Photoluminescence and radiative lifetime of trions in GaAs quantum wells

Axel Esser, Erich Runge, Roland Zimmermann, and Wolfgang Langbein
Phys. Rev. B 62, 8232 – Published 15 September 2000
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Abstract

Electron-trion photoluminescence spectra were measured in undoped high-quality GaAs quantum wells. The obtained line shape depends on temperature and is asymmetric with a tail towards lower photon energies. For a detailed understanding, we have solved numerically the trion Schrödinger equation in the quantum well. Both electron and hole trions are considered. Good agreement is found for the trion binding energy and for the luminescence line shape at different temperatures. The radiative lifetime of thermalized trions is found to increase linearly with temperature. Analytical results are given for both types of trions taking into account the finite photon wave vector (light-cone effect).

  • Received 15 February 2000

DOI:https://doi.org/10.1103/PhysRevB.62.8232

©2000 American Physical Society

Authors & Affiliations

Axel Esser, Erich Runge, and Roland Zimmermann

  • Institut für Physik, Humboldt-Universität zu Berlin, Hausvogteiplatz 5-7, D-10117 Berlin, Germany

Wolfgang Langbein

  • Lehrstuhl für Experimentelle Physik EIIb, Universität Dortmund, Otto-Hahn-Strasse 4, D-44221 Dortmund, Germany

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Issue

Vol. 62, Iss. 12 — 15 September 2000

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