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Excitonic Photoluminescence in Semiconductor Quantum Wells: Plasma versus Excitons

S. Chatterjee·C. Ell·S. Mosor·G. Khitrova·H. M. Gibbs·W. Hoyer·M. Kira·S. W. Koch·J. P. Prineas·H. Stolz
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Abstract

Time-resolved photoluminescence spectra after nonresonant excitation show a distinct 1s resonance, independent of the existence of bound excitons. A microscopic analysis identifies excitonic and electron-hole plasma contributions. For low temperatures and low densities the excitonic emission is extremely sensitive to even minute optically active exciton populations making it possible to extract a phase diagram for incoherent excitonic populations.

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S. Chatterjee, C. Ell, S. Mosor, G. Khitrova, H. M. Gibbs, W. Hoyer, M. Kira, S. W. Koch, J. P. Prineas, H. Stolz. 2003-09-05. Excitonic Photoluminescence in Semiconductor Quantum Wells: Plasma versus Excitons. https://doi.org/10.1103/physrevlett.92.067402

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