Patent ID: 6177149
Filing Date: 2001-01-23
Classification: C23C,H01L

Abstract:
A method of forming a titanium film by chemical vapor deposition in holes formed in an insulating film provided on a silicon base, said method comprising the steps of:loading a silicon base having thereon an insulating film formed with holes into a film forming chamber;evacuating the chamber at a predetermined vacuum;supplying processing gases including TiCl.sub.4 gas, a reduction gas, Ar gas and SiH.sub.4 gas into the film forming chamber; andproducing a plasma in the film forming chamber to deposit a titanium film in the holes formed in the insulating film, while said silicon base is heated at a temperature of from 550 to 630.degree. C., and while said TiCl.sub.4 gas and said SiH.sub.4 gas are supplied with a flow rate of the SiH.sub.4 gas being from 10 to 50% of a flow rate of the TiCl.sub.4 gas, to thereby obtain a silicon-to-insulating film selectivity of not less than one.