Patent ID: 6352943
Filing Date: 2002-03-05
Classification: H01L

Abstract:
A method of film formation comprising: forming a phosphorus-containing insulating film on a substrate; and exposing a surface of said phosphorus-containing insulating film to an atmosphere containing water vapor while heating said surface of said phosphorus-containing insulating film to a temperature of 350 to 550Â° C. to render the surface of said phosphorus-containing film hydrophobic, to increase film-forming rate of a silicon-containing insulating film subsequently formed by thermal chemical vapor deposition on said surface, and to reduce surface roughness of the subsequently formed insulating film; and thenforming the silicon-containing insulating film on said hydrophobic surface of said phosphorus-containing insulating film by thermal chemical vapor deposition using a mixed gas containing a ozone-containing gas and a silicon-containing gas.