Method for recycling transparent conducting glass substrate of solar cell

Abstract

The invention relates to a method for recycling a transparent conducting glass substrate of a solar cell, comprising the following steps of preparation, etching and finish. In the steps, a poor solar cell with a failed manufacture procedure is prepared and sequentially provided with a glass substrate, a transparent conducting glass layer and a failed manufacture procedure layer, and the poor solar cell with a failed manufacture procedure is selectively etched by an etching medium; the etching rate of the failed manufacture procedure layer by the etching medium is far larger than the etching rate of the transparent conducting glass layer and the glass substrate, the etching medium mainly etches and removes the failed manufacture procedure layer, and the left glass substrate and the transparent conducting glass layer are recycled, thus the invention has the advantages and effects of defective product recycling in the manufacture procedure, waste reduction, and the like.

Description

technical field [0001] The invention relates to a method for recycling a transparent conductive glass substrate of a solar cell, in particular to a method for recycling a transparent conductive glass substrate of a solar cell with a failed layer in an etching process. Background technique [0002] Among the traditional solar cell manufacturing processes, for example, it can be simplified to the following steps: (1) prepare a glass substrate 91 (such as figure 1 shown); (2) coating a layer of transparent conductive glass layer 92 on the glass substrate 91 (such as figure 2 (3) form a p-Si layer 93, an i-Si layer 94 and an n-Si layer 95 on the transparent conductive glass layer 92 (see image 3 ); (4) afterwards, form an electrode layer 96 again (as image 3 shown); finally complete a finished product, such as Figure 4 As shown, the arrow at the bottom indicates the light incident direction. [0003] However, there are often some unstable factors in the solar cell manufa...

AI Technical Summary

Problems solved by technology

[0003] However, there are often some unstable factors in the solar cell manufacturing process, leading to process failure and component failure, that is, if the step of forming p-Si layer 93, i-Si layer 94 or n-Si layer 95 fails, It will cause the failure of the entire component and form defective products (or waste)

When the defect rate becomes higher, the overall cost will also increase, seriously affecting the competitiveness of manufacturers

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