TITLE

Band-edge absorption coefficients from photoluminescence in semiconductor multiple quantum wells

AUTHOR(S)
Kost, Alan; Lee, H. C.; Zou, Yao; Dapkus, P. D.; Garmire, Elsa
PUB. DATE
April 1989
SOURCE
Applied Physics Letters;4/3/1989, Vol. 54 Issue 14, p1356
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We describe a novel approach to determining absorption coefficients in thin films using luminescence. The technique avoids many of the difficulties typically encountered in measurements of thin samples, Fabry–Perot effects, for example, and can be applied to a variety of materials. We examine the absorption edge for GaAs/AlGaAs multiple quantum well structures with quantum well widths ranging from 54 to 193 Å. Urbach parameters and excitonic linewidths are tabulated.
ACCESSION #
9830577

 

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