Patent ID: 8420504
Filing Date: 2013-04-16
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising the steps of: forming a brittle layer in a single crystal semiconductor substrate at a predetermined depth by adding an ion species to the single crystal semiconductor substrate; forming a first semiconductor film which is an amorphous semiconductor film including impurities imparting one conductivity type over the single crystal semiconductor substrate; forming an insulating film over the first semiconductor film; bonding a surface of the insulating film to a surface of a first substrate; performing heat treatment in a state in which the single crystal semiconductor substrate and the first substrate overlap with each other; and crystallizing the first semiconductor film by epitaxy to be a single crystal semiconductor film and generating a crack in the brittle layer to separate the single crystal semiconductor substrate with a portion of the single crystal semiconductor substrate left, thereby forming the insulating film, the first semiconductor film which is the single crystal semiconductor film, and a second semiconductor film which is the portion of the single crystal semiconductor substrate over the first substrate.