A kind of double-junction stacked parallel cadmium telluride thin film solar cell manufacturing process method
A solar cell and manufacturing process technology, applied in sustainable manufacturing/processing, final product manufacturing, circuits, etc., can solve the problems of no obvious improvement in conversion efficiency, low conversion efficiency, difficult market competition, etc., to solve the problem of battery voltage bias. High, improve market competitiveness, improve the effect of conversion efficiency
Active Publication Date: 2018-06-15
ZHONGSHAN RUIKE NEW ENERGY CO LTD
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Problems solved by technology
Although the manufacturing process of this existing battery is simple, the conversion efficiency is not high. After the product is marketed, the competitiveness is not enough. Since the open circuit voltage of thin-film solar cells is relatively high, although some manufacturers have designed the method of parallel reticle connection. Battery components reduce the open circuit voltage, but the conversion efficiency has not been significantly improved, and it is difficult to adapt to market competition
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[0016] refer to Figure 3-Figure 4 As shown, it is a method for manufacturing a double-junction stacked parallel cadmium telluride thin-film solar cell of the present invention, comprising the following steps:
[0017] (1) edging the substrate glass 10;
[0018] (2) Deposit and clean TCO conductive glass 20 on substrate glass 10;
[0019] (3) Deposit the first layer of cadmium sulfide 30 (CdS) on the TCO conductive glass;
[0020] (4) Depositing the first layer of cadmium telluride 40 (CdTe) on the first layer of cadmium sulfide;
[0021] (5) The first cadmium chloride activation treatment;
[0022] (6) Cleaning after the first activation;
[0023] (7) depositing a second layer of cadmium sulfide 50 (CdS) on the first layer of cadmium telluride 40;
[0024] (8) depositing a second layer of cadmium telluride 60 (CdTe) on the second layer of cadmium sulfide 50;
[0025] (9) The second cadmium chloride activation treatment;
[0026] (10) Cleaning after the second activatio...
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The invention discloses a double-section laminated parallel cadmium-telluride film solar cell manufacturing method, and the method comprises the following steps: grinding the edges of substrate glass; depositing TCO conductive glass on the substrate glass, and washing the TCO conductive glass; depositing a first cadmium sulfide layer on the TCO conductive glass; depositing a first cadmium-telluride layer on the first cadmium sulfide layer; carrying out the first activating treatment of cadmium chloride; carrying out the washing after the first activating; depositing a second cadmium sulfide layer on the first cadmium-telluride layer; depositing a second cadmium-telluride layer on the second cadmium sulfide layer; carrying out the second activating treatment of cadmium chloride; carrying out the washing after the second activating; carrying out P1 laser scribing; depositing a buffering layer; carrying out P2 laser scribing; depositing a metal back electrode; carrying out the P3 laser scribing of the back electrode; carrying out the laser scanning of edges; and carrying out the package testing. The method combines the characteristics of a cadmium telluride cell and the prior art for technological improvement, improves the conversion efficiency of the cell, and effectively reduces the open-circuit voltage of the cell.
Description
technical field [0001] The invention relates to the technical field of photovoltaic solar cells, in particular to a method for manufacturing a cadmium telluride thin-film solar cell with two junctions stacked in parallel. Background technique [0002] Thin-film solar cells are the direction of battery development in the future, especially cadmium telluride thin-film solar cells. Compared with crystalline silicon cells, cadmium telluride cells are mainly characterized by good weak light performance, low attenuation rate, and good temperature coefficient. They are favored by many institutions. Research. However, it has certain disadvantages, such as conversion efficiency is not as high as that of crystalline silicon cells, and the open circuit voltage is relatively high. The invention of this process can solve this disadvantage and bring obvious advantages to the development of cadmium telluride cells. [0003] At present, the existing cadmium telluride battery technology des...
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IPC IPC(8): H01L31/18H01L31/0296
CPCH01L31/0296H01L31/18H01L31/1828Y02E10/543Y02P70/50
Inventor 鄢开均何光俊齐鹏飞陈金良赖新暖牛改宇
Owner ZHONGSHAN RUIKE NEW ENERGY CO LTD