Luminescence decay dynamics of germanium nanocrystals in silicon

Details Luminescence decay dynamics of germanium nanocrystals in silicon Luminescence decay dynamics of germanium nanocrystals in silicon

2010-12-02

arxiv.org/abs/1012.0398v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, submitted to Appl. Phys. Lett

Scientific paper

The dynamics of the luminescence decay from germanium nanocrystals embedded in crystalline silicon has been studied for temperatures varied between 16 K and room temperature. At room temperature the characteristic decay time is of the order of 50 nanoseconds while it extends into the microsecond range at low temperatures. The decay is dominated by non-radiative processes, which show a typical thermal activation energy of a few meV.

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