Patent ID: 9011601
Filing Date: 2015-04-21
Classification: C23C,H01L

Abstract:
1. A substrate processing apparatus comprising: a process vessel configured to accommodate a substrate; a heater configured to heat the substrate accommodated in the process vessel; a source gas supply system configured to supply a source gas into the process vessel via a first nozzle; an oxygen-containing gas supply system configured to supply an oxygen-containing gas into the process vessel via a second nozzle different from the first nozzle; a hydrogen-containing gas supply system configured to supply a hydrogen-containing gas into the process vessel via the first nozzle or the second nozzle; a pressure regulation unit configured to regulate an inside pressure of the process vessel; and a controller configured to control the heater, the source gas supply system, the oxygen-containing gas supply system, the hydrogen-containing gas supply system and the pressure regulation unit to perform a cycle with an inside of the process vessel, an inside of the first nozzle and an inside of the second nozzle heated to a film-forming temperature same as a temperature of the substrate to form an oxide film on the substrate, wherein the cycle comprises alternately repeating: (a) forming a layer on the substrate by supplying the source gas into the process vessel accommodating the substrate via the first nozzle; and (b) simultaneously supplying the oxygen-containing gas through the second nozzle and the hydrogen-containing gas through the first nozzle into the process vessel having the inside pressure thereof lower than atmospheric pressure; mixing and reacting the oxygen-containing gas with the hydrogen-containing gas in a non-plasma atmosphere within the process vessel to generate atomic oxygen; and oxidizing the layer with the atomic oxygen to change the layer into an oxide layer.