High efficient solar cell preparation method
A solar cell, high-efficiency technology, applied in the manufacture of circuits, electrical components, final products, etc., can solve the problem of low Uoc and Isc of crystalline silicon cells, poor gettering passivation effect of silicon nitride film, low conversion efficiency of crystalline silicon cells, etc. problem, achieve high Uoc and Isc, reduce compounding, and improve conversion efficiency
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Embodiment 1
[0017] A method for preparing a high-efficiency solar cell of the present invention includes chemical cleaning and surface texture treatment, diffusion junction, edge etching and phosphorus silicon glass removal, oxidation, deposition of anti-reflection film, printing electrodes, and sintering steps. On the basis of the silicon solar cell preparation process, adjust the diffusion process to obtain an N-type layer with a higher surface concentration and a lower junction depth, and then undergo an etching and phosphorus washing process to clean the phosphosilicate glass on the surface of the silicon wafer, and then add a step The oxidation process forms a layer of silicon dioxide gettering passivation layer on the surface of the silicon wafer, and makes the impurities in the N-type layer redistributed without increasing the total amount of impurities in the N-type layer, reducing the doping concentration on the surface, and then The process adopts the conventional crystalline sil...
Embodiment 2
[0026] A method for preparing a high-efficiency solar cell of the present invention includes chemical cleaning and surface texture treatment, diffusion junction, edge etching and phosphorus silicon glass removal, oxidation, deposition of anti-reflection film, printing electrodes, and sintering steps. On the basis of the silicon solar cell preparation process, adjust the diffusion process to obtain an N-type layer with a higher surface concentration and a lower junction depth, and then undergo an etching and phosphorus washing process to clean the phosphosilicate glass on the surface of the silicon wafer, and then add a step The oxidation process forms a layer of silicon dioxide gettering passivation layer on the surface of the silicon wafer, and makes the impurities in the N-type layer redistributed without increasing the total amount of impurities in the N-type layer, reducing the doping concentration on the surface, and then The process adopts the conventional crystalline sil...
Embodiment 3
[0035] A method for preparing a high-efficiency solar cell of the present invention includes chemical cleaning and surface texture treatment, diffusion junction, edge etching and phosphorus silicon glass removal, oxidation, deposition of anti-reflection film, printing electrodes, and sintering steps. On the basis of the silicon solar cell preparation process, adjust the diffusion process to obtain an N-type layer with a higher surface concentration and a lower junction depth, and then undergo an etching and phosphorus washing process to clean the phosphosilicate glass on the surface of the silicon wafer, and then add a step The oxidation process forms a layer of silicon dioxide gettering passivation layer on the surface of the silicon wafer, and makes the impurities in the N-type layer redistributed without increasing the total amount of impurities in the N-type layer, reducing the doping concentration on the surface, and then The process adopts the conventional crystalline sil...
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