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Structural and Electrical Characterization of FeSix – Layers (1≤ X ≤2) Prepared by RTP of Fe Layers Sputtered on Si (100)

Published online by Cambridge University Press:  15 February 2011

M. Líbezný ,
J. Poortmans ,
P. H. Amesz ,
R. A. Donaton ,
K. Kyllesbech Larsen ,
P. Vandenabeele ,
F. Jonckx ,
K. Maex  and
J. Nijs
M. Líbezný
Affiliation:
IMEC, Kapeldreef 75, B-3001 Leuven, Belgium
J. Poortmans
Affiliation:
IMEC, Kapeldreef 75, B-3001 Leuven, Belgium
P. H. Amesz
Affiliation:
Dept. Material Science, Rijksuniv. Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
R. A. Donaton
Affiliation:
IMEC, Kapeldreef 75, B-3001 Leuven, Belgium
K. Kyllesbech Larsen
Affiliation:
IMEC, Kapeldreef 75, B-3001 Leuven, Belgium
P. Vandenabeele
Affiliation:
IMEC, Kapeldreef 75, B-3001 Leuven, Belgium
F. Jonckx
Affiliation:
IMEC, Kapeldreef 75, B-3001 Leuven, Belgium
K. Maex
Affiliation:
IMEC, Kapeldreef 75, B-3001 Leuven, Belgium
J. Nijs
Affiliation:
IMEC, Kapeldreef 75, B-3001 Leuven, Belgium
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Abstract

β-FeSi2 is a semiconductor with a potential for photovoltaic and optoelectronic applications. The preparation of β-FeSi2-layers by rapid thermal processing (RTP) of Fe layers on silicon is investigated in this paper. Fe layers with typical thicknesses of 30 nm were sputtered on Si (100) substrates. We correlated the surface morphology of samples subjected to different RTP treatments with their composition and phase content. Phase transformations during the anneal were also studied by in-situ emissivity measurements. Rectifying and contacting behaviour of silicide/silicon heterojunctions prepared at several RTP-temperatures is presented at the end of this paper. Since it is not possible to prepare β-FeSi2-layers without a presence of either FeSi or α-FeSi2 metallic phases, these structures have poor heterojunction characteristics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 387: Symposium P – Rapid Thermal and Integrated Processing IV , 1995 , 389
Copyright
Copyright © Materials Research Society 1995

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References

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