Polaron dissociation in conducting polymers by high electric fields

被引：90

作者：

Rakhmanova, SV ^{[1
]}

Conwell, EM ^{[1
]}

机构：

[1] Univ Rochester, Dept Chem, Ctr Photoinduced Charge Transfer, Rochester, NY 14627 USA

来源：

APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 11期

关键词：

D O I：

10.1063/1.124741

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

It has been accepted that addition of an electron or hole to a conducting polymer chain causes the chain to distort, creating a large polaron. We show, by numerical solution of the coupled equations for the electron wave functions and the lattice displacements on a polyacetylene chain with an extra electron, that the polaron does not form in electric fields greater than or equal to 6x10(4) V/cm. In fields greater than or equal to 10(6) V/cm, an already formed polaron will be dissociated. Implications for current versus voltage of a light-emitting diode at high fields will be discussed. (C) 1999 American Institute of Physics. [S0003-6951(99)01037-2].

引用

页码：1518 / 1520

页数：3

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