Patent ID: 9080253
Filing Date: 2015-07-14
Classification: C30B,H01L

Abstract:
1. A method for manufacturing an epitaxial wafer by which an epitaxial layer is formed on a surface of a silicon wafer arranged in a reactor by distributing a raw material gas in the reactor, wherein: a temperature of a susceptor in the period from the time of carrying the silicon wafer into the reactor until the time of transferring the silicon wafer to the susceptor is adjusted in accordance with a resistivity and temperature rise rate of the silicon wafer; when the resistivity of the silicon wafer is 0.005 to 0.020 Ω·cm, a temperature of the susceptor in the period from the time of carrying the silicon wafer into the reactor until the time of transferring the silicon wafer to the susceptor is adjusted to 775±25° C.; and an average number of light point defects having a size of 0.09 μm or greater per silicon wafer is 0.9 or less.