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Synthesis of Size-Classified Silicon Nanocrystals

Published online by Cambridge University Press:  15 February 2011

Renato P. Camata
Affiliation:
Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA 91125
Harry A. Atwater
Affiliation:
Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA 91125
Kerry J. Vahala
Affiliation:
Thomas J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA 91125
Richard C. Flagan
Affiliation:
Department of Chemical Engineering, California Institute of Technology, Pasadena, CA 91125
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Abstract

We report the synthesis of size-classified silicon nanocrystals by applying differential mobility analysis to an originally polydisperse aerosol of ultrafine silicon crystallites. Using the described technique, the average nanocrystal size can be tuned by simply adjusting an electric field. Samples of uncoagulated silicon nanocrystals have been obtained and size control has been achieved within 15–20% in the 2–10 nm size regime.

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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