SUBSTRATE PROCESSING APPARATUS AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE

A process chamber is provided into which a substrate is carried, wherein a chlorine atom-containing metal nitride film, in which a natural oxide film is formed on a top side thereof, is formed on the substrate; a substrate support unit configured to support and heat the substrate within the process chamber; a gas supply unit configured to supply either or both of nitrogen atom-containing gas and hydrogen atom-containing gas to an inside of the process chamber; a gas exhaust unit configured to exhaust the gas from the inside of the process chamber; a plasma generation unit configured to excite the nitrogen atom-containing gas and the hydrogen atom-containing gas supplied to the inside of the process chamber; and a control unit configured to control the substrate support unit, the gas supply unit, and the plasma generation unit.