Interactions between hydrogen and group VI donors in GaAs and GaAlAs
作者:
B. Theys,
B. Machayekhi,
J. Chevallier,
K. Somogyi,
K. Zahraman,
P. Gibart,
M. Miloche,
期刊:
Journal of Applied Physics
(AIP Available online 1995)
卷期:
Volume 77,
issue 7
页码: 3186-3193
ISSN:0021-8979
年代: 1995
DOI:10.1063/1.359566
出版商: AIP
数据来源: AIP
摘要:
GaAs and GaAlAs layers doped with different group VI donors (S, Se, Te) have been exposed to hydrogen plasma. By secondary ion mass spectroscopy, it is shown that, as in Si‐doped materials, the hydrogen diffusion strongly depends on the AlAs content. Electronic transport measurements indicate that after hydrogen diffusion the electron concentration systematically decreases and their mobility increases, demonstrating clearly the passivation of the group VI donors by hydrogen. ©1995 American Institute of Physics.
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