Cleaning method of texture surface making equipment for single crystal silicon

Abstract

The invention discloses a cleaning method of texture surface making equipment for single crystal silicon, belonging to the technical field of solar battery preparation. The cleaning method comprises the steps: draining, water flushing, flakes removing, water flushing, wiping, water flushing, soaking and water flushing. The cleaning method of texture surface making equipment for single crystal silicon can increase the average conversion efficiency of a solar battery, prolong the maintenance period of equipment and increase the productive capacity of the equipment.

Description

technical field [0001] The invention belongs to the technical field of solar cell preparation, and in particular relates to a cleaning method for monocrystalline silicon texturing equipment. Background technique [0002] Texturing is a vital link in the production of crystalline silicon solar cells. Texturing can reduce the reflectivity of sunlight on the silicon surface, thereby increasing the light absorption rate and increasing the conversion efficiency of solar cells. The single crystal texturing equipment is generally a trough-type equipment, and the purpose of preparing the textured surface is achieved through chemical corrosion. However, after the equipment is used for a certain period of time, the corroded silicon, impurities on the silicon surface, and other organic substances will affect the etching solution, which will lead to a decrease in the final conversion efficiency of the solar cell. Therefore, regular maintenance is required to ensure that the equipment ...

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Problems solved by technology

[0010] It can be seen that when maintaining the texturing equipment in the existing method, silicon powder and particles in the tank are only removed by clearing debris and washing with water, but it is difficult to remove tiny particles and organic matter sticking to the tank wall, especially some organic matter , The fine crystallization of the liquid medicine and additives has a bad influence on the additives, which will affect the texture effect of the additives, and incomplete cleaning will cause a certain degree of pollution to the liquid medicine

In addition, the existence of metal ions will also lead to the recombination of electrons in the solar cell, thereby reducing the conversion efficiency of the solar cell, which will eventually affect the average conversion efficiency and yield of the solar cell, and the short maintenance period of the equipment will cause waste of manpower and material resources.

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