Patent ID: 7674647

Claim:
A method for manufacturing a photoelectric conversion device comprising: attaching a single crystal semiconductor substrate to a supporting substrate having an insulating surface with a bonding layer interposed therebetween, wherein the single crystal semiconductor substrate includes a semiconductor layer containing first impurity which imparts one conductivity type, an electrode which is in contact with the semiconductor layer containing first impurity, and a damaged layer which is formed in the single crystal semiconductor substrate by introducing an ion beam through one surface of the single crystal semiconductor substrate, and wherein the supporting substrate is provided on a side of the electrode; performing heat treatment on the single crystal semiconductor substrate to cleave the damaged layer, so that a single crystal semiconductor layer is separated from the single crystal semiconductor substrate, wherein the single crystal semiconductor layer remains over the supporting substrate and on the semiconductor layer containing first impurity; 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; and forming a semiconductor layer containing second impurity having an opposite conductivity type to the one conductivity type on a cleavage plane side of the single crystal semiconductor layer.