Patent ID: 7964429

Claim:
A method for manufacturing a photoelectric conversion device comprising the steps of: forming a damaged layer in a single crystal semiconductor substrate by irradiating a first surface of the single crystal semiconductor substrate with an ion beam; forming a first impurity semiconductor layer on and in contact with the first surface, wherein the first impurity semiconductor layer has one conductivity type; forming a first electrode on and in contact with the first impurity semiconductor layer; forming a bonding layer over the first electrode; attaching a supporting substrate to the bonding layer; separating a part of the single crystal semiconductor substrate using the damaged layer as a boundary, wherein the part of the single crystal semiconductor substrate is not separated from the supporting substrate; forming a second impurity semiconductor layer on a second surface of the part of the single crystal semiconductor substrate; and irradiating the second impurity semiconductor layer with a laser beam so that a surface of the second impurity semiconductor layer is planarized and a silicide is formed at an interface between the first electrode and the first impurity semiconductor layer, wherein the second impurity semiconductor layer has another conductivity type.