Title : ( Comparison of electron-plasmon scattering effect on low-field electron mobility in ZnO and SiC )
Authors: Hadi Arabshahi , Mahmood Rezaee Roknabadi ,Abstract
Iterative technique is used to solve Boltzmann transport equation for calculating temperature and doping dependencies of electron mobility in ZnO and SiC materials. The two-mode nature of the polar optic phonons is considered jointly with deformation potential acoustic, piezoelectric, ionized impurity and electron-plasmon scattering. Band non-parabolicity, admixture of p functions, arbitrary degeneracy of the electron distribution, and the screening effects of free carriers on the scattering probabilities are incorporated. It is shown that electron-plasmon scattering affects substantially the low-field electron mobility in bulk ZnO and SiC. It is found that the electron mobility decreases monotonically as the temperature increases from 300 - 600 K. The low temperature value of electron mobility increases significantly with increasing doping concentration. The iterative results are in fair agreement with other recent calculations obtained using the relaxation-time approximation and experimental methods.
Keywords
, Electron-plasmon, relaxation-time, Boltzmann equation, non-parabolicity, degeneracy.@article{paperid:1011935,
author = {Arabshahi, Hadi and Rezaee Roknabadi, Mahmood},
title = {Comparison of electron-plasmon scattering effect on low-field electron mobility in ZnO and SiC},
journal = {African Journal of mathematics and Computer Science Research},
year = {2009},
volume = {2},
number = {9},
month = {October},
issn = {2006-9731},
pages = {189--195},
numpages = {6},
keywords = {Electron-plasmon; relaxation-time; Boltzmann equation; non-parabolicity; degeneracy.},
}
%0 Journal Article
%T Comparison of electron-plasmon scattering effect on low-field electron mobility in ZnO and SiC
%A Arabshahi, Hadi
%A Rezaee Roknabadi, Mahmood
%J African Journal of mathematics and Computer Science Research
%@ 2006-9731
%D 2009