Holistic Optimization toward Ultrathin Flexible Perovskite Solar Cells with High Efficiency and Mechanical Robustness
Abstract An ultrathin and flexible perovskite solar cell (f‐PSC) is highly desirable as a portable power source, while the rigidity of key components including perovskite and transparent electrode of a device leads to challenges in fabrication. Here, several approaches are developed to improve the m...
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Wiley
2025-07-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202415372 |
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| author | Guanqi Tang Fangyuan Zheng Jiajun Song Qidong Tai Jiong Zhao Feng Yan |
| author_facet | Guanqi Tang Fangyuan Zheng Jiajun Song Qidong Tai Jiong Zhao Feng Yan |
| author_sort | Guanqi Tang |
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| description | Abstract An ultrathin and flexible perovskite solar cell (f‐PSC) is highly desirable as a portable power source, while the rigidity of key components including perovskite and transparent electrode of a device leads to challenges in fabrication. Here, several approaches are developed to improve the mechanical flexibility and photovoltaic performance of ultrathin f‐PSCs. First, a two‐dimensional perovskite with low Young's modulus is introduced at the boundaries of perovskite films as a lubricant to release stress which is confirmed by in situ TEM characterization. Second, conductive PEDOT:PSS doped with sucralose is used as a transparent electrode to enhance the mechanical flexibility and photovoltaic performance of the device. Third, an ultrathin PET substrate is employed to shift the neutral plane into the perovskite film which further improves the mechanical flexibility of devices. Consequently, an ultrathin f‐PSC is successfully fabricated with a power conversion efficiency of 21.44% and a record power‐per‐weight value of 47.8 W g−1. A stretchable device is realized by laminating the ultrathin f‐PSC on a pre‐strained substrate, which shows stable performance when it is stretched up to 40%. The f‐PSC shows a high efficiency of 36.25% under room light intensity, suggesting great potential for indoor photovoltaic application. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley |
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| series | Advanced Science |
| spelling | doaj-art-34f9801dc34a4969bfa9839fb5d92eb12025-08-20T03:50:58ZengWileyAdvanced Science2198-38442025-07-011227n/an/a10.1002/advs.202415372Holistic Optimization toward Ultrathin Flexible Perovskite Solar Cells with High Efficiency and Mechanical RobustnessGuanqi Tang0Fangyuan Zheng1Jiajun Song2Qidong Tai3Jiong Zhao4Feng Yan5Research Institute of Frontier Science Southwest Jiaotong University Chengdu 610031 P. R. ChinaDepartment of Applied Physics Research Center for Organic Electronics The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong 999077 P. R. ChinaDepartment of Applied Physics Research Center for Organic Electronics The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong 999077 P. R. ChinaThe Institute of Technological Sciences Wuhan University Wuhan P. R. China 430072Department of Applied Physics Research Center for Organic Electronics The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong 999077 P. R. ChinaDepartment of Applied Physics Research Center for Organic Electronics The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong 999077 P. R. ChinaAbstract An ultrathin and flexible perovskite solar cell (f‐PSC) is highly desirable as a portable power source, while the rigidity of key components including perovskite and transparent electrode of a device leads to challenges in fabrication. Here, several approaches are developed to improve the mechanical flexibility and photovoltaic performance of ultrathin f‐PSCs. First, a two‐dimensional perovskite with low Young's modulus is introduced at the boundaries of perovskite films as a lubricant to release stress which is confirmed by in situ TEM characterization. Second, conductive PEDOT:PSS doped with sucralose is used as a transparent electrode to enhance the mechanical flexibility and photovoltaic performance of the device. Third, an ultrathin PET substrate is employed to shift the neutral plane into the perovskite film which further improves the mechanical flexibility of devices. Consequently, an ultrathin f‐PSC is successfully fabricated with a power conversion efficiency of 21.44% and a record power‐per‐weight value of 47.8 W g−1. A stretchable device is realized by laminating the ultrathin f‐PSC on a pre‐strained substrate, which shows stable performance when it is stretched up to 40%. The f‐PSC shows a high efficiency of 36.25% under room light intensity, suggesting great potential for indoor photovoltaic application.https://doi.org/10.1002/advs.202415372lightweightmechanical robustnessPEDOT:PSS electrodestrain releaseultrathin perovskite solar cells |
| spellingShingle | Guanqi Tang Fangyuan Zheng Jiajun Song Qidong Tai Jiong Zhao Feng Yan Holistic Optimization toward Ultrathin Flexible Perovskite Solar Cells with High Efficiency and Mechanical Robustness Advanced Science lightweight mechanical robustness PEDOT:PSS electrode strain release ultrathin perovskite solar cells |
| title | Holistic Optimization toward Ultrathin Flexible Perovskite Solar Cells with High Efficiency and Mechanical Robustness |
| title_full | Holistic Optimization toward Ultrathin Flexible Perovskite Solar Cells with High Efficiency and Mechanical Robustness |
| title_fullStr | Holistic Optimization toward Ultrathin Flexible Perovskite Solar Cells with High Efficiency and Mechanical Robustness |
| title_full_unstemmed | Holistic Optimization toward Ultrathin Flexible Perovskite Solar Cells with High Efficiency and Mechanical Robustness |
| title_short | Holistic Optimization toward Ultrathin Flexible Perovskite Solar Cells with High Efficiency and Mechanical Robustness |
| title_sort | holistic optimization toward ultrathin flexible perovskite solar cells with high efficiency and mechanical robustness |
| topic | lightweight mechanical robustness PEDOT:PSS electrode strain release ultrathin perovskite solar cells |
| url | https://doi.org/10.1002/advs.202415372 |
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