Patent ID: 7842584
Filing Date: 2010-11-30
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 from a surface of the single crystal semiconductor substrate by adding an ion species to the single crystal semiconductor substrate; bonding the surface of the single crystal semiconductor substrate 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; generating a crack in the brittle layer and separating the single crystal semiconductor substrate with a portion of the single crystal semiconductor substrate left over the first substrate, to form a first semiconductor film comprising single crystal semiconductor; adding impurities imparting one conductivity type to the first semiconductor film by doping to form a semiconductor region into which the impurities are implanted; and forming a second single crystal semiconductor film which is crystallized by solid-phase epitaxy over the semiconductor region.