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Alternative Catalysts For Si-Technology Compatible Growth Of Si Nanowires

Published online by Cambridge University Press:  01 February 2011

Francesca Iacopi ,
Philippe M Vereecken ,
Marc Schaekers ,
Matty Caymax ,
Nele Moelans ,
Bart Blanpain ,
Christophe Detavernier ,
Jan D'Haen  and
Hefin Griffiths
Francesca Iacopi
Affiliation:
[email protected], IMEC, SPDT, Kapeldreef 75, Leuven, 3001, Belgium
Philippe M Vereecken
Affiliation:
[email protected], IMEC, SPDT, Kapeldreef 75, Leuven, 3001, Belgium
Marc Schaekers
Affiliation:
[email protected], IMEC, SPDT, Kapeldreef 75, Leuven, 3001, Belgium
Matty Caymax
Affiliation:
[email protected], IMEC, SPDT, Kapeldreef 75, Leuven, 3001, Belgium
Nele Moelans
Affiliation:
[email protected], Katholieke Universiteit Leuven, Metallurgy and Materials Engineering, Leuven, 3001, Belgium
Bart Blanpain
Affiliation:
[email protected], Katholieke Universiteit Leuven, Metallurgy and Materials Engineering, Leuven, 3001, Belgium
Christophe Detavernier
Affiliation:
[email protected], Universiteit Gent, Solid State Physics, Gent, 9000, Belgium
Jan D'Haen
Affiliation:
[email protected], IMOMEC, Hasselt, 3590, Belgium
Hefin Griffiths
Affiliation:
[email protected], Oxford Instruments, Plasma Technology, Bristol, BS49 4AP, United Kingdom
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Abstract

The use of Au nanoparticles as catalysts for growth of Si nanowires poses fundamental reliability concerns for applications in Si semiconductor technology. In this work we show that the choice of catalysts can be broadened when the need for catalytic precursor dissociation is eliminated. However, the requirements for selective deposition in a gas phase transport -limited regime become stringent. When competing deposition of amorphous Si can bury the particles faster than the incubation time for VLS growth, no nanowire growth will be initiated. We show that the use of a catalyst such as In, already in a liquid form at the growth temperature, is effective. Therefore, the choice of VLS catalysts among the low melting point metals from the III, IV and V groups is suggested.

Keywords

Siplasma-enhanced CVD (PECVD) (deposition)crystal growth
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1017 , 2007 , 1017-DD01-10-EE01-10
Copyright
Copyright © Materials Research Society 2007

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