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Proceedings Paper

Excitonic recombination of degenerate two-dimensional electrons with localized photoexcited holes in a single heterojunction quantum well
Author(s): Patrick A. Folkes; Mitra B. Dutta; Sergey Rudin; Hongen Shen; Monica Alba Taysing-Lara; Doran D. Smith; Peter G. Newman; Melanie W. Cole
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Paper Abstract

We report the observation of the excitonic recombination of degenerate quasi-two-dimensional electrons with localized photoexcited holes. Low-temperature photoluminescence spectra exhibit a sharp Fermi surface and a well resolved 'Mahan' exciton resonance which is sensitive to electron density ns and temperature. We observe a sharp decrease in the exciton linewidth with a concomitant double peak spectrum which is attributed to the formation of biexcitons and a large discontinuity in the exciton groundstate energy at ns approximately equals 1.9 X 1011 cm-2. An abrupt transition from excitonic to free electron-hole recombination occurs at ns approximately equals 2.2 X 1011 cm-2.

Paper Details

Date Published: 3 September 1992
PDF: 9 pages
Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); doi: 10.1117/12.137601
Show Author Affiliations
Patrick A. Folkes, U.S. Army Electronics Technology and Devices Lab. (United States)
Mitra B. Dutta, U.S. Army Electronics Technology and Devices Lab. (United States)
Sergey Rudin, U.S. Army Electronics Technology and Devices Lab. (United States)
Hongen Shen, U.S. Army Electronics Technology and Devices Lab. (United States)
Monica Alba Taysing-Lara, U.S. Army Electronics Technology and Devices Lab. (United States)
Doran D. Smith, U.S. Army Electronics Technology and Devices Lab. (United States)
Peter G. Newman, U.S. Army Electronics Technology and Devices Lab. (United States)
Melanie W. Cole, U.S. Army Electronics Technology and Devices Lab. (United States)


Published in SPIE Proceedings Vol. 1675:
Quantum Well and Superlattice Physics IV

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