Determination of mobilities of charge carriers in electrochemically anion-doped polythiophene film

被引：53

作者：

Harima, Y

Kunugi, Y

Yamashita, K

Shiotani, M

机构：

[1] Hiroshima Univ, Fac Integrated Arts & Sci, Higashihiroshima 739, Japan

[2] Hiroshima Univ, Fac Engn, Dept Appl Chem, Higashihiroshima 739, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 317卷 / 3-5期

关键词：

D O I：

10.1016/S0009-2614(99)01378-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mobilities of positive charge carriers in a polythiophene film at different oxidation stages are evaluated on the bases of elaborate electrochemical measurements. The mobility in the low doping regime, most likely that of polarons, is 10(-6) cm(2) V-1 s(-1). The mobility starts to increase at around 0.2 mol% doping level and reaches 0.5 X 10(-2) cm(2) V-1 s(-1) in the heavily doped region. The drastic mobility increase by doping manifests changes in nature and/or kind of charge-carrying species, or the switching of conduction mechanisms in the ClO4-doped polythiophene film. (C) 2000 Elsevier Science B.V. All rights reserved.

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页码：310 / 314

页数：5

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