Title:
PEROVSKITE TANDEM SOLAR CELL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/051382
Kind Code:
A1
Abstract:
The present application relates to the field of solar cells, in particular, to a perovskite tandem solar cell and a preparation method therefor. The perovskite tandem solar cell comprises a silicon bottom cell and a perovskite top cell; a silicon oxide layer and a P-type doped amorphous silicon layer are sequentially stacked on the top surface of the silicon bottom cell, and the P-type doped amorphous silicon layer is located on the bottom surface of the perovskite top cell; a perovskite light absorption layer of the perovskite top cell contains alkali metal ions. The P-type doped amorphous silicon layer is made of disordered silicon elementary substance, has many defects, and facilitates the movement of carriers; the tunneling of carriers can be improved by means of the cooperation of the silicon oxide layer and the P-type doped amorphous silicon layer, so that the tunneling efficiency of carriers between the silicon bottom cell and the perovskite top cell is greatly improved, and the open-circuit voltage and the conversion efficiency of the silicon bottom cell and the perovskite top cell are effectively superimposed.
Inventors:
XUE JIANFENG (CN)
WANG YONGJIE (CN)
YU YI (CN)
SU SHIJIE (CN)
WANG YONGJIE (CN)
YU YI (CN)
SU SHIJIE (CN)
Application Number:
PCT/CN2023/109835
Publication Date:
March 14, 2024
Filing Date:
July 28, 2023
Export Citation:
Assignee:
TONGWEI SOLAR ANHUI CO LTD (CN)
International Classes:
H01L31/0216; H01L31/0352; H01L31/0747; H10K30/40; H10K85/50
Foreign References:
| CN115621331A | 2023-01-17 | |||
| CN114792704A | 2022-07-26 | |||
| CN113451434A | 2021-09-28 | |||
| CN108649122A | 2018-10-12 | |||
| CN111710746A | 2020-09-25 | |||
| US20170077339A1 | 2017-03-16 | |||
| CN114447126A | 2022-05-06 | |||
| CN107564989A | 2018-01-09 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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