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Band Alignment of Si1-xGex And Si1-x-y.GexCy Quantum Wells On Si (001)

Published online by Cambridge University Press:  10 February 2011

N. L. Rowell
Affiliation:
National Research Council, Ottawa, Canada K1A 0R6
R. L. Williams
Affiliation:
National Research Council, Ottawa, Canada K1A 0R6
G. C. Aers
Affiliation:
National Research Council, Ottawa, Canada K1A 0R6
H. Lafontaine
Affiliation:
SiGe Microsystems Inc., 1500 Montreal Road, Ottawa, Canada K1A 0R6
D. C. Houghton
Affiliation:
SiGe Microsystems Inc., 1500 Montreal Road, Ottawa, Canada K1A 0R6
K. Brunner
Affiliation:
Max-Planck-lnstitut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
K. Eberl
Affiliation:
Max-Planck-lnstitut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
O. Schmidt
Affiliation:
Max-Planck-lnstitut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
W. Winter
Affiliation:
Max-Planck-lnstitut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
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Abstract

Recent low-temperature photoluminescence (PL) studies will be discussed for coherent Si1-xGex. and Si1-xGexCy alloy multiple quantum wells on Si (001) substrates grown by either ultra-high vacuum chemical vapour deposition or solid source molecular beam epitaxy. An in-plane applied-stress technique will be described which removes systematically band edge degeneracies revealing the lower, PL-active CB. Applied-stress data taken with this technique at ultra-low excitation intensity proved intrinsic type II CB alignment in SiGe on Si (001). Apparent type I alignment observed at higher intensity will also be discussed. New applied stress PL results are presented for Si1-x-yGexCy quantum wells under various grown-in stress condition

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

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