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Competing Kinetic and Thermodynamic Processes in the Growth and Ordering of Ga0.5In0.5P

Published online by Cambridge University Press:  15 February 2011

Sarah R. Kurtz ,
J. M. Olson ,
D. J. Arent ,
A. E. Kibbler  and
K. A. Bertness
Sarah R. Kurtz
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401
J. M. Olson
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401
D. J. Arent
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401
A. E. Kibbler
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401
K. A. Bertness
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401
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Abstract

The band gap of Ga0.5In0.5P is studied as a function of growth temperature, growth rate, and substrate misorientation. As each of these parameters is independently varied the band gap first decreases, then increases, resulting in “U” shaped curves. Each “U” shaped curve shifts if any other growth parameter is varied. The data presented here can be divided into two regions of parameter space. In the low temperature, low substrate misorientation, high growth rate region, the band gap is shown to decrease with increasing growth temperature, decreasing growth rate, and increasing substrate misorientation. In the high temperature, high substrate misorientation, low growth rate region, the opposite trends are observed. The implications of these data on the ordering mechanism are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 312: Symposium P – Common Themes and Mechanisms of Epitaxial Growth , 1993 , 83
Copyright
Copyright © Materials Research Society 1993

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