Patent ID: 11915939
Assignee: HITACHI HIGH-TECH CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A semiconductor fabricating method that etches a film to be processed containing a transition metal on an upper surface of a semiconductor wafer placed in a processing chamber in a container by supplying a complexing gas for complexing the transition metal into the processing chamber, the semiconductor fabricating method comprising:
a first step including adsorbing the complexing gas to the film, then increasing a temperature of the wafer to form an organic metal complex on a surface of the film, and volatilizing and desorbing the organic metal complex, wherein an entirety of each of the adsorbing the complexing gas to the film, increasing the temperature of the wafer, and volatilizing and desorbing the organic metal complex of the first step is performed while supplying the complexing gas; and
a second step including adsorbing the complexing gas to the surface of the film at a low temperature, while supplying the complexing gas, to form an organic metal complex, then stopping the supply of the complexing gas, and stepwise increasing the temperature of the wafer to volatilize and desorb the organic metal complex formed on the surface of the film.