Nonequilibrium dynamics of free quantum-well excitons in time-resolved photoluminescence

被引：107

作者：

Piermarocchi, C ^{[1
]}

Tassone, F ^{[1
]}

Savona, V ^{[1
]}

Quattropani, A ^{[1
]}

Schwendimann, P ^{[1
]}

机构：

[1] DEF PROCUREMENT & TECHNOL AGCY,SYST ANAL DIV,CH-3003 BERN,SWITZERLAND

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.53.15834

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Scattering rates of quantum-well excitons by acoustic phonons are calculated using realistic deformation potentials for electrons and holes in structures based on GaAs. These fates are used in order to reproduce the exciton dynamics in a time-resolved photoluminescence experiment. Rise time and decay time of the luminescence signal are studied as a function of temperature and quantum-well size. It is found that the exciton distribution function reaches a stationary shape during the radiative recombination and shows strong deviations from the thermal distribution. As a consequence, the decay time is slower. A discussion of the dependence of these effects on the well width is given.

引用

页码：15834 / 15841

页数：8

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