Browsing by Author "Huang, W. P."

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Type-I/type-II exciton in strained Si/SiGe multi-QWs
(2008-03-01)
Wang, K. Y.
;
Huang, W. P.
;
Lin, T. C.
;
Lee, C. P.
;
Sung, Y. T.
Using magneto-luminescence (ML) measurement, we have observed the formation of magneto-excitons with either type-I or type-II band alignment depending on the strain distribution in the Si/SiGe quantum well structures. This observation is consistent with the analysis of strain-induced band shifting and exciton-transition energy. (c) 2007 Elsevier B.V. All rights reserved.