)c6nc5)c4)c2)c3n1 Chemical compound c(cc1)ccc1-c1ccc(ccc2c3ncc(-c4cc(-c(cc5cc6)cnc5c5c6ccc(-c6ccccc6)n5)cc(-c5cc(ccc6ccc(-c7ccccc7)nc66)c6nc5)c4)c2)c3n1 QBBJENDZXKGDRP-UHFFFAOYSA-N 0.000 description 1
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- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
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- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
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- 239000010949 copper Substances 0.000 description 1
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- VBVAVBCYMYWNOU-UHFFFAOYSA-N coumarin 6 Chemical compound C1=CC=C2SC(C3=CC4=CC=C(C=C4OC3=O)N(CC)CC)=NC2=C1 VBVAVBCYMYWNOU-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
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- 239000000975 dye Substances 0.000 description 1
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- 239000004210 ether based solvent Substances 0.000 description 1
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- 239000007850 fluorescent dye Substances 0.000 description 1
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- 239000011737 fluorine Substances 0.000 description 1
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- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
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- 150000002430 hydrocarbons Chemical class 0.000 description 1
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- 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 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- UEEXRMUCXBPYOV-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical compound [Ir].C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1 UEEXRMUCXBPYOV-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000005453 ketone based solvent Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- UKVIEHSSVKSQBA-UHFFFAOYSA-N methane;palladium Chemical compound C.[Pd] UKVIEHSSVKSQBA-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- VOFUROIFQGPCGE-UHFFFAOYSA-N nile red Chemical compound C1=CC=C2C3=NC4=CC=C(N(CC)CC)C=C4OC3=CC(=O)C2=C1 VOFUROIFQGPCGE-UHFFFAOYSA-N 0.000 description 1
- 125000003261 o-tolyl group Chemical group [H]C1=C([H])C(*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 150000004880 oxines Chemical class 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- SLIUAWYAILUBJU-UHFFFAOYSA-N pentacene Chemical compound C1=CC=CC2=CC3=CC4=CC5=CC=CC=C5C=C4C=C3C=C21 SLIUAWYAILUBJU-UHFFFAOYSA-N 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class 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 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000553 poly(phenylenevinylene) Chemical class 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 1
- 239000011698 potassium fluoride Substances 0.000 description 1
- 235000003270 potassium fluoride Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
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- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical class [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 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
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 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
