A theoretical model for carrier transport in disordered organic materials

被引：6
|
作者：
Wang, D
Shen, J [1 ]
机构：
[1] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA
[2] Arizona State Univ, Ctr Solid State Elect Res, Tempe, AZ 85287 USA
[3] Arizona State Univ, Dept Chem Bio & Mat Engn, Tempe, AZ 85287 USA
来源：
SYNTHETIC METALS | 2000年 / 111卷
关键词：
space charge; organic; OLED; trap; hopping; disorder;
D O I：
10.1016/S0379-6779(99)00365-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A theoretical model based on exponential energy dependent mobility and density of states is proposed to describe the carrier transport in disordered organic materials. A power-law current-voltage relationship is derived and the power factor is found to depend on the half-width of the density of state distribution. The increased carrier concentration begins to populate higher mobility states, causing a higher averaged mobility. The combined effect of increased carrier concentration and the higher averaged mobility leads to the super-linear current-voltage relationship. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：349 / 351
页数：3
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