Patent ID: 6984595
Filing Date: 2006-01-10
Classification: C23C,H01L

Abstract:
1. A vapor reaction method comprising the steps of: providing a pair of first and second electrodes within a reaction chamber, said pair of electrodes being arranged substantially in parallel with each other; placing a substrate in the reaction chamber wherein said substrate is held by said first electrode so that a first surface of said substrate faces toward said second electrode; introducing a first film forming gas into said reaction chamber through said second electrode; exciting said first film forming gas in order to form a first insulating film by first vapor deposition on said substrate placed in said reaction chamber wherein said first insulating film comprises silicon nitride; introducing a second film forming gas into said reaction chamber through said second electrode; exciting said second film forming gas in order to form a second insulating film by a second vapor deposition directly on said first insulating film in said reaction chamber wherein said first and second insulating films contact each other; removing said substrate from said reaction chamber after the formation of the first and second insulating films; introducing a cleaning gas comprising nitrogen fluoride into said reaction chamber through said second electrode; exciting said cleaning gas in order to remove unnecessary layers caused the first and second vapor depositions from an inside of the reaction chamber, wherein the second insulating film comprises a different material from the first insulating film.