Patent ID: 7972945

Claim:
A parallel flat-plate plasma doping apparatus comprising: a vacuum container; a sample electrode that is placed in the vacuum container, and has a substrate-placing area on which a substrate is placed; a high-frequency power supply for applying high-frequency power to the sample electrode; an exhaust device for evacuating the vacuum container; a gas supply device for supplying a gas containing an impurity into the vacuum container; and a plasma generation mechanism for exciting the gas to generate a plasma, the plasma doping apparatus further comprising: a top plate disposed on an upper portion of the vacuum container so as to face the substrate-placing area of the sample electrode and provided with an impurity-containing film that contains the impurity, with the film being not located in a top plate center portion area and being located only in a top plate peripheral edge portion area located at a peripheral edge of the top plate center portion area, on a face exposable to the plasma generated in the vacuum container and with the top plate center portion area facing a center portion of the substrate-placing area of the sample electrode.