Is granularity the determining feature for electron transport in conducting polymers ?

被引:37
作者
Travers, JP [1 ]
Sixou, B
Berner, D
Wolter, A
Rannou, P
Beau, B
Pépin-Donat, B
Barthet, C
Guglielmi, M
Mermilliod, N
Gilles, B
Djurado, D
Attias, AJ
Vautrin, M
机构
[1] UJF, CEA, DRFMC, UMR CNRS 5819,Lab Phys Met Synthet, F-38054 Grenoble, France
[2] UJF, CEA, DRFMC, UMR CNRS 5819,Lab Physicochim Mol, F-38054 Grenoble 9, France
[3] CEA, DEM, Serv Physicochim Mat, F-33054 Grenoble, France
[4] Univ Grenoble 1, Spectrometrie Phys Lab, F-38402 St Martin Dheres, France
[5] Off Natl Etud & Rech Aerosp, Direct Mat, F-92322 Chatillon, France
关键词
transport measurements; conductivity; polypyrrole; polyaniline; polythiophene and derivatives;
D O I
10.1016/S0379-6779(98)00354-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
From several studies of transport properties of conducting polymers (CP) as a function of a parameter related to their structure or microstructure we show that in strongly disordered CP, electron transport is dominated by hopping between conducting grains separated by insulating barriers. In CSA-protonated polyaniline, a weakly disordered CP which exhibits a metallic-like behaviour, several results indicate that heterogeneities play a major role in the transport process. Thus, we conclude that heterogeneous disorder appears as a key parameter which controls the conductivity of a large majority of CP.
引用
收藏
页码:359 / 362
页数:4
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