Mechanism of dc conduction in ferric chloride doped, poly(3-methyl thiophene)

被引：40
|
作者：
Singh, R
Kaur, A
Yadav, KL
Bhattacharya, D
机构：
[1] Natl Phys Lab, Polymer Phys Grp, New Delhi 110012, India
[2] Univ Delhi, Maitreyi Coll, Dept Phys, New Delhi 110021, India
[3] Cent Glass & Ceram Res Inst, Kolkata 700032, W Bengal, India
来源：
CURRENT APPLIED PHYSICS | 2003年 / 3卷 / 2-3期
关键词：
dc conductivity; poly(3-methyl thiophene); variable range hopping; tunneling; activation energy;
D O I：
10.1016/S1567-1739(02)00208-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Poly(3-methyl thiophene) has been synthesized by chemical oxidation method in an inert atmosphere using ferric chloride as a dopant. The doping level varies from 0.1 to 2.0 M. The dc conductivity has been measured in the temperature range 20-300 K. The observed dc conductivity data has been analyzed in the light of existing theoretical models. Different Mott's parameters such as characteristic temperature (T-0), density of states at Fermi level [N(E-F)], average hopping energy (W) and the average hopping distance (R) have been evaluated that agree well with the values reported earlier for the other conjugated polymers. A detailed analysis of the mechanism of charge transport in this system has been reported. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：235 / 238
页数：4
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