Enhancement of Luminance Yield of Blue Organic Light-Emitting Diode
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概要
- 論文の詳細を見る
In this study, a buffer layer of polytetrafluoroethylene (Teflon) was inserted between the indium tin oxide (ITO) and hole-transport layers of blue organic light-emitting diodes to improve their luminance efficiency. The thicknesses of the hole-transport layer, N,N$'$-diphenyl-N,N$'$-bis(1-naphthyl)-(1,1$'$-biphenyl)-4,4$'$-diamine (NPB) and the Teflon and dopant layers, 4,4$'$-bis(9-ethyl-3-carbazovinylene)-1,1$'$-biphenyl (ADS080) were varied to obtain a high luminance yield. The dopant concentration in the host-emitting layer was also investigated. With a Teflon buffer layer of 1 nm, the organic light-emitting diode (OLED) emission became more stable. The luminance intensity and efficiency increased from 931 to 1734 cd/m2 at 8 V and from 1.6 to 2.25 cd/A at 40 mA/cm2, respectively. A double separately doped structure with optimum separation between its two doped layers shows apparent improvement on the luminance yield.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2005-04-15
著者
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JUANG Fuh-Shyang
Institute of Electro-Optical and Materials Science, National Formosa University
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Juang Fuh-shyang
Institute Of Electro-optical And Materials Science National Huwei University Of Science And Technolo
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Juang Fuh-shyang
Institute Of Electro-optical And Materials Science National Formosa University
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Su Chiu-yen
Institute Of Electrical Engineering Kun Shan University Of Science And Technology
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Chang Shan-Chou
Institute of Electrical Engineering, Kun Shan University of Science and Technology 949, Dawan Road,
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Chen Yen-Fong
Institute of Electrical Engineering, Kun Shan University of Science and Technology 949, Dawan Road,
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Chen Yen-fong
Institute Of Electrical Engineering Kun Shan University Of Science And Technology
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Chang Shan-chou
Institute Of Electrical Engineering Kun Shan University Of Science And Technology
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Juang Fuh-Shyang
Institute of Electo-optical and Materials Science, National Formosa University, 64 Wunhua Road, Huwei, Yunlin 632-08, Taiwan
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