Patent ID: 8906708

Claim:
A method for checking an ion implantation condition when ions are implanted over an entirety of one surface of a semiconductor wafer having an insulator film on the one surface, the method comprising: checking whether the ions are implanted over the entirety of the one surface of the semiconductor wafer by observing light emitted when the one surface of the semiconductor wafer is irradiated with an ion beam of the implanted ions throughout the ion implantation by any one of: (i) directly observing the emitted light using a batch-type ion implantation apparatus used to implant the ions in such a manner that the surface of the semiconductor wafer is observed through an observation window provided on a chamber of the batch-type ion implantation apparatus while the surface is irradiated with the ion beam, and the observation of the surface of the semiconductor wafer through the observation window is performed at a position angularly spaced at an angle of 90° to 270° from an irradiation position of the ion beam with respect to a center of a wheel on which the semiconductor wafer is placed; (ii) indirectly observing the emitted light with an illuminometer provided in a chamber for implanting the ions; or (iii) indirectly observing the emitted light with an illuminometer provided at a position at which the emitted light can be observed through an observation window provided on a chamber for implanting the ions.