TEMPERATURE AND AGING TIME-DEPENDENCE OF THE CONDUCTIVITY IN A CONDUCTING POLYMER - A UNIFIED PICTURE

被引：12

作者：

SIXOU, B ^{[1
]}

MERMILLIOD, N ^{[1
]}

TRAVERS, JP ^{[1
]}

机构：

[1] CEN GRENOBLE,DEPT ETUD MAT,SERV GENIE SURFACE & APPLICAT,CEA,DIRECT TECHNOL AVANCEES,F-38054 GRENOBLE 9,FRANCE

来源：

EUROPHYSICS LETTERS | 1995年 / 30卷 / 03期

关键词：

D O I：

10.1209/0295-5075/30/3/006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The conductivity of the conducting polymer polypyrrole was measured as a function of time t(a) during aging at 120 degrees C, and as a function of temperature T between 15 K and 300 K for various aging times. It is shown that the dependence of the conductivity with time and temperature for long aging times merges into a unified expression: ln{sigma(t(a), T)} proportional to - (t(a)/T)(1/2). Such a behaviour can be accounted for by a model in which the conductivity of aged polypyrrole is governed by a hopping mechanism between conducting clusters separated by an insulating layer, the thickness of which increases as root t(a).

引用

页码：157 / 162

页数：6

共 18 条

[1]

ABELES B, 1975, ADV PHYS, V24, P407, DOI 10.1080/00018737500101431

[2]

BESSON J, 1987, CORROSION MATERIAUX

[3] LOGARITHMIC TEMPERATURE-DEPENDENCE OF RESISTIVITY IN HEAVILY DOPED CONDUCTING POLYMERS AT LOW-TEMPERATURE [J].