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Optical properties of Si nanocrystals prepared by magnetron sputtering

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8 Author(s)
Baru, V.G. ; Institute of Radioengineering and Electronics, Russian Academy of Sciences, Fryazino 141120, Russia ; Chernushich, A.P. ; Luzanov, V.A. ; Stepanov, G.V.
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Visible photoluminescence (PL), optical transmission, and Raman scattering spectra of Si nanocrystals embedded in SiO2 matrix have been studied. Films were deposited by rf magnetron sputtering of compound SiO2/Si targets. Films containing silicon in the form of nanocrystals clusters show intense luminescence at room temperature. Films containing only amorphous Si clusters show little or no PL. Annealing in vacuum or in specific atmosphere leads to strong change of the PL spectrum and its intensity. Results are explained by strong influence of the Si/SiO2 interface state on integral PL emission. © 1996 American Institute of Physics.

Published in:

Applied Physics Letters  (Volume:69 ,  Issue: 27 )

Date of Publication:

Dec 1996

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