Patent ID: 8679286
Filing Date: 2014-03-25
Classification: B81C,Y10T

Abstract:
1. A catalyst-aided chemical processing apparatus for polishing an SiC wafer comprising: a rotatable platen including a synthetic resin base and a plating or coating film formed on the synthetic resin, the plating or coating film having a processing base surface consisting of a platinum, gold or ceramic solid catalyst; a rotational shaft provided parallel and eccentrically to the axis of rotation of the platen; a holder, provided at a front end of the rotational shaft, for holding the SiC wafer and bringing a surface of the SiC wafer close to or into contact with the processing base surface of the platen while rotating the SiC wafer; and a processing solution supply portion for supplying a processing solution, in which a halogen-containing molecule is dissolved, to between the processing base surface of the platen and the surface of the SiC so that a halogen radical is generated at the processing base surface by dissociating the halogen-containing molecule, wherein the processing solution supply portion includes a vessel for holding the processing solution and immersing the platen in the processing solution, and a supply pipe for supplying the processing solution to the vessel.