Impedance spectroscopy of polymeric light emitting devices based on different poly(p-phenylene-vinylene) derivatives

被引：7

作者：

Forero-Lenger, S ^{[1
]}

Gmeiner, J ^{[1
]}

Brütting, W ^{[1
]}

Schwoerer, M ^{[1
]}

机构：

[1] Univ Bayreuth, D-95440 Bayreuth, Germany

来源：

SYNTHETIC METALS | 2000年 / 111卷

关键词：

impedance; light emitting devices; poly(p-phenylene-vinylene);

D O I：

10.1016/S0379-6779(99)00338-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Light emitting devices fabricated from different poly(p-phenylene-vinylene) (PPV) derivatives prepared by the precursor route (the unsubstituted homopolymer, a dimethoxy-substituted copolymer and an acetate-substituted copolymer) and devices based on a soluble dialkoxy-substituted homopolymer are compared with respect to their temperature-dependent impedance characteristics. Although similar activation energies of the conductivity in the range 0.4-0.5 eV are found for all polymers, the magnitude of the dielectric loss is significantly different in the polymers indicating a substantial difference in the amount of doping and/or impurities. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：165 / 168

页数：4

共 8 条

[1] Electric-field and temperature dependence of the hole mobility in poly(p-phenylene vinylene) [J].