Patent ID: 7855127
Filing Date: 2010-12-21
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor substrate comprising the steps of: (A) epitaxially growing a silicon germanium (SiGe) film on a silicon (Si) substrate by a chemical vapor deposition method; (B) subjecting a heat treatment to the SiGe film at a temperature of not less than 700° C. and not more than 1200° C.; (C) implanting hydrogen ions into a surface of the SiGe film; (D) subjecting a surface activation treatment to a main surface of at least one of the SiGe film and a support substrate; (E) bonding main surfaces of the SiGe film and the support substrate at a temperature of not less than 100° C. and not more than 400° C.; and (F) applying an external impact to a bonding interface between the SiGe film and the support substrate to delaminate the SiGe crystal along a hydrogen ion implanted interface of the SiGe film, thereby forming a SiGe thin film on the main surface of the support substrate.