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Study of Ge Out-diffusion During Nickel (Platinum ∼ 0, 5, 10 at.%) Germanosilicide Formation

Published online by Cambridge University Press:  17 March 2011

L. J. Jin ,
K. L. Pey ,
W. K. Choi ,
E. A. Fitzgerald ,
D. A. Antoniadis ,
A. J. Pitera ,
M. L. Lee  and
D. Z. Chi
L. J. Jin
Affiliation:
Singapore-MIT Alliance, 4 Engineering Drive 3, Singapore, 117576
K. L. Pey
Affiliation:
Singapore-MIT Alliance, 4 Engineering Drive 3, Singapore, 117576 School of Electrical & Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore, 639798
W. K. Choi
Affiliation:
Singapore-MIT Alliance, 4 Engineering Drive 3, Singapore, 117576 Department of Electrical & Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576
E. A. Fitzgerald
Affiliation:
Singapore-MIT Alliance, 4 Engineering Drive 3, Singapore, 117576 Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139- 66307
D. A. Antoniadis
Affiliation:
Singapore-MIT Alliance, 4 Engineering Drive 3, Singapore, 117576 Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139- 66307
A. J. Pitera
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139- 66307
M. L. Lee
Affiliation:
Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139- 66307
D. Z. Chi
Affiliation:
Institute of Materials Science and Engineering, 3 Research Link, Singapore, 117602
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Abstract

The interfacial reaction between 10 nm Ni(Pt ∼0, 5, 10 at.%) and (100) Si0.75Ge0.25 substrate after rapid thermal annealing between 400 and 800°C has been studied in detail using Micro- Raman spectroscopy. Only monogermanosilicide phase was detected in the temperature range investigated. The evolution of a broad Ni(Pt)SiGe Raman peak into two distinct peaks with increasing annealing temperature is attributed to a Ge out-diffusion from the germanosilicide grains. In addition, Raman spectroscopy further proves that depletion of Ge concentration in the Ni(Pt)SiGe grains reduces at higher temperature by the addition of Pt. The above phenomena were further supported by X-ray diffraction method.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 810: Symposium C – Silicon Front-End Junction Formation-Physics and Technology , 2004 , C4.3
Copyright
Copyright © Materials Research Society 2004

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References

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