Patent ID: 9330986
Filing Date: 2016-05-03
CPC Classification: H01L,Y02E,Y02P

Claim Text:
1. A manufacturing method for a solar cell comprising: a first process of forming a texture structure on both surfaces of a semiconductor substrate of a first conductivity type; a second process of measuring a reflectance distribution of the both surfaces of the semiconductor substrate on which the texture structure is formed; a third process of forming an impurity diffusion layer, in which an impurity element of a second conductivity type is diffused, on one of the both surfaces of the semiconductor substrate which is narrower in the reflectance distribution; a fourth process of forming, on the impurity diffusion layer, a light receiving surface-side electrode having a predetermined pattern and electrically connected to the impurity diffusion layer; and a fifth process of forming a back surface-side electrode on another of the both surfaces of the semiconductor substrate which is wider in the reflectance distribution, wherein the fourth process comprises: identifying a first defective appearance region that is attributed to a formation state of the texture structure on a side of the one surface of the semiconductor substrate, the first defective appearance region having a shape; determining an orientation of the light receiving surface-side electrode from among a plurality of potential orientations in which the light receiving surface-side electrode is potentially arranged, the orientation being one in which the light receiving surface-side electrode will have a larger area of overlap with the shape of the first defective appearance region than others of the plurality of potential orientations, which would have a smaller area of overlap with the shape, so that the pattern of the light receiving surface-side electrode is obtained; and forming the light receiving surface-side electrode on the side of the one surface of the semiconductor substrate according to the orientation.