Patent ID: 6214710
Filing Date: 2001-04-10
Classification: H01L

Abstract:
A method of forming a semiconductor device in the surface of a substrate, the method comprising the steps of:separating a semiconductor gate body from the outer surface of the substrate by a gate insulator layer;forming a conductive drain region in the outer surface of the substrate and spaced apart from the gate body;forming a conductive source region in the outer surface of the substrate and spaced apart from the gate body opposite the conductive drain region to define a channel region in the substrate disposed inwardly from the gate body and the gate insulator layer;depositing a metal buffer layer over the conductive source region and conductive drain region, the metal buffer layer comprising a metal selected from the group consisting of zirconium and hafnium;depositing a metal layer over the metal buffer layer; andreacting the metal layer and metal buffer layer with the conductive source region and conductive drain region to form respective first and second silicide regions.