Patent ID: 7329612

Claim:
A semiconductor device manufacturing method comprising the steps of: generating a film-forming gas of (1) one of a silicon-containing organic compound having a siloxane bond and a silicon-containing organic compound having a CH 3 group and (2) H 2 O; setting a flow rate ratio of H 2 O to the silicon-containing organic compound to 4 or more; adjusting pressure of the film-forming gas to 1.5 Torr or more; applying power to the film-forming gas to generate a plasma thereof so as to react it, and thus forming a low-dielectric insulating film on a substrate; generating a process gas containing at least one of He, Ar, H 2 and deuterium; generating a plasma by applying power to the process gas; bringing the low-dielectric insulating film into contact with the plasma of the process gas; and removing a surface layer of the low-dielectric insulating film.