Patent ID: 8652973

Claim:
A processing method for forming a structure including an amorphous carbon film by use of a hydrocarbon gas, the method comprising: placing a target substrate inside a reaction chamber, the target substrate including an underlying layer on which the structure is to be formed; then performing a preliminary treatment on a surface of the underlying layer by use of a silicon source gas serving as a preliminary treatment gas, the preliminary treatment supplying the preliminary treatment gas into the reaction chamber without supplying the hydrocarbon gas into the reaction chamber while exhausting gas from inside the reaction chamber and setting the inside of the reaction chamber at a preliminary treatment temperature to activate the preliminary treatment gas only by heating at the preliminary treatment temperature; and then performing main CVD (chemical vapor deposition) of forming an amorphous carbon film on the underlying layer, the main CVD supplying the hydrocarbon gas into the reaction chamber without supplying the preliminary treatment gas into the reaction chamber while exhausting gas from inside the reaction chamber and setting the inside of the reaction chamber at a main process temperature to activate the hydrocarbon gas only by heating at the main process temperature.