Patent ID: 6051281
Filing Date: 2000-04-18
Classification: C23C,H01L

Abstract:
A method of forming a titanium film and a barrier film on a surface of a substrate by lamination, said method comprising the steps of:forming said titanium film on the surface of the substrate using a first process gas containing therein TiCl.sub.4 ;subjecting said substrate having said titanium film formed thereon to a plasma process using a second process gas consisting essentially of both nitrogen gas and hydrogen gas, thereby nitriding a surface layer of said titanium film to form thereon a nitride layer and reducing TiCl.sub.4 remaining in said titanium film by the hydrogen gas to remove Cl from said titanium film; andforming said barrier film on said titanium film having said nitride layer formed thereon,wherein the ratio of the nitrogen gas to the hydrogen gas in said second process gas is 1:3.