Patent ID: 8017429
Filing Date: 2011-09-13
Classification: H01L,Y02E

Abstract:
1. A method for manufacturing a photoelectric conversion device, comprising the steps of: forming an embrittlement layer in a single crystal silicon substrate; forming a first impurity silicon layer having one conductivity type, an electrode, and an insulating layer so as to be stacked sequentially over a surface of the single crystal silicon substrate; disposing a surface of a supporting substrate and a surface of the insulating layer formed over the single crystal silicon substrate so as to be in contact with each other; performing heat treatment to form a first single crystal silicon layer over the supporting substrate by separating part of the single crystal silicon substrate along the embrittlement layer or a periphery of the embrittlement layer; modulating a first laser beam to a second laser beam having light intensity regularly; performing irradiation with the second laser beam on a separation surface of the first single crystal silicon layer to form unevenness on the separation surface of the first single crystal silicon layer; forming a second single crystal silicon layer over the separation surface of the first single crystal silicon layer having the unevenness, thereby unevenness on a surface of the second single crystal silicon layer is formed; and forming a second impurity silicon layer having a conductivity type opposite to the one conductivity type in an upper side of the second single crystal silicon layer having the unevenness.