Title:
SOLAR CELL AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/045945
Kind Code:
A1
Abstract:
The present application relates to the technical field of manufacturing of solar cells, and in particular to a solar cell and a manufacturing method therefor. The manufacturing method for the solar cell comprises: texturing two surfaces of a silicon wafer; then sequentially depositing a first intrinsic amorphous silicon layer and a phosphorus-doped amorphous silicon layer on the front surface of the silicon wafer; then oxidizing the back surface of the silicon wafer to form a silicon oxide layer on the back surface of the silicon wafer; then removing the silicon oxide layer on the back surface of the silicon wafer by using an acid solution; and finally, sequentially depositing a second intrinsic amorphous silicon layer and a boron-doped amorphous silicon layer on the back surface of the silicon wafer. According to the manufacturing method, the impact on a suede surface on the back surface of the silicon wafer can be reduced while the winding plating is removed, so that the problem of cell electric leakage is solved to a certain extent, and cells having good electrical performance and excellent yield are obtained.
Inventors:
CHENG HAO (CN)
YANG XIUQING (CN)
YANG XIUQING (CN)
Application Number:
PCT/CN2023/108563
Publication Date:
March 07, 2024
Filing Date:
July 21, 2023
Export Citation:
Assignee:
TONGWEI SOLAR JINTANG CO LTD (CN)
International Classes:
H01L31/20; H01L21/308; H01L31/076
Foreign References:
| CN115274936A | 2022-11-01 | |||
| CN111668345A | 2020-09-15 | |||
| CN114420767A | 2022-04-29 | |||
| CN113948608A | 2022-01-18 | |||
| CN113838950A | 2021-12-24 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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