Excited state dynamics in In0.5Al0.04Ga0.46As/Al0.08Ga0.92As self-assembled quantum dots

L.M. Smith, Kristjan Leosson, John Erland Østergaard, Jacob Riis Jensen, Jørn Märcher Hvam, V. Zwiller

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We use time-resolved photoluminescence spectroscopy to probe the relaxation of excited states in In0.5Al0.04Ga0.40As/Al0.08Ga0.92As self-assembled quantum dots. The relaxation rate of excitons confined to the quantum dots increases by nearly an order of magnitude as the energy of the states approaches the top of the quantum dot potential. This dramatic change in the dynamics of these states reflects the increasing complexity of the states localized near the top of the quantum dots.
Original languageEnglish
JournalPhysica Status Solidi B
Volume224
Issue number2
Pages (from-to)447-451
ISSN0370-1972
Publication statusPublished - 2001

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