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Browse Journals & Magazines > Applied Physics Letters ...> Volume:79 Issue:25 Help

Composition dependence of the energy gap of Zn1-x-yMgxBeySe quaternary alloys nearly lattice matched to GaAs

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8 Author(s)
Godo, K. ; Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan ; Makino, H. ; Cho, M.W. ; Chang, J.H.
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The composition dependence of the energy gap (Eg) of Zn1-x-yMgxBeySe quaternary alloys grown by molecular-beam epitaxy was investigated. The energy gap of Zn1-x-yMgxBeySe can be controlled in a range of 2.7 eV≪Eg≪3 eV under nearly lattice-matching conditions to GaAs(001). The phenomenological formula for the energy gap of ZnMgBeSe quarterly is obtained using the bowing parameters theoretically or experimentally estimated for the ternary compounds. These results show that nonlinear behavior was observed on the composition dependence of the energy gap as the Be and Mg compositions increased. © 2001 American Institute of Physics.

Published in:
Applied Physics Letters  (Volume:79 ,  Issue: 25 )

Date of Publication: Dec 2001

Page(s):
4168 - 4170
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.1424064
Date of Current Version :
18 June 2009
Issue Date :
Dec 2001

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