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Low-temperature growth of Ge1-xSnx thin films with strain control by molecular beam epitaxy
被引:24
|作者:
Lin, Hai
[1
]
Chen, Robert
[2
]
Huo, Yijie
[2
]
Kamins, Theodore I.
[2
]
Harris, James S.
[2
]
机构:
[1] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA
[2] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA
关键词:
GeSn alloy;
Molecular beam epitaxy;
Strain;
Structural characterization;
Epitaxial growth;
ALLOYS;
D O I:
10.1016/j.tsf.2012.01.047
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
High-quality Ge1-xSnx thin films on InGaAs buffer layers have been demonstrated using low-temperature growth by molecular beam epitaxy. X-ray diffraction and secondary ion mass spectrometry are used to determine the strain and Sn concentration. Up to 10.5% Sn has been incorporated into the Ge1-xSnx thin film without Sn precipitation, as verified by transmission electron microscopy. Roughened surfaces are found for tensile strained Ge1-xSnx layers. (c) 2012 Elsevier B.V. All rights reserved.
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页码:3927 / 3930
页数:4
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