Volume 47, Number 5, September I 1999
|Page(s)||628 - 632|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Dimensional crossover of exciton hopping relaxation in mesoscopic structures
Fachbereich Physik und Wissenschaftliches Zentrum für Materialwissenschaften Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany
Accepted: 6 July 1999
We compute the time-resolved and steady-state recombination spectra for excitons in disordered semiconductor strips on the basis of hopping theory. Exciton hopping undergoes a dimensional crossover when the hop length is comparable to the strip width. We show by Monte Carlo simulation that the analysis of time-resolved photoluminescence spectra for strips of differing widths provides a measurement of the parameters of the hopping theory and permits a determination of the hopping mechanism.
PACS: 78.20.Bh – Theory, models, and numerical simulation / 78.55.-m – Photoluminescence / 78.30.Ly – Disordered solids
© EDP Sciences, 1999
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