Patent ID: 8598047

Claim:
A producing method of a semiconductor device, comprising: transferring a plurality of substrates into a processing chamber that includes: a connection portion where a first gas supply tube and a second gas supply tube merge with each other, a gas supply member which is connected downstream of the connection portion, said downstream direction being defined along the flow of gas into the processing chamber, the gas supply member including a plurality of gas supply holes, and a substrate holding section configured to hold a plurality of substrates; adjusting a temperature of the connection portion to a temperature at which a second gas is not decomposed, and adjusting a temperature of a portion of the gas supply member at least including the plurality of gas supply holes, to a temperature at which the second gas is decomposed; and after adjusting said temperatures, supplying gas by repeating the following steps of (a) supplying a first gas and (b) supplying a second gas, said step (a) being a step of supplying a first gas into the processing chamber from a first gas supply source through the first gas supply tube, the connection portion, and the gas supply member, and said step (b) being a step of supplying a second gas into the processing chamber from a second gas supply source through the second gas supply tube, the connection portion, and the gas supply member, to deposit a product stemming from a reaction between the first gas and the second gas on surfaces of the substrates and on an inner wall of the gas supply member.