Exciton-optical-phonon coupling: comparison with experiments for ZnO quantum wells
arXiv:cond-mat/0503386 · doi:10.1063/1.1900294
Abstract
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.
5 pages, 2 figures, 1 table, accepted for publication in JAP