Ambipolar Transport in Field-Effect Transistors Based on Composite Films of Poly(3-hexylthiophene) and Fullerene Derivative
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概要
- 論文の詳細を見る
Ambipolar field effects in poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric methyl ester (PCBM) composite films have been studied. At ratios of $x$ = [PCBM]/([P3HT]+[PCBM]) = 0.67–0.9, an ambipolar transport appeared. Hole and electron mobilities were $5.0\times 10^{-5}$ and $2.5\times 10^{-4}$ cm2/(V s), respectively, at $x = 0.75$. The hole mobility of $1.4\times 10^{-3}$ cm2/(V s) in pure P3HT decreased by blending with PCBM. By increasing the PCBM content, the electron mobility increased to $1.0\times 10^{-2}$ cm2/(V s) in pure PCBM. The threshold voltage in pure P3HT for p-type transport increased upon blending of PCBM, indicating that PCBM depresses the induction of holes. On the other hand, the threshold voltages of PCBM for n-type transport decreased in composite films. The results are discussed taking into consideration the fact that P3HT enhances the induction of electrons in composite films and/or the hole injection from drain to channel.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2007-02-25
著者
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Kaneto Keiichi
Graduate School Of Life Science And System Engineering Kyushu Institute Of Technology
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Shibao Miho
Graduate School Of Life Science And Systems Engineering Kyushu Institute Of Technology
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Takashima Wataru
Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu 808-0196, Japan
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Morita Takeomi
Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu 808-0196, Japan
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Morita Takeomi
Graduate School of Life Science and System Engineering, Kyushu Institute of Technology, Kitakyushu 808-0196, Japan
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Shibao Miho
Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu 808-0196, Japan
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Takashima Wataru
Graduate School of Life Science and System Engineering, Kyushu Institute of Technology, Kitakyushu 808-0196, Japan
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