Patent ID: 8293592

Claim:
A method of manufacturing a semiconductor device, comprising: (a) loading a substrate into a process chamber, the substrate having at least an exposed silicon surface and an exposed surface of silicon oxide film or silicon nitride film on a substrate surface; (b) simultaneously supplying at least a first process gas containing silicon and a second process gas for etching into the process chamber under a condition that the substrate inside the process chamber is heated to a predetermined temperature; and (c) supplying a third process gas having a etchability higher than that of the second process gas into the process chamber, wherein steps (b) and (c) are performed one or more times so that an epitaxial film is selectively grown on the exposed silicon surface of the substrate surface, and wherein a temperature of the substrate is maintained at the predetermined temperature when proceeding from step (b) to step (c), and the temperature of the substrate is temporarily elevated to be higher than the predetermined temperature in step (c) and then returned to the predetermined temperature in step (c).