Crystalline silicon solar cells

A technology of solar cells and crystalline silicon wafers, which is applied in the direction of circuits, electrical components, semiconductor devices, etc., can solve the problems of reducing the utilization efficiency of solar cells, high production costs of solar cells, and increased use of conductive paste, etc., to achieve increased Effects of large surface passivation area, area reduction, and print weight reduction
CN103094370BActive Publication Date: 2015-07-29山东力诺阳光电力科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
山东力诺阳光电力科技有限公司
Publication Date
2015-07-29

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Abstract

The invention relates to a silicon solar battery piece which comprises a crystal silicon slice, a front face grid line and a back face electrode. The front face grid line is located on the illuminated face of a battery and comprises a main grid and a vice grid. The main grid comprises primary main grids and secondary main grids, wherein the number of the primary main grids is at least two, the primary main grids are mutually parallel, each primary main grid is divided into at least two sections, and the secondary main grids are connected at the positions of fractured openings of the primary main grids through regular or irregular shapes or lines. The vice grid comprises primary vice grids and secondary vice grids, wherein the primary vice grids are evenly distributed outside the shapes which are formed by the secondary main grids and are perpendicular to the primary main grids, and the secondary vice grids are located inside the shapes which are formed by the secondary main grids and are arranged parallel to the primary main grids. On one hand, direct contact of a main gate electrode and the silicon slice can be decreased, surface passivation area is enlarged, the illuminated area of the solar battery is increased, and the photoelectric conversion efficiency of the solar battery is effectively improved; and on the other hand, silver paste consumption in the manufacturing process can be effectively reduced, and production cost is lowered.
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Description

technical field

[0001] The invention relates to a solar cell, in particular to a crystalline silicon solar cell. Background technique

[0002] The rapid development of the solar energy industry needs to continuously reduce the cost of materials, improve the efficiency of photoelectric conversion to reduce the cost of power generation, and achieve the goal of being the same price as the mains electricity or lower than the price of the mains electricity.

[0003] With the development of industrialization, conventional crystalline silicon cells have made great progress in improving conversion efficiency and reducing costs. The manufacturing process of crystalline silicon solar cells generally has the following steps: chemical cleaning and surface texture treatment, diffusion junction, edge etching and phosphorus silicon glass removal, anti-reflection film deposition, electrode printing, and sintering. In the process of converting light energy into electrical energy in a solar ...

Claims

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