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Cobalt Silicide Formation on Polysilicon: Dopant Effects on Reaction Kinetics and Silicide Properties

Published online by Cambridge University Press:  21 February 2011

A.R. Sitaram  and
S.P. Murarka
A.R. Sitaram
Affiliation:
now with APRDL, Motorola Inc., 3501, Ed Bluestein Boulevard, Austin, TX 78721.
S.P. Murarka
Affiliation:
Materials Engineering Department/CIE, Rensselaer Polytechnic Institute, Troy, NY 12180.
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Abstract

The concept of using cobalt disilicide as a self-aligned metallization scheme for gate/interconnection and contact formation is gaining wide acceptance. The silicide formation on the gate will require a Co-metal film interaction with the underlying polysilicon that may be doped heavily. We have investigated the silicide formation kinetics during this reaction. The effect of different dopants (B,P, and As) and their concentration on the Co-Si interaction and the dopant redistribution during such reactions were investigated. The results from these studies will be presented and discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 182: Symposium C – Polysilicon Thin Films and Interfaces , 1990 , 83
Copyright
Copyright © Materials Research Society 1990

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