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.
@article{arxiv.cond-mat/0503386,
title = {Exciton-optical-phonon coupling: comparison with experiments for ZnO quantum wells},
author = {T. Makino and Y. Segawa and M. Kawasaki},
journal= {arXiv preprint arXiv:cond-mat/0503386},
year = {2015}
}
Comments
5 pages, 2 figures, 1 table, accepted for publication in JAP