- 238000003860 storage Methods 0.000 description 1
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- 230000008022 sublimation Effects 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- FKHIFSZMMVMEQY-UHFFFAOYSA-N talc Chemical compound [Mg+2].[O-][Si]([O-])=O FKHIFSZMMVMEQY-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
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- 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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- WLPUWLXVBWGYMZ-UHFFFAOYSA-N tricyclohexylphosphine Chemical compound C1CCCCC1P(C1CCCCC1)C1CCCCC1 WLPUWLXVBWGYMZ-UHFFFAOYSA-N 0.000 description 1
- CYTQBVOFDCPGCX-UHFFFAOYSA-N trimethyl phosphite Chemical compound COP(OC)OC CYTQBVOFDCPGCX-UHFFFAOYSA-N 0.000 description 1
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- 235000019798 tripotassium phosphate Nutrition 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- BWHDROKFUHTORW-UHFFFAOYSA-N tritert-butylphosphane Chemical compound CC(C)(C)P(C(C)(C)C)C(C)(C)C BWHDROKFUHTORW-UHFFFAOYSA-N 0.000 description 1
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Images
Description
一方、1,10−フェナントロリン誘導体の合成については、いくつかの合成法が既に報告されている[非特許文献3、4]。
すなわち、本発明は、フェナントロリンの3位でAと結合していることが大切である。
本発明の第2は、請求項1記載の一般式(1)で表される1,10−フェナントロリン誘導体よりなる電子輸送材料に関する。
本発明の第3は、請求項1記載の一般式(1)で表される1,10−フェナントロリン誘導体よりなる電子注入材料に関する。
本発明の第4は、一対の電極間に請求項1記載の一般式(1)で表される1,10−フェナントロリン誘導体を少なくとも一種含有する層を含む有機電界発光素子に関する。
一般式(3)で示されるアリールボロン酸誘導体は、対応するハロゲン化アリールなどから公知の製造方法により製造することができる[Tetrahedron,58,9633(2002).]。
本発明の新規な1,10−フェナントロリン誘導体の製造は、通常、塩基の存在下で遷移金属錯体を触媒として用いたカップリング反応で行う。
塩基の例としては、例えば、炭酸ナトリウム、炭酸水素ナトリウム、水酸化カリウム、炭酸セシウム、リン酸三カリウムなどが挙げられるが、とくに炭酸ナトリウムが好ましい。
発光材料としては、アクリドン誘導体、キナクリドン誘導体、クマリン誘導体(例えば、クマリン1、クマリン6、クマリン110、クマリン153)、ピラン誘導体(例えば、DCM1,DCM2)、オキサゾン誘導体(例えば、ナイルレッド)、ベンゾオキサゾール誘導体、ベンゾチアゾール誘導体、ベンズイミダゾール誘導体、縮合多環式芳香族炭化水素およびその誘導体(例えば、ピレン、ペリレン、クリセン)、トリアリールアミン誘導体、有機金属錯体[例えば、トリス(8−ヒドロキシキノリナト)アルミニウム(Alq3)]などを挙げることができる。
有機電界発光素子において、発光層のホスト材料と電子輸送層の材料が異なるとき、発光層にホスト材料とドーパン材料(ゲスト材料)の混合物、その上層の電子輸送層に電子輸送材料が積層した構造となる。この場合、ホスト材料の全般にドーパント材料が含まれていることになる。一方、発光層のホスト材料と電子輸送層の材料に同じ材料を使用した場合、発光層にホスト材料とドーパント材料の混合物、その上層の電子輸送層にホスト材料が積層した構造となる。この場合、ホスト材料の一部にドーパント材料が含まれていることになる。いいかえれば、「ドーパント材料はホスト材料の全般に含まれていても、部分的に含まれていても良い。」ということになる。
また、トリス(2−フェニルピリジン)イリジウム、トリス〔2−(2−ベンゾチオフェニル)ピリジン〕イリジウム、トリス(1−フェニルイソキノリン)イリジウム、ビス(1−フェニルイソキノリン)(アセチルアセトナト)イリジウムなどがリン光性材料として挙げられる。
例示化合物番号1−1の化合物{1,4−ビス(1,10−フェナントロリン−3−イル)ベンゼン}の製造
有機電界発光素子の作製
厚さ100nmのITO透明電極を有する25mm×25mmサイズのガラス基板を洗浄剤(商品名:セミコクリーン56)、超純水、アセトン、イソプロパノールを用いて超音波洗浄した。次いで、イソプロパノール中で煮沸した後、UV/オゾン洗浄したものを透明導電性支持基板として使用した。先ず、下記式
実施例2において、電子輸送層に例示化合物番号1−1の化合物(フェナントロリンの3位でAと結合している)を使用する代わりに、下記式
有機電界発光素子の作製
厚さ100nmのITO透明電極を有する25mm×25mmサイズのガラス基板をアセトン、洗浄剤(商品名:セミコクリーン56)、イソプロパノールを用いて超音波洗浄した。次いで、イソプロパノール中で煮沸した後、UV/オゾン洗浄したものを透明導電性支持基板として使用した。先ず、前記のTPDPES(ポリエーテルスルホン化合物、分子量10,000〜30,000)(20mg)と前記のTBPAH[トリス(4−ブロモフェニル)アンモニウムヘキサクロロアンチモネート](2mg)の1,2−ジクロロエタン(4mL)溶液をスピンコート(回転数:1,500rpm)した後、加熱乾燥して厚さ10nmの薄膜層を作製し、正孔注入層とした。次に、このガラス基板を真空蒸着装置内に設置し、正孔輸送層としてN,N′−ジ(1−ナフチル)−N,N′−ジフェニル−4,4′−ジアミノビフェニル(α−NPD)を30nmの厚さに蒸着した。次に、ホスト材料として前記α−NPD、ドーパント材料として下記式
実施例3において、電子輸送層に例示化合物番号1−1の化合物を使用する代わりに、トリス(8−ヒドロキシキノリナト)アルミニウム(Alq3)を使用した以外は、実施例3に記載の操作に従い、有機電界発光素子を作製した。この素子に、1.0mAの直流電流を流したところ、輝度1,870cd/m2でルブレンからの黄色の発光が得られた。このときの駆動電圧は6.0Vであった。
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