Dispersive hole transport in poly(p-phenylene vinylene)

被引：169

作者：

Blom, PWM

Vissenberg, MCJM

机构：

[1] Philips Res Labs, NL-5656 AA Eindhoven, Netherlands

[2] Leiden Univ, Inst Lorentz, NL-2300 RA Leiden, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.80.3819

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The transient hole transport in poly(p-phenylene vinylene) (PPV) is investigated by measuring the response times of PPV-based light-emitting diodes. It is demonstrated that the observed response times are governed by the dispersive transport of holes in PPV. In terms of the stochastic transport model of Scher and Montroll, the results correspond to a dispersion parameter alpha = 0.45, independent of temperature. This indicates that the dispersion in hole transport in PPV is due mainly to structural disorder, rather than to energetic disorder.

引用

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页码：3819 / 3822

页数：4

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