Patent ID: 6120599
Filing Date: 2000-09-19
Classification: C30B

Abstract:
A method for producing a silicon single crystal wafer, wherein a silicon single crystal is grown in accordance with the Czochralski method in a region located between a boundary between a V-rich region and an N region and a boundary between the N region and an I-rich region in a defect distribution chart which shows a defect distribution in which the horizontal axis represents a radial distance D (mm) from the center of the crystal and the vertical axis represent a value of F/G (mm.sup.2 /.degree. C..multidot.min), where F is a pulling rate (mm/min) of the single crystal, and G is an average intra-crystal temperature gradient (.degree. C./mm) along a pulling direction within a temperature range of the melting point of silicon to 1400.degree. C.