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3 September 1992 Excitonic recombination of degenerate two-dimensional electrons with localized photoexcited holes in a single heterojunction quantum well
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Proceedings Volume 1675, Quantum Well and Superlattice Physics IV; (1992) https://doi.org/10.1117/12.137601
Event: Semiconductors '92, 1992, Somerset, NJ, United States
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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Patrick A. Folkes, Mitra B. Dutta, Sergey Rudin, Hongen Shen, Monica Alba Taysing-Lara, Doran D. Smith, Peter G. Newman, and Melanie W. Cole "Excitonic recombination of degenerate two-dimensional electrons with localized photoexcited holes in a single heterojunction quantum well", Proc. SPIE 1675, Quantum Well and Superlattice Physics IV, (3 September 1992); https://doi.org/10.1117/12.137601
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