Patent ID: 6387799
Filing Date: 2002-05-14
Classification: H01L

Abstract:
A method for fabricating a titanium silicide film comprising the steps of:(a) forming a conductive layer on a semiconductor; (b) forming an insulating layer on the conductive layer; (c) selectively etching the insulating layer exposing a portion of the conductive layer, forming a contact hole; (d) forming a first titanium silicide film on the insulating layer, and on an inner wall surface and on a bottom surface of the contact hole using a Chemical Vapor Deposition method, wherein the first titanium silicide film is as thick as 1/n of a total desired thickness; (e) processing the first titanium silicide film with nitrogen-gas plasma or ammonia-gas plasma, forming a nitride film on the surface of the first titanium silicide film; and (f) repeatedly performing step (d) and (e) for n times, wherein n is at least one and wherein each nitride film is removed when a respective titanium silicide film is deposited on the nitride film.