Patent ID: 6368949
Filing Date: 2002-04-09
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, the method comprising the steps ofproviding a semiconductor substrate having a surface; forming a gate electrode on a portion of the semiconductor substrate surface, said gate electrode comprising first and second opposing side surfaces and a top surface; forming a blanket layer of an insulative material over the exposed portions of said semiconductor substrate surface and on said first and second opposing side surfaces and said top surface of said gate electrode; selectively removing, by anisotropically etching, (1) said blanket layer of insulative material from said semiconductor substrate surface, and (2) said blanket layer of insulative material from said top surface of said gate electrode, thereby forming an insulative sidewall spacer on each of said first and second opposing side surfaces of said gate electrode and exposing portions of said substrate surface adjacent said sidewall spacers; creating a sacrificial oxide at the semiconductor substrate surface, the sacrificial oxide containing residue on the semiconductor substrate surface resulting from the anisotropically etching of the blanket layer; and removing the sacrificial oxide from the semiconductor substrate surface to thereby remove the residue.