Color-Tunable Polymer Light-Emitting Diodes with Conjugated Polymer Homojunctions
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概要
- 論文の詳細を見る
Color-tunable light-emitting diodes with a polymer homojunction structure have been demonstrated. The homojunction structure consisted of two emissive layers, and poly(9,9-dioctylfluorene) (PFO) was used as the host material in both emissive layers. One emissive layer was composed of a blend of blue-emitting PFO and its green-emitting copolymer, and the other one was composed of a blend of green-emitting PFO copolymer and red-emitting poly[2-methoxy-5(2$'$-ethylhexyloxy)-1,4-phenylene vinylene] (MEHPPV). In device characterization, when the injection current was increased, partial electrons could easily pass through the second emissive layer and flow into the first emissive layer near the anode, because there was no potential barrier existing in the homojunction. Therefore, the emission color of our devices could be tuned as orange, yellow, white, and cyan by adjusting the injection current or bias voltage.
- 2010-04-25
著者
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Huang Chun-yuan
Department Of Applied Science National Taitung University
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Su Yan-kuin
Institute Of Electro-optical Science And Engineering Advance Optoelectronics Technology Center Natio
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Chiao-Yang Cheng
Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
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Cheng Chiao-Yang
Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
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M. V.
Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
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Ying-Chih Chen
Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan
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Tsung-Syun Huang
Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan
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Ten-Chin Wen
Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
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Tzung-Fang Guo
Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
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Yan-Kuin Su
Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan
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