Silicon heterojunction solar cell with electroplating electrode and manufacturing method thereof

Abstract

The embodiment of the invention discloses a silicon heterojunction solar cell with an electroplating electrode and a manufacturing method thereof. The method comprises the steps that a metal seed layer is formed on the surface, where a grid needs to be manufactured, of a cell substrate; a silk-screen printing ink process is used for forming an ink grid line groove pattern on the surface of the metal seed layer; after a preset time interval, the ink grid line groove pattern is cured; the ink grid line groove pattern is used as a mask film, an electroplating process is used for depositing a composite metal layer; the ink grid line groove pattern and the part, which is not in contact with the composite metal layer, of the metal seed layer is removed. The implementation mode for forming the ink grid line groove pattern by the silk-screen printing ink process is simple and controllable, moreover, ink can be removed easily, and the manufacturing technology is simple. In the curing process, the ink can be evenly expanded and deformed, the width of an opening of the obtained ink grid line groove pattern is small, the depth-width ratio of a formed metal grid line is large, the light shading area is small, and the efficiency of the silicon heterojunction solar cell with the electroplating electrode is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a silicon heterojunction solar cell with electroplating electrodes and a manufacturing method thereof. Background technique [0002] In solar cell technology, a silicon heterojunction solar cell is a heterojunction cell composed of a doped amorphous silicon emitter region, an extremely thin amorphous silicon intrinsic layer and a crystalline silicon base region. properties such as temperature coefficient and low attenuation. Carriers generated by the PN junction of silicon heterojunction solar cells under light are transported and collected through the surface transparent conductive film and metal grid lines. Wherein, the greater the aspect ratio of the metal grid lines, the lower the shading area of ​​the silicon heterojunction solar cell, and the higher the efficiency of the silicon heterojunction solar cell. When making metal grid lines, electroplating electrode technolo...

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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a silicon heterojunction solar cell with electroplating electrodes and a manufacturing method thereof, which are used to solve the problem of using a traditional process to form a grid line groove pattern. The problem of poor width and flatness control and high cost

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