Patent ID: 7709276

Claim:
A method of manufacturing a semiconductor device, comprising: carrying a substrate into a processing chamber; supplying a material gas into the processing chamber to form a film containing ruthenium on the substrate, wherein ruthenium-containing deposits are formed on an inside of the processing chamber; carrying the film-formed substrate out of the processing chamber; and cleaning the inside of the processing chamber, the step of cleaning comprising: supplying a cleaning gas whose molecule has a fluorine atom or a chlorine atom into the processing chamber for removing some of the ruthenium-containing deposits, wherein a by-product is generated so as to cover a surface of the remaining ruthenium-containing deposits; vacuum-evacuating the inside of the processing chamber for removing the by-product and uncovering the surface of the remaining ruthenium-containing deposits, wherein the steps of supplying and vacuum-evacuating alternate plural times, and the cleaning gas is not supplied during the step of vacuum-evacuating.