Scattering rates for holes near the valence‐band edge in semiconductors
作者:
T. Brudevoll,
T. A. Fjeldly,
J. Baek,
M. S. Shur,
期刊:
Journal of Applied Physics
(AIP Available online 1990)
卷期:
Volume 67,
issue 12
页码: 7373-7382
ISSN:0021-8979
年代: 1990
DOI:10.1063/1.344524
出版商: AIP
数据来源: AIP
摘要:
In this paper, we discuss and compare the rates for dominant scattering mechanisms for holes in semiconductors, including ionized impurity scattering, polar and nonpolar optical‐phonon scattering, and inelastic acoustic deformation potential scattering. The scattering rates for these mechanisms have been reviewed for the purpose of finding reliable expressions to be used in Monte Carlo simulation of hole transport inp‐type III‐V semiconductor devices. In the scarce literature on hole scattering rates, we have found several discrepancies. Here, we present corrected rates for ionized impurity scattering and for scattering by polar optical phonons. In addition, we have derived new expressions for theinelasticacoustic deformation potential scattering rates where we also have included a series expansion for the phonon occupation number, beyond the equipartition approximation.
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