Patent ID: 8673790
Filing Date: 2014-03-18
Classification: C23C,H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising: supplying a process gas into a process vessel accommodating a substrate to form a thin film on the substrate; and supplying a cleaning gas into the process vessel during a cleaning process to clean an inside of the process vessel, after supplying the process gas to form the thin film is performed a predetermined number of times; wherein, in at least one time period during the cleaning process, all of a fluorine-containing gas, an oxygen-containing gas and a hydrogen-containing gas are simultaneously supplied as the cleaning gas into the process vessel heated and kept at a pressure less than an atmospheric pressure to remove a deposit including the thin film adhering to the inside of the process vessel through a thermochemical reaction, all of the fluorine-containing gas, the oxygen-containing gas and the hydrogen-containing gas being thermally activated under a non-plasma atmosphere.