Single-side texturing method for crystalline silicon cell

Abstract

The invention discloses a single-side texturing method for a crystalline silicon cell, and the method comprises the steps: inserting wafers: inserting two silicon wafers into each clamping groove; texturing the silicon wafer: carrying out single-side corrosion on the silicon wafer by using liquid medicine to obtain a textured surface on the silicon wafer; slicing: the two silicon wafers placed in the same clamping groove are separated; and sequentially carrying out acid pickling, water washing and drying on the silicon wafer. The single-face texturing and chain type drying mode is adopted, the capacity of a machine table is effectively improved, the silicon wafer corrosion amount is reduced, and the unit consumption and the wastewater treatment pressure are reduced. Groove type drying is replaced by chain type drying, so that the silicon wafer drying effect is thoroughly improved, the battery conversion efficiency and the rate of graded products are improved, and the production line stability is improved.

Description

technical field [0001] The invention belongs to the technical field of crystalline silicon battery manufacturing, and in particular relates to a method for making texture on one side of a crystalline silicon battery. Background technique [0002] At present, in the texturing process of crystalline silicon battery manufacturing, wet double-sided texturing is generally used, that is, using a certain ratio of chemical solution to corrode both sides of the silicon wafer to obtain a specific texture, and using the method of slot drying , and finally obtain the silicon wafer with the textured surface, and proceed to the next process. [0003] Such as figure 1 As shown, in the existing double-sided texturing process, after the flower basket is loaded with silicon wafers, it passes through each tank of the texturing machine in turn, and finally the texturing is completed and enters the next process. The various tanks of the texturing machine are in order: the first alkali washing ...

AI Technical Summary

Problems solved by technology

Due to the tight contact between the silicon wafer and the card slot carrying the flower basket, there is a risk that the mixed water droplets cannot be completely dried, which has become a difficult problem within the industry

Silicon wafers that have not been dried will not only affect the oxidation of the silicon wafer itself and the surrounding silicon wafers, resulting in a serious decline in the efficiency of the battery and a decrease in the authenticity rate, but also pollute the tooling, causing a continuous impact on the battery efficiency and authenticity rate, and affecting the quality of the production line. stability

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