Method for producing a textured structure of a crystalline silicon solar cell
AssigneeCsi Cells Co., Ltd.
InventorsSHUAI ZOU, XUSHENG WANG, GUOQIANG XING
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Abstract
A method for producing a textured structure of a crystalline silicon solar cell is provided, including the following steps: (1) forming a porous layer structure on a surface of a silicon wafer; (2) then cleaning with a first alkaline chemical solution; (3) removing residual metal particles with a cleaning solution; (4) and then etching the surface with a first chemical etching solution to obtain the textured structure of the crystalline silicon solar cell. The method greatly prolongs the lifetime of the mixed solution of hydrofluoric acid and nitric acid and ensures the stability and uniformity of the textured structure.
Claims16
A method for producing a textured structure of a crystalline silicon solar cell, the method comprising:
- (1) forming a porous layer structure on a surface of a silicon wafer;
- (2) cleaning with a first alkaline chemical solution;
- (3) removing residual metal particles with a first cleaning solution;
- and
- (4) etching the surface with a first chemical etching solution to obtain the textured structure of the crystalline silicon solar cell, wherein the first chemical etching solution is a mixed solution of hydrofluoric acid and an oxidizing agent.
A method for producing a textured structure of a crystalline silicon solar cell, the method comprising:
- (1) forming a porous layer structure on a surface of a silicon wafer;
- (2) cleaning with a second alkaline chemical solution, and removing residual metal particles at a bottom of holes;
- and
- (3) etching the surface with a first chemical etching solution to obtain the textured structure of the crystalline silicon solar cell, wherein the first chemical etching solution is a mixed solution of hydrofluoric acid and an oxidizing agent.
Dependencies are inferred from the claim text.