Electric-field-dependent percolation model of charge-carrier mobility in amorphous organic semiconductors

被引：31
|
作者：
Limketkai, B. N. [1 ]
Jadhav, P. [1 ]
Baldo, M. A. [1 ]
机构：
[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
来源：
PHYSICAL REVIEW B | 2007年 / 75卷 / 11期
关键词：
D O I：
10.1103/PhysRevB.75.113203
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Understanding the electric field dependence of charge-carrier mobility is central to the rational design of organic semiconductor devices. We present an analytic description of mobility by considering nonequilibrium carrier distributions within a percolation framework. The theory is compared to measurements by Brutting [Org. Electron. 2, 1 (2001)] of the current-voltage and mobility of the archetype small molecule tris(8-hydroxyquinoline) aluminum. The theory accurately reproduces the temperature, carrier density, and electric field dependences of the experimental data.
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页数：4
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