Patent ID: 9238257
Filing Date: 2016-01-19
CPC Classification: B08B,C23C,H01L

Claim Text:
1. A method of manufacturing a semiconductor device, the method comprising: (a) loading a substrate into a processing chamber; (b) forming a nitride film including a conductive film or an insulating film on the substrate by alternately supplying a plurality of source gases into the processing chamber; (c) unloading the substrate from the processing chamber; (d) changing a composition of the nitride film adhered to the processing chamber formed in the step (b) into an oxide film by oxidizing the nitride film adhered to the processing chamber by supplying an oxygen-containing gas into the processing chamber; and (e) removing the oxide film by supplying a cleaning gas into the processing chamber and exhausting the cleaning gas from the processing chamber after performing a cycle of the steps (a), (b), (c) and (d) a plurality of times, wherein a nitro n concentration of a surface of the nitride film adhered to the processing chamber is decreased and an oxygen concentration of the surface of the nitride film adhered to the processing chamber is increased in the step (d).