Solar cell manufacturing method, solar cell manufacturing device, and solar cell

Abstract

Disclosed is a solar cell manufacturing method in which a photoelectric converter (12) is formed that comprises multiple compartment elements (21, 21s) and in which the aforementioned compartment elements (21, 21s) that are mutually adjacent are electrically connected to one another. Within the aforementioned photoelectric converter (12), a first compartment element (21s) with structural defects (R, A1, A2, A3) is specified, and by specifying defect sites based on the distribution of resistance values obtained by measuring resistance values at multiple positions between mutually adjacent compartment elements (21, 21s), sites at which structural defects (R, A1, A2, A3) are present within the aforementioned first compartment element (21s) are defined, and laser light is applied to the aforementioned first compartment element (21s) and to a second compartment element (21) adjacent to the aforementioned first compartment element (21s) to cross boundary part (19) between the aforementioned first compartment element (21s) that comprises sites at which the aforementioned structural defects (R, A1, A2, A3) are present and the aforementioned second compartment element (21), and the aforementioned defects (R, A1, A2, A3) are eliminated or isolated.

Description

technical field [0001] The present invention relates to a solar cell, a method for manufacturing a solar cell, and an apparatus for manufacturing a solar cell, and more particularly, to a solar cell capable of repairing structural defects within a minimum range, and a solar cell capable of detecting and repairing structural defects at low cost The manufacturing method and manufacturing device. [0002] This application claims priority based on Japanese Patent Application No. 2008-090570 filed on March 31, 2008, the content of which is incorporated herein by reference. Background technique [0003] From the viewpoint of efficient use of energy, in recent years, solar cells are being used more and more widely. In particular, solar cells using silicon single crystals are excellent in energy conversion efficiency per unit area. However, on the other hand, since a solar cell using a silicon single crystal uses a silicon wafer obtained by cutting a silicon single crystal ingot, ...

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Problems solved by technology

However, when a high bias voltage higher than the required voltage is applied, there is a problem of damage to the normal part where no defect occurs

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