METHOD FOR IMPROVING SURFACE ROUGHNESS OF PROCESSED FILM OF SUBSTRATE AND APPARATUS FOR PROCESSING SUBSTRATE

摘要

Disclosed is a method for improving surface roughness of a resist film formed on a wafer. In a coating/developing system, a wafer (W) is regulated to a certain temperature, which wafer with a resist film formed on the surface has been exposed and developed. A solvent vapor is supplied to the surface of the resist film of the wafer (W) which is controlled to the certain temperature for dissolving the resist film surface. The wafer (W) is then heated for volatilizing the solvent in the resist film and densifying the resist film. Consequently, roughness in the surface of the resist film is smoothed, thereby improving surface roughness of the resist film.