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The Effect of Aging on Tungsten Filament Surface Kinetics in Hot-Wire Chemical Vapor Deposition of Silicon

Published online by Cambridge University Press:  01 February 2011

Jason K. Holt ,
Maribeth Swiatek ,
David G. Goodwin ,
Harry A. Atwater  and
Thomas J. Watson
Jason K. Holt
Affiliation:
Laboratories of Applied Physics California Institute of Technology Pasadena, CA 91125
Maribeth Swiatek
Affiliation:
Laboratories of Applied Physics California Institute of Technology Pasadena, CA 91125
David G. Goodwin
Affiliation:
Laboratories of Applied Physics California Institute of Technology Pasadena, CA 91125
Harry A. Atwater
Affiliation:
Laboratories of Applied Physics California Institute of Technology Pasadena, CA 91125
Thomas J. Watson
Affiliation:
Laboratories of Applied Physics California Institute of Technology Pasadena, CA 91125
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Abstract

Wire-desorbed radicals present during hot-wire chemical vapor deposition growth have been measured by quadrupole mass spectrometry. For wire temperatures in excess of 1500 K, Si is the predominant radical desorbed from a new wire, with a minor contribution from SiH3. Aged wires showed profoundly different radical desorption kinetics, consistent with evaporation of Si from liquid silicon. It is proposed that this aging is related to silicide formation at the surface of the wire.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 715: Symposium A – Amorphous and Heterogeneous Silicon-Based Films-2002 , 2002 , A23.3
Copyright
Copyright © Materials Research Society 2002

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References

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