Photocarrier Transport in Regioregular Poly (3-octadecylthiophene) : Optical Propertles of Condensed Matter
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概要
- 論文の詳細を見る
Charge carrier transport in regioregular poly(3-0ctadecylthiophene) has been studied by the time-of-flight method. The nature of transient photocurrent response is dispersive and holes were found to be the majority photocarriers with no detectable signal for electron transport. The hole mobility at room temperature and at an applied field of 1.3 x 10^5 V/cm has been measured to be 2.5 x 10^<-5> cm^2/V.s. Analysis of the transport mechanism confirms the predictions of the stochastic model of Scher and Montroll as indicated by the universal-scaling behavior of transient photocurrents when they were normalized with respect to transit time. The field and temperature dependence of hole mobility has been analyzed in terms of Poole-Frenkel and Ba^^<・・>ssler's Gaussian disorder model. The interpretation of the results of hole mobility measurement is made in terms of the concept of hopping among the polymer segments featuring a Gaussian distribution of energies with its variance of 74 meV.
- 社団法人応用物理学会の論文
- 2001-09-15
著者
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PANDEY Shyam
Fukuoka Industry Science and Technology Foundation
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Takashima Wataru
Department Of Computer Science And Electronics Faculty Of Computer Science And System Engineering
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Endo Takeshi
Department Of Biology Faculty Of Science Chiba University
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Rikitake Koichi
Department Of Computer Science And Electronics Kyushu Institute Of Technology
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Rikukawa Masahiro
Department Of Chemistry Sophia University
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Kaneto Keiichi
Department of Biological Functions and Engineering, Graduate School of Life Sciences and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu, Kitakyushu 808-0196, Japan
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