Spontaneous bifacial capping of perovskite film for efficient and mechanically stable flexible solar cell
Abstract Flexible perovskite solar cells (F-PSCs) are appealing for their flexibility and high power-to-weight ratios. However, the fragile grain boundaries (GBs) in perovskite films can lead to stress and strain cracks under bending conditions, limiting the performance and stability of F-PSCs. Here...
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| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55652-6 |
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| author | Junjun Jin Zhenkun Zhu Yidong Ming Yuan Zhou Jitao Shang Shaofu Wang Xiaxia Cui Tonghui Guo Dan Zhang Guanqi Tang Qianqian Lin Jinhua Li Xiaowei Liu Sheng Liu Zhiwen Chen Zhao Hu Hong Meng Qidong Tai |
| author_facet | Junjun Jin Zhenkun Zhu Yidong Ming Yuan Zhou Jitao Shang Shaofu Wang Xiaxia Cui Tonghui Guo Dan Zhang Guanqi Tang Qianqian Lin Jinhua Li Xiaowei Liu Sheng Liu Zhiwen Chen Zhao Hu Hong Meng Qidong Tai |
| author_sort | Junjun Jin |
| collection | DOAJ |
| description | Abstract Flexible perovskite solar cells (F-PSCs) are appealing for their flexibility and high power-to-weight ratios. However, the fragile grain boundaries (GBs) in perovskite films can lead to stress and strain cracks under bending conditions, limiting the performance and stability of F-PSCs. Herein, we show that the perovskite film can facilely achieve in situ bifacial capping via introducing 4-(methoxy)benzylamine hydrobromide (MeOBABr) as the precursor additive. The spontaneously formed MeOBABr capping layers flatten the grain boundary grooves (GBGs), enable the release of the mechanical stress at the GBs during bending, rendering enhanced film robustness. They also contribute to the reduction of the residual strain and the passivation of the surface defects of the perovskite film. Besides, the molecular polarity of MeOBABr can result in surface band bending of the perovskite that favors the interfacial charge extraction. The corresponding inverted F-PSCs based on nickel oxide (NiOx)/poly(triaryl amine) (PTAA) hole transport bilayer reach a 23.7% power conversion efficiency (PCE) (22.9% certified) under AM 1.5 G illumination and a 42.46% PCE under 1000 lux indoor light illumination. Meanwhile, a robust bending durability of the device is also achieved. |
| format | Article |
| id | doaj-art-dbdb93f68a40496d9306d9a123d9da81 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-dbdb93f68a40496d9306d9a123d9da812025-01-05T12:36:56ZengNature PortfolioNature Communications2041-17232025-01-0116111110.1038/s41467-024-55652-6Spontaneous bifacial capping of perovskite film for efficient and mechanically stable flexible solar cellJunjun Jin0Zhenkun Zhu1Yidong Ming2Yuan Zhou3Jitao Shang4Shaofu Wang5Xiaxia Cui6Tonghui Guo7Dan Zhang8Guanqi Tang9Qianqian Lin10Jinhua Li11Xiaowei Liu12Sheng Liu13Zhiwen Chen14Zhao Hu15Hong Meng16Qidong Tai17The Institute of Technological Sciences, Wuhan UniversityThe Institute of Technological Sciences, Wuhan UniversitySchool of Materials Science and Engineering, Hubei UniversityThe Institute of Technological Sciences, Wuhan UniversityThe Institute of Technological Sciences, Wuhan UniversitySchool of Physics and Technology, Wuhan UniversityThe Institute of Technological Sciences, Wuhan UniversityThe Institute of Technological Sciences, Wuhan UniversityThe Institute of Technological Sciences, Wuhan UniversityResearch Institute of Frontier Science, Southwest Jiaotong UniversitySchool of Physics and Technology, Wuhan UniversitySchool of Materials Science and Engineering, Hubei UniversityShenzhen Institute of Advanced Electronic Materials, Chinese Academy of SciencesThe Institute of Technological Sciences, Wuhan UniversityThe Institute of Technological Sciences, Wuhan UniversitySchool of Advanced Materials, Peking University Shenzhen Graduate School, Peking UniversitySchool of Advanced Materials, Peking University Shenzhen Graduate School, Peking UniversityThe Institute of Technological Sciences, Wuhan UniversityAbstract Flexible perovskite solar cells (F-PSCs) are appealing for their flexibility and high power-to-weight ratios. However, the fragile grain boundaries (GBs) in perovskite films can lead to stress and strain cracks under bending conditions, limiting the performance and stability of F-PSCs. Herein, we show that the perovskite film can facilely achieve in situ bifacial capping via introducing 4-(methoxy)benzylamine hydrobromide (MeOBABr) as the precursor additive. The spontaneously formed MeOBABr capping layers flatten the grain boundary grooves (GBGs), enable the release of the mechanical stress at the GBs during bending, rendering enhanced film robustness. They also contribute to the reduction of the residual strain and the passivation of the surface defects of the perovskite film. Besides, the molecular polarity of MeOBABr can result in surface band bending of the perovskite that favors the interfacial charge extraction. The corresponding inverted F-PSCs based on nickel oxide (NiOx)/poly(triaryl amine) (PTAA) hole transport bilayer reach a 23.7% power conversion efficiency (PCE) (22.9% certified) under AM 1.5 G illumination and a 42.46% PCE under 1000 lux indoor light illumination. Meanwhile, a robust bending durability of the device is also achieved.https://doi.org/10.1038/s41467-024-55652-6 |
| spellingShingle | Junjun Jin Zhenkun Zhu Yidong Ming Yuan Zhou Jitao Shang Shaofu Wang Xiaxia Cui Tonghui Guo Dan Zhang Guanqi Tang Qianqian Lin Jinhua Li Xiaowei Liu Sheng Liu Zhiwen Chen Zhao Hu Hong Meng Qidong Tai Spontaneous bifacial capping of perovskite film for efficient and mechanically stable flexible solar cell Nature Communications |
| title | Spontaneous bifacial capping of perovskite film for efficient and mechanically stable flexible solar cell |
| title_full | Spontaneous bifacial capping of perovskite film for efficient and mechanically stable flexible solar cell |
| title_fullStr | Spontaneous bifacial capping of perovskite film for efficient and mechanically stable flexible solar cell |
| title_full_unstemmed | Spontaneous bifacial capping of perovskite film for efficient and mechanically stable flexible solar cell |
| title_short | Spontaneous bifacial capping of perovskite film for efficient and mechanically stable flexible solar cell |
| title_sort | spontaneous bifacial capping of perovskite film for efficient and mechanically stable flexible solar cell |
| url | https://doi.org/10.1038/s41467-024-55652-6 |
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