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Excitonic Photoluminescence in Semiconductor Quantum Wells: Plasma versus Excitons
Journal article   Open access   Peer reviewed

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 and H Stolz
Physical review letters, Vol.92(6), 067402
02/13/2004
DOI: 10.1103/PhysRevLett.92.067402
PMID: 14995274
url
https://arxiv.org/pdf/cond-mat/0309160View
Open Access

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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