Patent ID: 8357615

Claim:
A method for manufacturing a semiconductor device in a process vessel by using a substrate having a low dielectric constant film with a resist pattern formed in an upper layer of the low dielectric constant film, the method comprising: placing the substrate on a stage in the process vessel; supplying an etching gas into the process vessel, and making the etching gas into plasma so as to etch the low dielectric constant film by the plasma; supplying an ashing gas into the process vessel, and making the ashing gas into plasma so as to ash the resist pattern by the plasma, the plasma made by the etching gas and the plasma made by the ashing gas causing formation of a damage layer on the low dielectric constant film; and while the substrate is in a heated condition, supplying a dipivaloylmethane gas into the process vessel, and bringing the dipivaloylmethane gas into contact with a surface of the damage layer to cause the dipivaloylmethane gas to release protons which connect to OH groups in the damage layer to generate H 2 O, and go out of the damage layer so as to conduct a recover process for recovering the damage layer at its surface and inside thereof.