Methylammonium‐Free Ink for Blade‐Coating of Pure‐Phase α‐FAPbI3 Perovskite Films in Air
Abstract The α‐c (α‐FAPbI3) has been extensively employed in the fabrication of high‐efficiency perovskite solar cells, yet heavily relied on multiple additives in upscalable fabrication in air. In this work, a simple α‐FAPbI3 ink is developed for the blade‐coating fabrication of phase‐pure α‐FAPbI3...
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Wiley
2024-12-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202410266 |
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| author | Jianbo Liu Jingwen Cao Meng Zhang Xiaoran Sun Tian Hou Xiangyu Yang Linhu Xiang Xin Liu Zhipeng Fu Yuelong Huang Feng Wang Wenhua Zhang Xiaojing Hao |
| author_facet | Jianbo Liu Jingwen Cao Meng Zhang Xiaoran Sun Tian Hou Xiangyu Yang Linhu Xiang Xin Liu Zhipeng Fu Yuelong Huang Feng Wang Wenhua Zhang Xiaojing Hao |
| author_sort | Jianbo Liu |
| collection | DOAJ |
| description | Abstract The α‐c (α‐FAPbI3) has been extensively employed in the fabrication of high‐efficiency perovskite solar cells, yet heavily relied on multiple additives in upscalable fabrication in air. In this work, a simple α‐FAPbI3 ink is developed for the blade‐coating fabrication of phase‐pure α‐FAPbI3 in ambient air free from any additives containing extrinsic ions. The introduction of 2‐imidazolidinone (IMD) to the FAPbI3 precursor inks leads to the formation of intermediate phases that change the phase transition pathway from δ‐FAPbI3 to α‐FAPbI3 by tilting the PbI6 octahedrons with strong coordination to Pb2+. Furthermore, the IMD ligands in the intermediate phase gradually escape from the perovskite film during the annealing, leaving a phase‐pure α‐FAPbI3 film vertically grown with large grains. Consequently, the small‐sized PSCs fabricated with blade‐coated α‐FAPbI3 film achieve an efficiency of up to 23.14%, and the corresponding mini‐module yields an efficiency of 19.66%. The device performance is among the highest reported for phase‐pure α‐FAPbI3 PSCs fabricated in the air without non‐native cations or chloride additives, offering a simple and robust fabrication approach of phase‐pure α‐FAPbI3 films for PV application. |
| format | Article |
| id | doaj-art-4dbf2fa2a566468f871ccc3bc508cd5d |
| institution | OA Journals |
| issn | 2198-3844 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-4dbf2fa2a566468f871ccc3bc508cd5d2025-08-20T02:33:42ZengWileyAdvanced Science2198-38442024-12-011146n/an/a10.1002/advs.202410266Methylammonium‐Free Ink for Blade‐Coating of Pure‐Phase α‐FAPbI3 Perovskite Films in AirJianbo Liu0Jingwen Cao1Meng Zhang2Xiaoran Sun3Tian Hou4Xiangyu Yang5Linhu Xiang6Xin Liu7Zhipeng Fu8Yuelong Huang9Feng Wang10Wenhua Zhang11Xiaojing Hao12School of New Energy and Materials Southwest Petroleum University Chengdu 610500 ChinaThe Australian Centre for Advanced Photovoltaics School of Photovoltaic and Renewable Energy Engineering University of New South Wales Sydney New South Wales 2052 AustraliaThe Australian Centre for Advanced Photovoltaics School of Photovoltaic and Renewable Energy Engineering University of New South Wales Sydney New South Wales 2052 AustraliaSchool of New Energy and Materials Southwest Petroleum University Chengdu 610500 ChinaSchool of New Energy and Materials Southwest Petroleum University Chengdu 610500 ChinaSchool of New Energy and Materials Southwest Petroleum University Chengdu 610500 ChinaSchool of New Energy and Materials Southwest Petroleum University Chengdu 610500 ChinaSchool of New Energy and Materials Southwest Petroleum University Chengdu 610500 ChinaSchool of New Energy and Materials Southwest Petroleum University Chengdu 610500 ChinaSchool of New Energy and Materials Southwest Petroleum University Chengdu 610500 ChinaCenter for Combustion Energy Department of Energy and Power Engineering Tsinghua University Beijing 100084 ChinaYunnan Key Laboratory of Carbon Neutrality and Green Low‐carbon Technologies Yunnan Key Laboratory for Micro/Nano Materials & Technology Southwest United Graduate School School of Materials and Energy Yunnan University Kunming 650504 ChinaThe Australian Centre for Advanced Photovoltaics School of Photovoltaic and Renewable Energy Engineering University of New South Wales Sydney New South Wales 2052 AustraliaAbstract The α‐c (α‐FAPbI3) has been extensively employed in the fabrication of high‐efficiency perovskite solar cells, yet heavily relied on multiple additives in upscalable fabrication in air. In this work, a simple α‐FAPbI3 ink is developed for the blade‐coating fabrication of phase‐pure α‐FAPbI3 in ambient air free from any additives containing extrinsic ions. The introduction of 2‐imidazolidinone (IMD) to the FAPbI3 precursor inks leads to the formation of intermediate phases that change the phase transition pathway from δ‐FAPbI3 to α‐FAPbI3 by tilting the PbI6 octahedrons with strong coordination to Pb2+. Furthermore, the IMD ligands in the intermediate phase gradually escape from the perovskite film during the annealing, leaving a phase‐pure α‐FAPbI3 film vertically grown with large grains. Consequently, the small‐sized PSCs fabricated with blade‐coated α‐FAPbI3 film achieve an efficiency of up to 23.14%, and the corresponding mini‐module yields an efficiency of 19.66%. The device performance is among the highest reported for phase‐pure α‐FAPbI3 PSCs fabricated in the air without non‐native cations or chloride additives, offering a simple and robust fabrication approach of phase‐pure α‐FAPbI3 films for PV application.https://doi.org/10.1002/advs.2024102662‐imidazolidinoneblade‐coatingperovskite inkperovskite modulesphase‐transition |
| spellingShingle | Jianbo Liu Jingwen Cao Meng Zhang Xiaoran Sun Tian Hou Xiangyu Yang Linhu Xiang Xin Liu Zhipeng Fu Yuelong Huang Feng Wang Wenhua Zhang Xiaojing Hao Methylammonium‐Free Ink for Blade‐Coating of Pure‐Phase α‐FAPbI3 Perovskite Films in Air Advanced Science 2‐imidazolidinone blade‐coating perovskite ink perovskite modules phase‐transition |
| title | Methylammonium‐Free Ink for Blade‐Coating of Pure‐Phase α‐FAPbI3 Perovskite Films in Air |
| title_full | Methylammonium‐Free Ink for Blade‐Coating of Pure‐Phase α‐FAPbI3 Perovskite Films in Air |
| title_fullStr | Methylammonium‐Free Ink for Blade‐Coating of Pure‐Phase α‐FAPbI3 Perovskite Films in Air |
| title_full_unstemmed | Methylammonium‐Free Ink for Blade‐Coating of Pure‐Phase α‐FAPbI3 Perovskite Films in Air |
| title_short | Methylammonium‐Free Ink for Blade‐Coating of Pure‐Phase α‐FAPbI3 Perovskite Films in Air |
| title_sort | methylammonium free ink for blade coating of pure phase α fapbi3 perovskite films in air |
| topic | 2‐imidazolidinone blade‐coating perovskite ink perovskite modules phase‐transition |
| url | https://doi.org/10.1002/advs.202410266 |
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