Highly Efficient and Vivid-Red Phosphors Bearing 2,3-Diphenylquinoxaline Units and Their Application to Organic Light-Emitting Devices(Characterization of Organic Devices)(<Special Section>Recent Progress in Organic Molecular Electronics)
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概要
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Newly designed cyclometalated iridium phosphors bearing 2, 3-diphenylquinoxalines were characterized to provide highly efficient and vivid-red emitting materials for electrophosphorescent organic light-emitting devices. Excellent quantum efficiencies for photoluminescence (PL) within a range 50-79% were observed in dichloromethane solutions at room temperature. A greatly improved PL decay lifetime of 1.1μsec was also observed in CBP coevaporated film. Luminescence peak wavelengths of the phosphors lay within a preferable range 653-675 nm in evaporated films. The most vivid-red electroluminescence with 1931 CIE chromaticity coordinates of (x=0.70, y=0.28) was successfully attained.
- 2004-12-01
著者
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Fujii Hiroyuki
Yamaguchi Univ. Yamaguchi Jpn
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Watanabe K
Department Of Physics Tokyo University Of Science
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Mao Lisheng
Handai Frontier Research Center Graduate School Of Engineering Osaka University
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WAKISAKA Kenichiro
Materials and Devices Development Center BU, Sanyo Electric Co., Ltd.
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Sakurai Hidehiro
Department Of Applied Chemistry Graduate School Of Engineering Osaka University
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TANI Kazuyasu
Handai Frontier Research Center, Graduate School of Engineering, Osaka University
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FUJII Hiroyuki
Materials and Devices Development Center BU, SANYO Electric Co., Ltd.
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SAKURAI Hidehiro
Handai Frontier Research Center, and Department of Applied Chemistry, Graduate School of Engineering
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HIRAO Toshikazu
Handai Frontier Research Center, and Department of Applied Chemistry, Graduate School of Engineering
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WATANABE Ken-ichi
Institute for Nuclear Study, University of Tokyo
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Hirao Toshikazu
Department Of Applied Chemistry Graduate School Of Engineering Osaka University
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Tani Kazuyasu
Handai Frontier Research Center Graduate School Of Engineering Osaka University
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Wakisaka Kenichiro
Materials And Devices Development Center Bu Sanyo Electric Co. Ltd.
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Fujii H
Sanyo Electric Co. Ltd.
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HIRAO Toshikazu
Department of Applied Chemistry, Graduate School of Engineering, Osaka University
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