Monocrystal silicon battery plate efficient flock preparing special corrosive solution

Abstract

The invention discloses a monocrystal silicon battery plate efficient flock preparing special corrosive solution as well as a preparation method thereof and a method for preparing flocks thereby. The monocrystal silicon battery plate efficient flock preparing special corrosive solution is a mixed solution of potassium hydroxide and 1,4-cyclohexanediol, wherein the concentration of the potassium hydroxide is controlled to 15-25g / L, and the concentration of the 1,4-cyclohexanediol is controlled to 45-55g / L. The invention replaces the traditional flock preparing corrosive solution prepared from strong base and isopropanol, has the flock preparing time of only 10 minutes, reduces 20 minutes or so compared with the prior art and can improve the flock preparing efficiency of the traditional monocrystal silicon battery plate twice.

Description

technical field [0001] The invention relates to a method for making texture of a monocrystalline silicon solar cell, in particular to an alkali corrosion solution for making texture of a monocrystalline silicon solar cell. Background technique [0002] In the production process of solar cells, how to improve the photoelectric conversion efficiency of solar cells is a subject that those skilled in the art have been exploring. Practice has proved that reducing the surface reflectance of cells is an important way to improve the photoelectric conversion efficiency of solar cells. At present, the technical solution for industrial application is to reduce the surface reflectivity by manufacturing textured surface and depositing anti-reflection film on the surface of silicon wafers, so as to improve the light absorption efficiency of silicon wafers. For the production of suede surface of monocrystalline silicon solar cells, the characteristics of different corrosion rates of lye o...

AI Technical Summary

Problems solved by technology

[0003] At present, in the texturing process of monocrystalline silicon solar cells, the etching solution used for texturing is a mixed solution of sodium hydroxide or potassium hydroxide solution and isopropanol. According to the current corrosion texturing process, the etching time is about 30 Minutes, due to the long corrosion time, the output of the texturing process cannot be further expanded, so that the production efficiency of solar cells cannot be further improved

Too long texturing cycle has become a technical difficulty that limits the efficient mass production of solar cells

How to shorten the velvet making time, people have improved the existing technology from the aspects of equipment, velvet making process conditions, etc., although there is a certain effect, but no breakthrough progress has been made. A special corrosion solution for high-efficiency texturing of monocrystalline silicon cells was developed

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