Exciton-optical-phonon coupling: comparison with experiments for ZnO quantum wells

Details Exciton-optical-phonon coupling: comparison with experiments for ZnO quantum wells Exciton-optical-phonon coupling: comparison with experiments for ZnO quantum wells

2005-03-16

arxiv.org/abs/cond-mat/0503386v1

J. Appl. Phys. vol. 97, p. 106111 (2005)

Physics

Condensed Matter

Materials Science

5 pages, 2 figures, 1 table, accepted for publication in JAP

Scientific paper

The temperature-dependent linewidths of excitons in ZnO quantum wells were studied by measuring absorption spectra from 5 K to room temperature. We deduced experimentally the exciton-longitudinal-optical (LO) phonon coupling strength, which showed reduction of coupling with decrease in well width. This reduction was explained in terms of confinement-induced enhancement of the excitonic binding energy by comparing the binding energy dependence of calculated coupling strength.

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