Title:
SOLAR CELL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/045597
Kind Code:
A1
Abstract:
The present application provides a solar cell and a preparation method therefor. The preparation method for the solar cell comprises: providing a solar cell substrate having transparent conductive films; sequentially forming a plurality of copper seed layers on each transparent conductive film by means of physical vapor deposition; and electroplating the outermost copper seed layers to form copper electrodes. The deposition power for forming the innermost copper seed layers is 0.2 kW-0.8 kW, and the deposition power for forming the innermost copper seed layers is less than the deposition power for forming other copper seed layers. In the present application, the plurality of copper seed layers are sequentially deposited on each transparent conductive film, and the deposition power of each copper seed layer is controlled; by means of low-power sputtering of the innermost copper seed layers, bombardment damage to the transparent conductive films and an amorphous silicon layer in the deposition process can be reduced, and a protection effect is achieved; and the copper seed layers can be quickly deposited by means of high-power deposition of the subsequent copper seed layers, so as to meet the mass production speed requirement.
Inventors:
WANG JIN (CN)
YU YI (CN)
YU YI (CN)
Application Number:
PCT/CN2023/084944
Publication Date:
March 07, 2024
Filing Date:
March 30, 2023
Export Citation:
Assignee:
TONGWEI SOLAR ANHUI CO LTD (CN)
International Classes:
H01L31/08; H01L21/768
Foreign References:
| CN115312625A | 2022-11-08 | |||
| CN103794659A | 2014-05-14 | |||
| CN110797417A | 2020-02-14 | |||
| US6420258B1 | 2002-07-16 | |||
| US20070224809A1 | 2007-09-27 | |||
| US20160181450A1 | 2016-06-23 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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