Multistage Regulation Strategy via Fluorine‐Rich Small Molecules for Realizing High‐Performance Perovskite Solar Cells
Abstract Perovskite solar cells (PSCs) are an ideal candidate for next‐generation photovoltaic applications but face many challenges for their wider application, including uncontrolled fast crystallization, trap‐assisted nonradiative recombination, and inefficient charge transport. Herein, a multist...
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Wiley
2025-02-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202412557 |
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| author | Xiong Chang Kunpeng Li Yong Han Guohua Wang Zhishan Li Dongfang Li Fashe Li Xing Zhu Hua Wang Jiangzhao Chen Tao Zhu |
| author_facet | Xiong Chang Kunpeng Li Yong Han Guohua Wang Zhishan Li Dongfang Li Fashe Li Xing Zhu Hua Wang Jiangzhao Chen Tao Zhu |
| author_sort | Xiong Chang |
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| description | Abstract Perovskite solar cells (PSCs) are an ideal candidate for next‐generation photovoltaic applications but face many challenges for their wider application, including uncontrolled fast crystallization, trap‐assisted nonradiative recombination, and inefficient charge transport. Herein, a multistage regulation (MSR) strategy for addressing these challenges is proposed via the introduction of fluorine‐rich small molecules with multiple active points (i.e., 1‐[Bis(trifluoromethanesulfonyl)methyl]‐ 2,3,4,5,6‐pentafluorobenzene (TFSP)) into the precursor solution of the perovskite film. The addition of TFSP effectively delays and regulates the crystallization and growth process of the perovskite film for larger grains and fewer defects, and it effectively improves the coverage of self‐assembled molecules for efficient charge transport. The multiple active points of TFSP induce a strong binding affinity with uncoordinated defects in the perovskite film. Moreover, the high fluorine content of TFSP induces strong electronegativity to establish a high binding strength between the perovskite film and electron transport layer. Finally, PSCs prepared by the MSR strategy demonstrated an optimal power conversion efficiency (PCE) of 25.46% and maintained 91.16% of the initial PCE under nonpackaged air conditions and at a relative humidity of 45% after 3000 h. |
| format | Article |
| id | doaj-art-bb7a00d27fec414494597611f4aa8a83 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Wiley |
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| series | Advanced Science |
| spelling | doaj-art-bb7a00d27fec414494597611f4aa8a832025-02-04T13:14:54ZengWileyAdvanced Science2198-38442025-02-01125n/an/a10.1002/advs.202412557Multistage Regulation Strategy via Fluorine‐Rich Small Molecules for Realizing High‐Performance Perovskite Solar CellsXiong Chang0Kunpeng Li1Yong Han2Guohua Wang3Zhishan Li4Dongfang Li5Fashe Li6Xing Zhu7Hua Wang8Jiangzhao Chen9Tao Zhu10Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 P. R. ChinaFaculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 P. R. ChinaChina Three Gorges Yunnan Energy Investment Co., Ltd Lijiang 650000 P. R. ChinaChina Three Gorges Yunnan Energy Investment Co., Ltd Lijiang 650000 P. R. ChinaFaculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 P. R. ChinaFaculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 P. R. ChinaFaculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 P. R. ChinaFaculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 P. R. ChinaFaculty of Metallurgical and Energy Engineering/State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming 650093 P. R. ChinaFaculty of Materials Science and Engineering Kunming University of Science and Technology Kunming 650093 P. R. ChinaFaculty of Metallurgical and Energy Engineering/Yunnan Key Laboratory of Clean Energy and Energy Storage Kunming University of Science and Technology Kunming 650093 P. R. ChinaAbstract Perovskite solar cells (PSCs) are an ideal candidate for next‐generation photovoltaic applications but face many challenges for their wider application, including uncontrolled fast crystallization, trap‐assisted nonradiative recombination, and inefficient charge transport. Herein, a multistage regulation (MSR) strategy for addressing these challenges is proposed via the introduction of fluorine‐rich small molecules with multiple active points (i.e., 1‐[Bis(trifluoromethanesulfonyl)methyl]‐ 2,3,4,5,6‐pentafluorobenzene (TFSP)) into the precursor solution of the perovskite film. The addition of TFSP effectively delays and regulates the crystallization and growth process of the perovskite film for larger grains and fewer defects, and it effectively improves the coverage of self‐assembled molecules for efficient charge transport. The multiple active points of TFSP induce a strong binding affinity with uncoordinated defects in the perovskite film. Moreover, the high fluorine content of TFSP induces strong electronegativity to establish a high binding strength between the perovskite film and electron transport layer. Finally, PSCs prepared by the MSR strategy demonstrated an optimal power conversion efficiency (PCE) of 25.46% and maintained 91.16% of the initial PCE under nonpackaged air conditions and at a relative humidity of 45% after 3000 h.https://doi.org/10.1002/advs.202412557charge transportcrystallization controlmultistage regulationperovskite solar cells |
| spellingShingle | Xiong Chang Kunpeng Li Yong Han Guohua Wang Zhishan Li Dongfang Li Fashe Li Xing Zhu Hua Wang Jiangzhao Chen Tao Zhu Multistage Regulation Strategy via Fluorine‐Rich Small Molecules for Realizing High‐Performance Perovskite Solar Cells Advanced Science charge transport crystallization control multistage regulation perovskite solar cells |
| title | Multistage Regulation Strategy via Fluorine‐Rich Small Molecules for Realizing High‐Performance Perovskite Solar Cells |
| title_full | Multistage Regulation Strategy via Fluorine‐Rich Small Molecules for Realizing High‐Performance Perovskite Solar Cells |
| title_fullStr | Multistage Regulation Strategy via Fluorine‐Rich Small Molecules for Realizing High‐Performance Perovskite Solar Cells |
| title_full_unstemmed | Multistage Regulation Strategy via Fluorine‐Rich Small Molecules for Realizing High‐Performance Perovskite Solar Cells |
| title_short | Multistage Regulation Strategy via Fluorine‐Rich Small Molecules for Realizing High‐Performance Perovskite Solar Cells |
| title_sort | multistage regulation strategy via fluorine rich small molecules for realizing high performance perovskite solar cells |
| topic | charge transport crystallization control multistage regulation perovskite solar cells |
| url | https://doi.org/10.1002/advs.202412557 |
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