Optical investigation of modulation-dolpe In(0.53)Ga(0.47)As /In(0.48)Al(0.52)As multiple quantum well heterostructures

The results of the first optical studies of modulation-doped In(0.53)Ga(0.47)As/In(0.48)Al(0.52)As multiple quantum well heterostructures are presented. By a combination of luminescence and absorption measurements, intrinsic and extrinsic luminescence processes have been distiguished. It is shown th...

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Bibliographic Details
Published in:Applied physics letters 1985-01, Vol.46, p.184-186
Main Authors: Penna, A F S, Shah, J, Pinczuk, A, SIVCO, D, Cho, A Y
Format: Article
Language:English
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Summary:The results of the first optical studies of modulation-doped In(0.53)Ga(0.47)As/In(0.48)Al(0.52)As multiple quantum well heterostructures are presented. By a combination of luminescence and absorption measurements, intrinsic and extrinsic luminescence processes have been distiguished. It is shown that the intrinsic luminescence dominates above 70 K and results from recombination of two-dimensional electron plasma with photoexcited holes. Spectral line shape analysis yields important sample parameters. The use of As2 source appears to enhance the purity of the material as compared to the material grown with As4 source.
ISSN:0003-6951