Surface structure of silicon crystal cell and manufacturing method thereof

Abstract

The invention discloses a surface structure of a silicon crystal cell and a manufacturing method thereof. The surface structure of the silicon crystal cell comprises a main body, the main body is provided with a front surface and a back surface, wherein the roughness coefficient of the front surface of the main body is larger than that of the back surface of the main body; the surface morphology of a front surface microstructure comprises a plurality of tapering bodies; and the surface morphology of a back surface microstructure comprises a plurality of arc bodies or polygonal bodies. The invention enables the back surface of the surface structure of the silicon crystal cell to be flatter than the front surface of the same, thereby enhancing the photoelectric conversion efficiency and reducing the fragmenting probability in the manufacture process.

Description

technical field [0001] The invention relates to a silicon crystal battery, in particular to a surface structure of a silicon crystal battery and a manufacturing method thereof. Background technique [0002] At present, with the rising awareness of environmental protection and the prevailing mainstream value of pursuing energy saving and carbon reduction, the trend of green energy replacing petroleum energy is becoming more and more obvious. Therefore, related industries such as solar energy are developing vigorously to meet the needs of the market, especially the demand for solar cells increase is more pronounced. [0003] The photoelectric conversion efficiency of solar silicon cells is one of the most important parameters for evaluating the pros and cons. In the prior art, most of the surfaces of solar silicon crystal cells are simply acid-etched or alkali-etched. Most of the solar silicon crystal cells produced by these two etching methods have a large roughness coeffici...

AI Technical Summary

Problems solved by technology

In the prior art, most of the surfaces of solar silicon crystal cells are simply acid-etched or alkali-etched. Most of the solar silicon crystal cells produced by these two etching methods have a large roughness coefficient in most of the surface structures. Moreover, the thickness of the crystal battery is relatively thin, which is easy to cause fragments in the production process

In addition, the photoelectric conversion efficiency of the cells manufactured by the above two methods is not high

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