Patent ID: 7871849

Claim:
A method for manufacturing a photoelectric conversion device comprising: forming a first semiconductor layer over a single crystal semiconductor substrate, the first semiconductor layer containing a first impurity which imparts one conductivity type; forming a damaged layer in the single crystal semiconductor substrate by introducing an ion beam through one surface of the single crystal semiconductor substrate; attaching the single crystal semiconductor substrate to a supporting substrate having an insulating surface with a bonding layer interposed therebetween; performing heat treatment on the single crystal semiconductor substrate to cleave the damaged layer and separate a single crystal semiconductor layer from the single crystal semiconductor substrate; irradiating a cleavage plane of the single crystal semiconductor layer with a pulsed laser beam in an atmosphere containing an inert gas and oxygen to provide roughness for a surface of the single crystal semiconductor layer; forming a second semiconductor layer containing a second impurity having an opposite conductivity type to the one conductivity type on a cleavage plane side of the single crystal semiconductor layer; and forming a reflecting film over the second semiconductor layer, after forming the second semiconductor layer.