Photoluminescence of nanocrystals embedded in oxide matrices
C. Estrada, J. A. Gonzalez, A. Kunold, J. A Reyes-Esqueda, P. Pereyra
Abstract
We used the theory of finite periodic systems to explain the photoluminescence spectra dependence on the average diameter of nanocrystals embedded in oxide matrices. Because of the broad matrix band gap, the photoluminescence response is basically determined by isolated nanocrystals and sequences of a few of them. With this model we were able to reproduce the shape and displacement of the experimentally observed photoluminescence spectra.
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