Crystalline silicon solar cell manufacturing method, solar cell module manufacturing method, crystalline silicon solar cell, and solar cell module

摘要

The present invention provides a method for producing a crystalline silicon solar cell (1) with a high conversion efficiency and having a precisely machined light-incident surface. The method includes a first transparent electrode layer forming step of forming a first transparent electrode layer (6), a back electrode layer forming step of forming a back electrode layer (11) containing copper as a major ingredient on a substantially entire area of a surface of a second main surface side, and an insulating step of forming an insulating region (30) so as to remove a short circuit between at least the first transparent electrode layer (6) of the first main surface side and at least a second transparent electrode layer (10) and the back electrode layer (11) of the second main surface side, and performs the insulating step after the first transparent electrode layer forming step and the back electrode layer forming step. The insulating step includes a step of irradiating a laser beam along an entire periphery of an outer peripheral part of the first main surface onto a position within 3 mm from an outer peripheral end face of a one conductivity-type single crystalline silicon substrate (2) from the first main surface side.