Patent ID: 6767814
Filing Date: 2004-07-27
Classification: H01L

Abstract:
A method for forming a semiconductor device, comprising:forming an isolation layer on a surface of a semiconductor substrate to define an active region therein; forming a gate insulation layer on the active region; forming a gate layer on the gate insulation layer; patterning the gate layer to form a gate electrode and to expose source/drain regions; sputter depositing a cobalt layer in said exposed source/drain regions in a sputtering chamber; forming a Ti/Ti-nitride layer as a capping layer on said cobalt layer by CVD at a process temperature of 300 to 700Â° C. and concurrently forming a low temperature type cobalt silicide thin film; removing non-reacted portions of said cobalt layer from said substrate on which said low temperature type cobalt thin film is formed; and transforming said low temperature type cobalt silicide layer into a high temperature type cobalt thin film by performing a heat treatment at a temperature of greater than 700Â° C.