Surface reconstruction of wide-bandgap perovskites enables efficient perovskite/silicon tandem solar cells
Wide-bandgap perovskite solar cells (WBG-PSCs) are critical for developing perovskite/silicon tandem solar cells. The defect-rich surface of WBG-PSCs will lead to severe interfacial carrier loss and phase segregation, deteriorating the device's performance. Herein, we develop a surface reconstruction method by removing the defect-rich crystal surface by nano-polishing and then passivating the newly exposed high-crystallinity surface. This method can refresh the perovskite/electron-transporter interface and release the residual lattice strain, improving the charge collection and inhibiting the ion migration of WBG perovskites. As a result, we can achieve certified efficiencies of 23.67% and 21.70% for opaque and semi-transparent PSCs via a 1.67-eV perovskite absorber. Moreover, we achieve four-terminal perovskite/silicon tandem solar cells with a certified efficiency of 33.10% on an aperture area of one square centimeter.
Authors
- Yingji Li (ORCID: https://orcid.org/0000-0002-3575-1395)
- Chengbo Tian (ORCID: https://orcid.org/0000-0002-8451-7829)
- Qinghua Zeng (ORCID: https://orcid.org/0000-0002-0715-1325)
- Jiarong Huang (ORCID: https://orcid.org/0009-0008-6069-9067)
- Bingru Deng
- Zheng Fang (ORCID: https://orcid.org/0000-0001-9628-5706)
- Liqiang Xie (ORCID: https://orcid.org/0000-0001-8129-4431)
- Yawen Zhong
- Zhanhua Wei (ORCID: https://orcid.org/0000-0003-2687-0293)
- Yongbin Jin
- Jinxin Yang (ORCID: https://orcid.org/0000-0003-3880-0233)
- Yue Yin (ORCID: https://orcid.org/0000-0002-6154-1412)
- Xing Yang (ORCID: https://orcid.org/0000-0002-5512-1817)
- Huiping Feng
- Lisha Chen (ORCID: https://orcid.org/0000-0001-8980-5275)
- Hao Wang (ORCID: https://orcid.org/0000-0002-0594-3185)
- Kaikai Liu (ORCID: https://orcid.org/0000-0001-8656-770X)
- Xipeng Xu
- Jinyan Zhang (ORCID: https://orcid.org/0009-0001-2001-1773)
- Yang Liu (ORCID: https://orcid.org/0000-0002-7240-1546)
Institutions
- Huaqiao University (CN)
- Henan University of Science and Technology (CN)
- Kunshan Govisionox Optoelectronic (China) (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2024-12-04
- DOI
- https://doi.org/10.1038/s41467-024-54925-4
- Citations
- 75
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 15.65
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Fujian Province
- Huaqiao University