All-Inkjet-Printed Organic Thin-Film Transistors with Silver Gate, Source/Drain Electrodes
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概要
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We report high-performance all-inkjet-printed organic thin-film transistors (OTFTs), where inkjet-printed silver electrodes, cross-linked poly(4-vinylphenol) (PVP) and 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) were used as gate/source/drain electrodes, a gate dielectric layer and an active semiconductor layer, respectively. To evaluate quality of the active semiconductor layer, we also fabricated OTFTs by using spin-coating and drop-casting methods for TIPS-pentacene layer on the inkjet-printed PVP gate dielectric layer. Comparable TFT electrical performances were obtained and well-crystallized TIPS-pentacene layer was formed for all cases. All TIPS-pentacene OTFTs show lower sub-threshold swing values than OTFTs with an evaporated pentacene active semiconductor layer on the inkjet-printed PVP gate dielectric layer. By using optimized inkjet-printing conditions, we obtained mobility of 0.06 cm2 V-1 s-1 and on/off ratio of $10^{4}$ for all-inkjet-printed OTFT.
- 2011-03-25
著者
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Lee Changhee
Department Of Mechanical Engineering Hanyang University
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Hong Yongtaek
Department Of Electrical Engineering And Computer Science Seoul National University
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Chung Seungjun
Department Of Electrical Engineering And Computer Science Seoul National University
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Kwon Soon-Ki
School of Materials Science and Engineering and ERI, Gyeongsang National University, Jinju 660-701, Korea
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Hong Yongtaek
Department of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Korea
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Jang Jongsu
Department of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Korea
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Cho Junhee
Department of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Korea
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Lee Changhee
Department of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Korea
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Lee Changhee
Department of Electrical and Computer Engineering, Inter-University Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea
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Chung Seungjun
Department of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Korea
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