Patent ID: 6110814
Filing Date: 2000-08-29
Classification: C23C,H01L

Abstract:
A film forming method comprising the steps of:forming on a substrate, a phosphorus-containing insulating film which contains P.sub.2 O.sub.3 by using a film forming gas in which an oxidizing gas is added into a gas mixture including silicon-containing compound and phosphorus-containing compound which has III valence phosphorus and oxygen bonded to at least one bond of said III valence phosphorus, or by using said film forming gas from which said oxidizing gas is removed;heating said phosphorus-containing insulating film while applying acceleration to said phosphorus-containing insulating film to fluidize said phosphorus-containing insulating film and thus planarize a surface of said phosphorus-containing insulating film while said phosphorus-containing insulating film has a predetermined viscosity; andheating further said phosphorus-containing insulating film after the surface of said phosphorus-containing insulating film has been planarized, to sublimate P.sub.2 O.sub.3 in said phosphorus-containing insulating film and thus solidify said phosphorus-containing insulating film.