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
    DOIs
    Publication statusPublished - 2001

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