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Preparation of Quantum-Size Semiconductor-Doped Ormosils and their Optical Properties

Published online by Cambridge University Press:  15 February 2011

Chia-Yen Li ,
Matthew Wilson ,
Nancy Haegel ,
John. D. Mackenzie ,
Edward T. Knobbe ,
Cindy Porter  and
Roger Reeves
Chia-Yen Li
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles
Matthew Wilson
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles
Nancy Haegel
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles
John. D. Mackenzie
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles
Edward T. Knobbe
Affiliation:
University Center for Laser Research, Oklahoma State University
Cindy Porter
Affiliation:
University Center for Laser Research, Oklahoma State University
Roger Reeves
Affiliation:
University Center for Laser Research, Oklahoma State University
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Abstract

An Organically-modified silicate (Ormosil) which contains 28 wt% polydimethylsiloxane and 72 wt% silica has been used as a matrix to fabricate CdS-doped glassy nanocomposites by using the sol-gel method. Samples were prepared both in bulk and film forms. High semiconductor concentrations, up to 20 wt% CdS could be obtained and the semiconductor microcrystallites were formed at temperatures much lower than that of the purely inorganic glass matrix. Preparation methods of these CdS-doped Ormosils are described. Optical behaviors of these nanocomposites under normal and intense photon influx were studied.

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References

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