Patent ID: 8790463

Claim:
A method of producing a semiconductor device, using a hot wall substrate processing apparatus with chemical vapor deposition, the substrate processing apparatus comprising: a processing chamber accommodating therein at least one product substrate and at least one dummy substrate; a heating member disposed outside of the processing chamber and which heats the product substrate processing chamber; a processing gas supply system connected to the processing chamber; and an exhaust system, the method comprising: loading a boat charged with only the at least one dummy substrate into the processing chamber; forming one of a Poly-Si film on each of the at least one dummy substrate by supplying a processing gas into the processing chamber without the at least one product substrate loaded therein; unloading the boat from the processing chamber; alternately stacking the at least one product substrate and the at least one dummy substrate in the boat such that the Poly-Si film is exposed directly above the at least one product substrate; loading the boat charged with the at least one product substrate and the at least one dummy substrate into the processing chamber; heating the processing chamber to a desired temperature; and supplying at least a silicon-containing gas and a hydrogen gas into the processing chamber to selectively epitaxially grow a silicon film on a surface of each of the at least one product substrate while maintaining an inner pressure of the processing chamber equal to or higher than 20 Pa, wherein a material generated by a decomposition of the silicon-containing gas before the silicon-containing gas reaches the at least one product substrate is adsorbed by the Poly-Si film.