Binding energy and lifetime of excitons in InxGa1-xAs/GaAs quantum wells

Orani, D., Polimeni, A., Patane, A., Capizzi, M., Martelli, F., D'Andrea, A., Tomassini, N., Borri, Paola ORCID: https://orcid.org/0000-0002-7873-3314, Gurioli, M. and Colocci, M. 1997. Binding energy and lifetime of excitons in InxGa1-xAs/GaAs quantum wells. Physica Status Solidi (a) 164 (1) , pp. 107-110. 10.1002/1521-396x(199711)164:1<107::aid-pssa107>3.0.co;2-8

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Abstract

We report a systematic study of exciton binding energies and lifetimes in InGaAs/GaAs quantum wells. The experimental binding energies have been deduced from photoluminescence excitation measurements taking into account the contribution of the 2s state of the exciton and the line broadening. The experimental results have been compared with accurate calculations in a four-band model, where exciton energies take into account the polaron correction. The theory accounts for all the experimental observations and provides a good quantitative agreement with the experimental values.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	Wiley
ISSN:	0031-8965
Last Modified:	25 Oct 2022 09:42
URI:	https://orca.cardiff.ac.uk/id/eprint/59717

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