The effect of the surface Fermi level pinning on the properties of &dgr;-doped systems
作者:
J. F. Sampaio,
S. L. S. Freire,
E. S. Alves,
期刊:
Journal of Applied Physics
(AIP Available online 1997)
卷期:
Volume 81,
issue 1
页码: 530-532
ISSN:0021-8979
年代: 1997
DOI:10.1063/1.364092
出版商: AIP
数据来源: AIP
摘要:
Electronic potential profile, energy levels, and their respective occupations are self-consistently calculated for &dgr;-doped semiconductor films, taking into account the charge depleted by the surface. This effect is considered by requiring the Fermi level at the surfaces to be at some fixed value relative to the band gap edges. The electron concentration in the potential well is calculated for different values of the film thickness and of the surface chemical potential. The results show that these calculations can be helpful in determining the Fermi level pinning at the surface by fitting Hall concentrations of &dgr;-doped samples.©1997 American Institute of Physics.
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