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Exciton relaxation in Ga1 − xInxAs/GaAs self-organized quantum dots

✍ Scribed by J.X. Shen; Y. Oka; H.H. Cheng; F.Y. Tsai; C.P. Lee

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
84 KB
Volume
25
Category
Article
ISSN
0749-6036

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✦ Synopsis

The exciton dynamics in Ga 1-x In x As/GaAs self-organized quantum dots grown on GaAs (111)B substrates are studied by the time-resolved photoluminescence (PL). We have found the intra-dot exciton relaxation by the reduction of the linewidth and peak energy and also by the energy-dependent PL rise time in the transient PL spectra. Compared with the energy relaxation in the reference quantum wells, we have confirmed that the exciton relaxation in three-dimensionally confined quantum dots is slower than in the quantum wells.

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