Patent ID: 8411263
Filing Date: 2013-04-02
Classification: G01N,H01L

Abstract:
1. A method of evaluating a silicon wafer, which comprises: obtaining first surface distribution information indicating an surface distribution of photoluminescence intensity on a surface of a silicon wafer being evaluated; after obtaining the first surface distribution information, subjecting the silicon wafer being evaluated to a thermal oxidation treatment, and then obtaining second surface distribution information indicating an surface distribution of photoluminescence intensity on the surface of the silicon wafer being evaluated; obtaining difference information for the first surface distribution information and third surface distribution information, with the third surface distribution information having been obtained by correcting the second surface distribution information with a correction coefficient of less than 1; and based on the difference information obtained, evaluating an evaluation item selected from the group consisting of absence or presence of oxygen precipitates and surface distribution of oxygen precipitates in the silicon wafer being evaluated.