Dual-functional passivation on highly-efficient air-processed FAPbI₃ perovskite solar cells fabricated under high humidity without auxiliary equipment
Formamidinium lead triiodide (FAPbI3) perovskite has garnered significant attention due to its narrow bandgap and excellent thermal stability. However, the photo-active α-phase FAPbI3 suffers the poor structural stability, easily transforming to photo-inactive δ-phase FAPbI3 at room temperature, a p...
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Elsevier
2025-01-01
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| Series: | Applied Surface Science Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666523924001119 |
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| author | Bo-Tau Liu His-Sheng Su I-Ru Chen Rong-Ho Lee Yi-Fang Su Kai-Ting Sun Shoaib Siddique |
| author_facet | Bo-Tau Liu His-Sheng Su I-Ru Chen Rong-Ho Lee Yi-Fang Su Kai-Ting Sun Shoaib Siddique |
| author_sort | Bo-Tau Liu |
| collection | DOAJ |
| description | Formamidinium lead triiodide (FAPbI3) perovskite has garnered significant attention due to its narrow bandgap and excellent thermal stability. However, the photo-active α-phase FAPbI3 suffers the poor structural stability, easily transforming to photo-inactive δ-phase FAPbI3 at room temperature, a process that is accelerated by the moisture. While numerous methods have been proposed to address this issue, most efforts have relied on glove-box conditions, substrate heating, or air-knife flow. To date, few studies have reported a strategy for fabricating highly efficient FAPbI3 perovskite solar cells (PSCs) under humid conditions. In this study, we are the first to demonstrate the fabrication of FAPbI3 PSCs using a one-step solution deposition method in a relative humidity of 70 % without the need for auxiliary processes or equipment, achieved through the addition of a highly volatile solvent and the incorporation of methacrylic acid (MAA) into the perovskite layer. The addition of the volatile solvent enables the fabrication of FAPbI3 perovskite in a high-moisture environment without adversely affecting the phase transformation process. The MAA incorporation not only decreases pinholes in the perovskite layer but also passivates the deep-level defects through the interaction of carboxyl groups with formamidinium cations, resulting in a low trap-state density, high charge recombination resistance, and long charge lifetime. The thermal treatment used for phase transformation of the perovskite also induces the polymerization of MAA, which further improves the long-term stability of PSCs. This dual-functional passivation approach enables PSCs to achieve high power conversion efficiency, surpassing many previously reported values for PSCs fabricated without additional processes or specialized equipment, even under highly humid conditions. |
| format | Article |
| id | doaj-art-ce21c9bd52a04252819b793861b3e379 |
| institution | Kabale University |
| issn | 2666-5239 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Applied Surface Science Advances |
| spelling | doaj-art-ce21c9bd52a04252819b793861b3e3792025-01-29T05:02:07ZengElsevierApplied Surface Science Advances2666-52392025-01-0125100683Dual-functional passivation on highly-efficient air-processed FAPbI₃ perovskite solar cells fabricated under high humidity without auxiliary equipmentBo-Tau Liu0His-Sheng Su1I-Ru Chen2Rong-Ho Lee3Yi-Fang Su4Kai-Ting Sun5Shoaib Siddique6Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan, ROC; Corresponding author.Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan, ROCDepartment of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan, ROCDepartment of Chemical Engineering, National Chung Hsing University, Taichung 40227, Taiwan, ROC; Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan City 320, TaiwanDepartment of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan, ROCDepartment of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan, ROCDepartment of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan, ROCFormamidinium lead triiodide (FAPbI3) perovskite has garnered significant attention due to its narrow bandgap and excellent thermal stability. However, the photo-active α-phase FAPbI3 suffers the poor structural stability, easily transforming to photo-inactive δ-phase FAPbI3 at room temperature, a process that is accelerated by the moisture. While numerous methods have been proposed to address this issue, most efforts have relied on glove-box conditions, substrate heating, or air-knife flow. To date, few studies have reported a strategy for fabricating highly efficient FAPbI3 perovskite solar cells (PSCs) under humid conditions. In this study, we are the first to demonstrate the fabrication of FAPbI3 PSCs using a one-step solution deposition method in a relative humidity of 70 % without the need for auxiliary processes or equipment, achieved through the addition of a highly volatile solvent and the incorporation of methacrylic acid (MAA) into the perovskite layer. The addition of the volatile solvent enables the fabrication of FAPbI3 perovskite in a high-moisture environment without adversely affecting the phase transformation process. The MAA incorporation not only decreases pinholes in the perovskite layer but also passivates the deep-level defects through the interaction of carboxyl groups with formamidinium cations, resulting in a low trap-state density, high charge recombination resistance, and long charge lifetime. The thermal treatment used for phase transformation of the perovskite also induces the polymerization of MAA, which further improves the long-term stability of PSCs. This dual-functional passivation approach enables PSCs to achieve high power conversion efficiency, surpassing many previously reported values for PSCs fabricated without additional processes or specialized equipment, even under highly humid conditions.http://www.sciencedirect.com/science/article/pii/S2666523924001119FAPbI3Solar cellHigh humidityMethacrylic acidDual-functional passivation |
| spellingShingle | Bo-Tau Liu His-Sheng Su I-Ru Chen Rong-Ho Lee Yi-Fang Su Kai-Ting Sun Shoaib Siddique Dual-functional passivation on highly-efficient air-processed FAPbI₃ perovskite solar cells fabricated under high humidity without auxiliary equipment Applied Surface Science Advances FAPbI3 Solar cell High humidity Methacrylic acid Dual-functional passivation |
| title | Dual-functional passivation on highly-efficient air-processed FAPbI₃ perovskite solar cells fabricated under high humidity without auxiliary equipment |
| title_full | Dual-functional passivation on highly-efficient air-processed FAPbI₃ perovskite solar cells fabricated under high humidity without auxiliary equipment |
| title_fullStr | Dual-functional passivation on highly-efficient air-processed FAPbI₃ perovskite solar cells fabricated under high humidity without auxiliary equipment |
| title_full_unstemmed | Dual-functional passivation on highly-efficient air-processed FAPbI₃ perovskite solar cells fabricated under high humidity without auxiliary equipment |
| title_short | Dual-functional passivation on highly-efficient air-processed FAPbI₃ perovskite solar cells fabricated under high humidity without auxiliary equipment |
| title_sort | dual functional passivation on highly efficient air processed fapbi₃ perovskite solar cells fabricated under high humidity without auxiliary equipment |
| topic | FAPbI3 Solar cell High humidity Methacrylic acid Dual-functional passivation |
| url | http://www.sciencedirect.com/science/article/pii/S2666523924001119 |
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