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Properties of Silicon Nanoparticles Produced by Picosecond Pulsed Laser Ablation

Published online by Cambridge University Press:  17 March 2011

M. H. Wu ,
R. Mu ,
A. Ueda  and
D. O. Henderson
M. H. Wu
Affiliation:
Chemical Physics Laboratory Fisk University Nashville, TN 37208
R. Mu
Affiliation:
Chemical Physics Laboratory Fisk University Nashville, TN 37208
A. Ueda
Affiliation:
Chemical Physics Laboratory Fisk University Nashville, TN 37208
D. O. Henderson
Affiliation:
Chemical Physics Laboratory Fisk University Nashville, TN 37208
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Abstract

Silicon nanocrystals have been fabricated by picosecond pulsed laser ablation. Size control over the nanocrystals can be achieved by careful selection of experimental geometry, laser fluence, laser wavelength, backing gas pressure and distance from plume center. Measurements of optical absorption and photoluminescence confirm that particle size variation does significantly affect bandgap and emission efficiency. Differences between results published previously for nanosecond pulsed laser ablation will also be discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 638: Symposium F – Microcrystaline & Nanocrystalline Semiconductors-2000 , 2000 , F13.2.1
Copyright
Copyright © Materials Research Society 2001

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