Diluting Ionic Liquids with Small Functional Molecules of Polypropylene Carbonate to Boost the Photovoltaic Performance of Perovskite Solar Cells
It is necessary to overcome the relatively low conductivity of ionic liquids (ILs) caused by steric hindrance effects to improve their ability to passivate defects and inhibit ion migration to boost the photovoltaic performance of perovskite solar cells (PSCs). Herein, we designed and prepared a kin...
| Published in: | Molecules |
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| Main Authors: | , , , , , , , |
| Format: | Article |
| Language: | English |
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MDPI AG
2024-12-01
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| Online Access: | https://www.mdpi.com/1420-3049/29/24/6045 |
| _version_ | 1850028926084055040 |
|---|---|
| author | Shuo Yang Shaohua Chi Youshuai Qi Kaiyue Li Xiang Zhang Xinru Gao Lili Yang Jinghai Yang |
| author_facet | Shuo Yang Shaohua Chi Youshuai Qi Kaiyue Li Xiang Zhang Xinru Gao Lili Yang Jinghai Yang |
| author_sort | Shuo Yang |
| collection | DOAJ |
| container_title | Molecules |
| description | It is necessary to overcome the relatively low conductivity of ionic liquids (ILs) caused by steric hindrance effects to improve their ability to passivate defects and inhibit ion migration to boost the photovoltaic performance of perovskite solar cells (PSCs). Herein, we designed and prepared a kind of low-concentration 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF<sub>4</sub>) diluted with propylene carbonate (PC) via an ultrasonic technique (PC/IL). The decrease in the decomposition temperature related to the IL part and the increase in the sublimation temperature related to the PC part facilitated the use of PC/IL to effectively delay the crystallization process and passivate the defects in multiple ways to obtain high-quality perovskite films. Moreover, the increased conductivity of PC/IL and the more matched band alignment accelerated electron transport and collection. Finally, the MAPbI<sub>3</sub>- and CsMAFA-based PSCs achieved PCE values of 20.87% and 23.29%, respectively, and their stabilities were greatly improved. This work provides a promising approach to optimizing ILs to achieve multiple functions and boost the performance of PSCs. |
| format | Article |
| id | doaj-art-9e43d76e4c874cfbb6c52b88d8e41e21 |
| institution | Directory of Open Access Journals |
| issn | 1420-3049 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| spelling | doaj-art-9e43d76e4c874cfbb6c52b88d8e41e212025-08-20T00:36:52ZengMDPI AGMolecules1420-30492024-12-012924604510.3390/molecules29246045Diluting Ionic Liquids with Small Functional Molecules of Polypropylene Carbonate to Boost the Photovoltaic Performance of Perovskite Solar CellsShuo Yang0Shaohua Chi1Youshuai Qi2Kaiyue Li3Xiang Zhang4Xinru Gao5Lili Yang6Jinghai Yang7School of Materials Science and Engineering, Changchun University, Changchun 130022, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaSchool of Materials Science and Engineering, Changchun University, Changchun 130022, ChinaSchool of Materials Science and Engineering, Changchun University, Changchun 130022, ChinaSchool of Materials Science and Engineering, Changchun University, Changchun 130022, ChinaSchool of Materials Science and Engineering, Changchun University, Changchun 130022, ChinaKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaIt is necessary to overcome the relatively low conductivity of ionic liquids (ILs) caused by steric hindrance effects to improve their ability to passivate defects and inhibit ion migration to boost the photovoltaic performance of perovskite solar cells (PSCs). Herein, we designed and prepared a kind of low-concentration 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF<sub>4</sub>) diluted with propylene carbonate (PC) via an ultrasonic technique (PC/IL). The decrease in the decomposition temperature related to the IL part and the increase in the sublimation temperature related to the PC part facilitated the use of PC/IL to effectively delay the crystallization process and passivate the defects in multiple ways to obtain high-quality perovskite films. Moreover, the increased conductivity of PC/IL and the more matched band alignment accelerated electron transport and collection. Finally, the MAPbI<sub>3</sub>- and CsMAFA-based PSCs achieved PCE values of 20.87% and 23.29%, respectively, and their stabilities were greatly improved. This work provides a promising approach to optimizing ILs to achieve multiple functions and boost the performance of PSCs.https://www.mdpi.com/1420-3049/29/24/6045perovskite solar cellsionic liquidsphotovoltaic performancesynergistic effect |
| spellingShingle | Shuo Yang Shaohua Chi Youshuai Qi Kaiyue Li Xiang Zhang Xinru Gao Lili Yang Jinghai Yang Diluting Ionic Liquids with Small Functional Molecules of Polypropylene Carbonate to Boost the Photovoltaic Performance of Perovskite Solar Cells perovskite solar cells ionic liquids photovoltaic performance synergistic effect |
| title | Diluting Ionic Liquids with Small Functional Molecules of Polypropylene Carbonate to Boost the Photovoltaic Performance of Perovskite Solar Cells |
| title_full | Diluting Ionic Liquids with Small Functional Molecules of Polypropylene Carbonate to Boost the Photovoltaic Performance of Perovskite Solar Cells |
| title_fullStr | Diluting Ionic Liquids with Small Functional Molecules of Polypropylene Carbonate to Boost the Photovoltaic Performance of Perovskite Solar Cells |
| title_full_unstemmed | Diluting Ionic Liquids with Small Functional Molecules of Polypropylene Carbonate to Boost the Photovoltaic Performance of Perovskite Solar Cells |
| title_short | Diluting Ionic Liquids with Small Functional Molecules of Polypropylene Carbonate to Boost the Photovoltaic Performance of Perovskite Solar Cells |
| title_sort | diluting ionic liquids with small functional molecules of polypropylene carbonate to boost the photovoltaic performance of perovskite solar cells |
| topic | perovskite solar cells ionic liquids photovoltaic performance synergistic effect |
| url | https://www.mdpi.com/1420-3049/29/24/6045 |
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