Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetate
Abstract All-perovskite tandem solar cells (APTSCs) offer the potential to surpass the Shockley-Queisser limit of single-junction solar cells at low cost. However, high-performance APTSCs contain unstable methylammonium (MA) cation in the tin-lead (Sn-Pb) narrow bandgap subcells. Currently, MA-free...
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56549-8 |
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| author | Xufeng Liao Xuefei Jia Weisheng Li Xiting Lang Jianhua Zhang Xinyu Zhao Yitong Ji Qingguo Du Chun-Hsiao Kuan Zhiwei Ren Wenchao Huang Yang Bai Kaicheng Zhang Chuanxiao Xiao Qianqian Lin Yi-Bing Cheng Jinhui Tong |
| author_facet | Xufeng Liao Xuefei Jia Weisheng Li Xiting Lang Jianhua Zhang Xinyu Zhao Yitong Ji Qingguo Du Chun-Hsiao Kuan Zhiwei Ren Wenchao Huang Yang Bai Kaicheng Zhang Chuanxiao Xiao Qianqian Lin Yi-Bing Cheng Jinhui Tong |
| author_sort | Xufeng Liao |
| collection | DOAJ |
| description | Abstract All-perovskite tandem solar cells (APTSCs) offer the potential to surpass the Shockley-Queisser limit of single-junction solar cells at low cost. However, high-performance APTSCs contain unstable methylammonium (MA) cation in the tin-lead (Sn-Pb) narrow bandgap subcells. Currently, MA-free Sn-Pb perovskite solar cells (PSCs) show lower performance compared with their MA-containing counterparts. This is due to the high trap density associated with Sn2+ oxidation, which is exacerbated by the rapid crystallization of MA-free Sn-containing perovskite. Here, a multifunctional additive rubidium acetate (RbAC) is proposed to passivate Sn-Pb perovskite. We find that RbAC can suppress Sn2+ oxidation, alleviate microstrain, and improve the crystallinity of the MA-free Sn-Pb perovskite. Consequently, the resultant Sn-Pb PSCs achieve a power conversion efficiency (PCE) of 23.02%, with an open circuit voltage (Voc) of 0.897 V, and a filling factor (FF) of 80.64%, and more importantly the stability of the device is significantly improved. When further integrated with a 1.79-electron volt MA-free wide-bandgap PSC, a 29.33% (certified 28.11%) efficient MA-free APTSCs with a high Voc of 2.22 volts is achieved. |
| format | Article |
| id | doaj-art-23c5d3f117f9431e8b232d66bd24aadd |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-23c5d3f117f9431e8b232d66bd24aadd2025-02-02T12:32:46ZengNature PortfolioNature Communications2041-17232025-01-011611910.1038/s41467-025-56549-8Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetateXufeng Liao0Xuefei Jia1Weisheng Li2Xiting Lang3Jianhua Zhang4Xinyu Zhao5Yitong Ji6Qingguo Du7Chun-Hsiao Kuan8Zhiwei Ren9Wenchao Huang10Yang Bai11Kaicheng Zhang12Chuanxiao Xiao13Qianqian Lin14Yi-Bing Cheng15Jinhui Tong16State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of TechnologyState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of TechnologyState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of TechnologyNingbo Institute of Materials Technology and Engineering, Chinese Academy of SciencesState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of TechnologyState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of TechnologyState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of TechnologySchool of information engineering, Wuhan University of TechnologyDepartment of Applied Chemistry, and Institute of Molecular Science National Yang Ming Chiao Tung University 1001 Ta-Hseuh RdDepartment of Electrical and Electronic Engineering, Photonics Research Institute (PRI), Research Institute for Intelligent Wearable Systems (iWEAR), The Hong Kong Polytechnic UniversityState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of TechnologyFaculty of Materials Science and Energy Engineering, Shenzhen University of Advanced TechnologyInstitute of Materials for Electronics and Energy Technology (i-MEET), Department of Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstrasse 7Ningbo Institute of Materials Technology and Engineering, Chinese Academy of SciencesKey Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan UniversityState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of TechnologyState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of TechnologyAbstract All-perovskite tandem solar cells (APTSCs) offer the potential to surpass the Shockley-Queisser limit of single-junction solar cells at low cost. However, high-performance APTSCs contain unstable methylammonium (MA) cation in the tin-lead (Sn-Pb) narrow bandgap subcells. Currently, MA-free Sn-Pb perovskite solar cells (PSCs) show lower performance compared with their MA-containing counterparts. This is due to the high trap density associated with Sn2+ oxidation, which is exacerbated by the rapid crystallization of MA-free Sn-containing perovskite. Here, a multifunctional additive rubidium acetate (RbAC) is proposed to passivate Sn-Pb perovskite. We find that RbAC can suppress Sn2+ oxidation, alleviate microstrain, and improve the crystallinity of the MA-free Sn-Pb perovskite. Consequently, the resultant Sn-Pb PSCs achieve a power conversion efficiency (PCE) of 23.02%, with an open circuit voltage (Voc) of 0.897 V, and a filling factor (FF) of 80.64%, and more importantly the stability of the device is significantly improved. When further integrated with a 1.79-electron volt MA-free wide-bandgap PSC, a 29.33% (certified 28.11%) efficient MA-free APTSCs with a high Voc of 2.22 volts is achieved.https://doi.org/10.1038/s41467-025-56549-8 |
| spellingShingle | Xufeng Liao Xuefei Jia Weisheng Li Xiting Lang Jianhua Zhang Xinyu Zhao Yitong Ji Qingguo Du Chun-Hsiao Kuan Zhiwei Ren Wenchao Huang Yang Bai Kaicheng Zhang Chuanxiao Xiao Qianqian Lin Yi-Bing Cheng Jinhui Tong Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetate Nature Communications |
| title | Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetate |
| title_full | Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetate |
| title_fullStr | Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetate |
| title_full_unstemmed | Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetate |
| title_short | Methylammonium-free, high-efficiency, and stable all-perovskite tandem solar cells enabled by multifunctional rubidium acetate |
| title_sort | methylammonium free high efficiency and stable all perovskite tandem solar cells enabled by multifunctional rubidium acetate |
| url | https://doi.org/10.1038/s41467-025-56549-8 |
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