Luminescence decay dynamics of self-assembled germanium islands in silicon

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    The dynamics of the luminescence decay from self-assembled germanium islands embedded in crystalline silicon has been studied for temperatures varied between 16 K and room temperature. We separate the time scale for various dynamical processes by time-resolved emission spectroscopy and identify a characteristic time scale of Auger recombination processes around 10 ns largely independent on temperature, while two slower decay components appear on time scales around 1 μs and 10 μs, respectively, at low temperatures.
    Original languageEnglish
    JournalApplied Physics Letters
    Pages (from-to)093101
    Number of pages3
    Publication statusPublished - 2011


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