Ti and NiPt/Ti liner silicide contacts for advanced technologies

We discuss the transition to Ti based silicides for source-drain (SD) contacts for 3D FinFET devices starting from the 14nm node & beyond. Reductions in n-FET & p-FET contact resistances are reported with the optimization of metallization process & dopant concentrations. The optimization of SiGe epitaxy and addition of a thin interfacial NiPt(10%) are found to significantly improve p-FET contact performance.