Trap-controlled dispersive transport in systems of randomly fluctuating localized states

被引:2
作者
Arkhipov, VI
Adriaenssens, GJ
机构
[1] Laboratorium voor Halfgeleiderfysica, Katholieke Universiteit Leuven, Heverlee-Leuven, B-3001
来源
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1997年 / 76卷 / 01期
关键词
D O I
10.1080/01418639708241075
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Trap-controlled dispersive carrier transport and recombination are considered in materials with fluctuating localized states. Under these conditions the distribution of effective activation energies (DEAE) can be different from the momentary energy distribution of localized states. The former rather than the latter governs kinetics of all processes which are controlled by trapping and release of charge carriers. It is shown that DEAE and the momentary distribution are rather similar for shallow states and can be very different for sufficiently deep traps. As a result, the fluctuations do not affect dispersive transport characteristics at short times but either terminate the dispersive transport or make its characterisrics temperature independent at longer times.
引用
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页码:11 / 22
页数:12
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