Method for manufacturing solar cell

Abstract

Provided is a method for manufacturing a solar cell wherein a photoelectric conversion body, which has a first electrode layer, a semiconductor layer and a second electrode layer stacked therein in this order, is formed on one surface of a substrate, a connecting portion between the first electrode layer and the second electrode layer is provided, the photoelectric conversion body has a plurality of separated elements which are electrically separated by scribe lines having the semiconductor layer and the second electrode layer removed therefrom, and the separated elements adjacent to each other are electrically connected. The method is provided with a defective region specifying step of specifying a region where a structural defect of the photoelectric conversion body exists, and a repair step of removing or separating the structural defect by irradiating the photoelectric conversion body with a laser beam, forming three repair lines each of which has the semiconductor layer and the second electrode layer removed therefrom, and surrounding the region where the structural defect exists by using the three repair lines and the one scribe line. In a region alpha including a contact section where the semiconductor layer is in contact with the substrate in alpha region between the structural defect and the connecting section in the photoelectric conversion body, one repair line among the three repair lines is formed.

Description

technical field [0001] The present invention relates to a method of manufacturing a solar cell. More specifically, the present invention relates to the manufacture of a solar cell capable of removing and separating a structural defect region from a normal region by removing a semiconductor layer and a second electrode layer with a laser to form a repair line and by using the repair line and the scribe line. method. More specifically, the present invention relates to a method of manufacturing a solar cell capable of minimizing reduction in photoelectric conversion efficiency by minimizing the area used to remove and separate structural defect regions from normal regions. [0002] This application claims priority based on Japanese Patent Application No. 2008-222171 for which it applied in Japan on August 29, 2008, and uses the content here. Background technique [0003] From the viewpoint of efficient energy utilization, solar cells have been widely and widely used in recent...

AI Technical Summary

Problems solved by technology

In order to remove these three layers, it is necessary to irradiate the laser multiple times, thus resulting in an increase in the process

Furthermore, the photoelectric converter of the solar cell may be damaged

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