Observation of lattice waves through observation of the photoluminescence Blinking in InGaN Quantum Well devices

Details Observation of lattice waves through observation of the photoluminescence Blinking in InGaN Quantum Well devices Observation of lattice waves through observation of the photoluminescence Blinking in InGaN Quantum Well devices

2012-02-24

arxiv.org/abs/1202.5368v1

Physics

Optics

4 pages, 4 figures

Scientific paper

The photoluminescence of III-V wide band-gap semiconductors as InGaN is characterized by local intensity fluctuations, known as 'blinking points', that despite decades of research are not yet completely understood. In this letter we report experimental data and a theoretical interpretation that suggests they are caused by the interference of thermal vibrations of the Quantum Well lattice. With far-field optical tests we could observe the lower frequency tail of these interference waves and study their dynamics as they propagate up to distances of several tens of microns.

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