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Photoluminescence and radiative lifetime of trions in GaAs quantum wells

Esser, Axel, Runge, Erich, Zimmermann, Roland and Langbein, Wolfgang Werner 2000. Photoluminescence and radiative lifetime of trions in GaAs quantum wells. Physical Review B 62 (12) , pp. 8232-8239. 10.1103/PhysRevB.62.8232

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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).

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: American Physical Society
ISSN: 0163-1829
Last Modified: 04 Jun 2017 08:00

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