Patent ID: 7858495
Filing Date: 2010-12-28
Classification: H01L

Abstract:
1. A method for manufacturing an SOI substrate, comprising: forming an insulating film including halogen on a surface of a single crystal semiconductor substrate by performing a thermal oxidation treatment in an atmosphere including halogen; forming an embrittlement layer in the single crystal semiconductor substrate by irradiating the single crystal semiconductor substrate with ions through the insulating film including halogen; performing a plasma treatment on the insulating film including halogen by applying a bias voltage to the insulating film including halogen; bonding the insulating film including halogen and a face of a semiconductor substrate with each other; splitting the single crystal semiconductor substrate along the embrittlement layer, whereby a single crystal semiconductor layer is bonded to the semiconductor substrate; and performing a planarization treatment on the single crystal semiconductor layer bonded to the semiconductor substrate.