DENSITY OF STATE VARIATION IN POLYPYRROLE AS A FUNCTION OF PRESSURE UP TO 1.5 GPA

被引：16

作者：

LUNDIN, A ^{[1
]}

LUNDBERG, B ^{[1
]}

SAUERER, W ^{[1
]}

NANDERY, P ^{[1
]}

NAEGELE, D ^{[1
]}

机构：

[1] BASF AG,W-6700 LUDWIGSHAFEN,GERMANY

来源：

SYNTHETIC METALS | 1990年 / 39卷 / 02期

关键词：

D O I：

10.1016/0379-6779(90)90188-Q

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electrical resistance (temperature and pressure dependence) and room temperature compressibility measurements for electrochemically synthesized polypyrrole are reported. We find that in this relatively highly conducting (20 S cm-1) polymer the conducting mechanism is governed by variable range hopping. From the pressure dependence of Mott's parameter, T(o), corrected for by compressibility data, the density of localized states at the Fermi level can be evaluated and has been found to increase by about 70% up to 1.5 GPa. From the experimental data of resistance and compressibility, beta, we derive an expression for the pressure dependence of the conductivity, sigma(P) = sigma(T)(1 + beta-P) exp[(P/P(o)n], where n congruent-to 3/4.

引用

页码：233 / 242

页数：10

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