Patent ID: 6287966
Filing Date: 2001-09-11
Classification: H01L

Abstract:
A method of Titanium salicide formation on the substrate using a silicon injection process comprising the steps of:providing a silicon substrate;creating a CMOS device structure on said substrate;vacuum baking said substrate, said vacuum baking being in-situ or ex-situ vacuum baking said substrate at a temperature in a temperature range of about 300 to 350 degrees C. for a time between about 25 and 35 minutes and a pressure between about 0.5 and 1000 mTorr;after said vacuum baking, performing a one step HF dip of said substrate;depositing a layer of titanium over source/drain regions in the surface of said substrate and a polysilicon gate region;implanting impurity ions in the surface of said substrate;performing a first Rapid Thermal Annealing process of said substrate;performing a selective etching of said substrate thereby forming contact areas for the self-aligned source and drain regions in the surface of said substrate; andperforming a second Rapid Thermal Annealing process of said substrate thereby forming a layer of said titanium salicide over said source and drain regions in said substrate.