Electric-field-dependent charge transport in organic thin-film transistors

被引：70

作者：

Wang, Liang ^{[1
]}

Fine, Daniel ^{[1
]}

Basu, Debarshi ^{[1
]}

Dodabalapur, Ananth ^{[1
]}

机构：

[1] Univ Texas, Microelect Res Ctr, Austin, TX 78758 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2496316

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This article reports the experimental study of the electric-field-dependent charge transport mechanisms in polycrystalline organic thin-film field-effect transistors. This work represents the quantitative measurement of the temperature and electric-field dependences of the mobility in organic thin-film transistors with scaled device geometry when carrier densities are at levels of practical importance. The true behavior of field-dependent mobility was extracted by minimizing contact effects consistently over a range of channel lengths. In these partially ordered systems, experimental data suggest that thermally activated and field-assisted hopping transport between disorder-induced localized states dominates over intrinsic polaronic transport seen in organic single crystals. The experimental results were found to exhibit a Frenkel-Poole-type dependence consistently over a wide range of channel lengths, fields, and temperatures. (c) 2007 American Institute of Physics.

引用

页数：8

共 37 条

[1] Soluble and processable regioregular poly(3-hexylthiophene) for thin film field-effect transistor applications with high mobility [J].