Europhys. Lett.
Volume 47, Number 5, September 1999
Page(s) 628 - 632
Section Condensed matter: electronic structure, electrical, magnetic and optical properties
Published online 01 September 2002
DOI: 10.1209/epl/i1999-00435-1

Europhys. Lett, 47 (5), pp. 628-632 (1999)

Dimensional crossover of exciton hopping relaxation in mesoscopic structures

J. E. Golub, R. Eichmann and P. Thomas

Fachbereich Physik und Wissenschaftliches Zentrum für Materialwissenschaften
Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany

(received 4 May 1999; accepted in final form 6 July 1999)

PACS. 78.20Bh - Theory, models, and numerical simulation.
PACS. 78.55${\rm -m}$ - Photoluminescence.
PACS. 78.30Ly - Disordered solids.


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.


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