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Surface Spectroscopic Studies of the Initial Stages of Diamond Growth on Si(100)

Published online by Cambridge University Press:  22 February 2011

Richard B. Jackman
Affiliation:
Electronic and Electrical Engineering, University College, London, Torrington Place, London, WC1E 7JE, UK
Lye Hing Chua
Affiliation:
Electronic and Electrical Engineering, University College, London, Torrington Place, London, WC1E 7JE, UK
John S. Foord
Affiliation:
Physical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, UK
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Abstract

The interaction of hot filament “activated” methane and hydrogen with Si(100) surfaces has been probed in situ for the first time, using Auger electron and thermal desorption spectroscopies. It is shown that hot filament activation of methane results in thechemisorption of acetylene and ethylene on Si (100). Atomic hydrogen drives a range of surface reactions within the adsorbed phases formed. In particular hydrogen abstraction is observed which results in the efficient conversion of ethylene to adsorbed acetylene, and further reactions take place between atomic hydrogen, acetylene and C1 species, resulting in the formation of C3 hydrocarbon species. The implications of this work for diamond film growth are considered, and die results are used to develop a model to describe die growth of sp3 hybridised hydrocarbon chains on the Si surface.

Type
Research Article
Copyright
Copyright © Materials Research Society 1993

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References

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