Pretreatment method of novel wet-process flower basket

Abstract

The invention discloses a pretreatment method of a novel wet-process flower basket. The pretreatment method comprises the following steps: (a), generating ozone by an ozone generator, enabling the generated ozone to enter an ozone and hydrochloric acid tank through an ultrapure water pipeline, and controlling the concentration of the ozone at 1-100ppm; (b), controlling the concentration of hydrochloric acid at 0.01-10mol / L, controlling the temperature of a chemical liquid in the ozone and hydrochloric acid tank at 20-50 DEG C, and uniformly mixing the ozone and the hydrochloric acid in the ozone and hydrochloric acid tank in a bubbling manner; (c), immersing the novel wet-process flower basket in the chemical liquid in the ozone and hydrochloric acid tank, soaking for more than 24h. By thepretreatment method, pretreatment of the novel wet-process flower basket through the existing lye tank can be replaced, a production enterprise can be helped to make full use of the conventional tank-type texturing machine, the utilization efficiency of the tank-type texturing machine is improved, the production progress is accelerated, and the economic benefits of the production enterprise are increased.

Description

technical field [0001] The invention belongs to the technical field of silicon wafer texturing for solar cells, and in particular relates to a pretreatment method of a new wet-process flower basket. Background technique [0002] In the production of crystalline silicon solar monocrystalline cells, a trough-type texturing machine is used for alkali texturing to form a texture, and the silicon wafer is placed in a wet flower basket, which is soaked in lye, and the silicon wafer reacts with the alkali to form a texture . During the texturing process, the silicon chip is placed in the wet flower basket through the teeth of the wet flower basket, and it is difficult for the lye to fully contact the silicon chip at the contact position between the silicon chip and the tooth, and the chemical reaction kinetics of the lye at this position The chemical resistance is relatively large, and at the same time, due to the hydrophobicity of the new wet flower basket itself, it is difficult...

AI Technical Summary

Problems solved by technology

[0004] However, in the production of crystalline silicon solar monocrystalline cells, a large number of wet flower baskets need to be used, and only the lye tank of the existing trough texturing machine is used to pretreat the new wet flower baskets, and the number of new wet flower baskets is pretreated each time Limited, it will take a long time, and occupy the lye tank at the same time, affecting the production progress, thus affecting the economic benefits of the production enterprise

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