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Epitaxial Growth of CuAu–Ordered CuInSe2 Structural Polytypes by Migration Enhanced Epitaxy

Published online by Cambridge University Press:  10 February 2011

B. J. Stanbery ,
C.-H. Chang ,
S. Kim ,
S. Kincal ,
G. Lippold ,
S. P. Ahrenkiel ,
L. Li ,
T. J. Anderson  and
M. M. Al-Jassim
B. J. Stanbery
Affiliation:
Dept. of Chemical Engineering, University of Florida, P.O. Box 116005, Gainesville, FL 32611
C.-H. Chang
Affiliation:
Dept. of Chemical Engineering, University of Florida, P.O. Box 116005, Gainesville, FL 32611
S. Kim
Affiliation:
Dept. of Chemical Engineering, University of Florida, P.O. Box 116005, Gainesville, FL 32611
S. Kincal
Affiliation:
Dept. of Chemical Engineering, University of Florida, P.O. Box 116005, Gainesville, FL 32611
G. Lippold
Affiliation:
Institute for Surface Modification, Leipzig, Germany
S. P. Ahrenkiel
Affiliation:
National Renewable Energy Laboratory, Golden, CO
L. Li
Affiliation:
Dept. of Chemical Engineering, University of Florida, P.O. Box 116005, Gainesville, FL 32611
T. J. Anderson
Affiliation:
Dept. of Chemical Engineering, University of Florida, P.O. Box 116005, Gainesville, FL 32611
M. M. Al-Jassim
Affiliation:
National Renewable Energy Laboratory, Golden, CO
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Abstract

Migration-Enhanced Epitaxy (MEE) has been successfully employed to grow epitaxial films of the ternary compound CuInSe2 on (001) GaAs that are ordered in a CuAu crystallographic structure rather than the compound's equilibrium chalcopyrite structure. Evidence for this structural polytype is provided by XRD, TEM–TED, and Raman scattering data. Film growth under the conditions employed for this study occurs in a Stranski-Krastanov mode. The effects of growth system parameters and overall stoichiometry on 3–D island formation are described, including our observation that ordering of those islands into quasiperiodic self-assembled arrays occurs only in the case of nonstoichiometric copper excess.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 583 , 1999 , 195
Copyright
Copyright © Materials Research Society 2000

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Footnotes

†

Current address: 1101 S. Capitol of Texas Hwy., Suite 100F, Austin, TX 78746-6490.

‡

Current address: Oregon State University, Dept. of Chem. Eng., Corvallis, OR 97330.

References

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