A crystal capping layer for formation of black-phase FAPbI3 perovskite in humid air
Editor’s summaryGrowth of the photoactive black phase of formamidinium lead iodide (α-FAPbI3) usually requires dimethyl sulfoxide solvent, but the hygroscopic nature of this chemical also promotes water-induced degradation to the photoinactive phase. Zou et al. showed that a larger chlorinated organ...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2024-07, Vol.385 (6705), p.161-167 |
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| creator | Zou, Yu Yu, Wenjin Guo, Haoqing Li, Qizhi Li, Xiangdong Li, Liang Liu, Yueli Wang, Hantao Tang, Zhenyu Yang, Shuang Chen, Yanrun Qu, Bo Gao, Yunan Chen, Zhijian Wang, Shufeng Zhang, Dongdong Chen, Yihua Chen, Qi Zakeeruddin, Shaik M Peng, Yingying Zhou, Huanping Gong, Qihuang Wei, Mingyang Grätzel, Michael Xiao, Lixin |
| description | Editor’s summaryGrowth of the photoactive black phase of formamidinium lead iodide (α-FAPbI3) usually requires dimethyl sulfoxide solvent, but the hygroscopic nature of this chemical also promotes water-induced degradation to the photoinactive phase. Zou et al. showed that a larger chlorinated organic molecule can form a hydrophobic capping layer that enables perovskite crystallization under humid conditions by protecting growing crystallites from water. Solar cells were fabricated across a relative humidity range of 20 to 60% and reached power conversion efficiencies of 23.4% at 80% relative humidity. An unencapsulated device retained 96% of its initial performance in humid air after 500 hours of illumination at maximum power point operation. —Phil Szuromi |
| doi_str_mv | 10.1126/science.adn9646 |
| format | Article |
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Zou et al. showed that a larger chlorinated organic molecule can form a hydrophobic capping layer that enables perovskite crystallization under humid conditions by protecting growing crystallites from water. Solar cells were fabricated across a relative humidity range of 20 to 60% and reached power conversion efficiencies of 23.4% at 80% relative humidity. An unencapsulated device retained 96% of its initial performance in humid air after 500 hours of illumination at maximum power point operation. —Phil Szuromi</description><identifier>ISSN: 0036-8075</identifier><identifier>ISSN: 1095-9203</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.adn9646</identifier><language>eng</language><publisher>Washington: The American Association for the Advancement of Science</publisher><subject>Capping ; Crystal growth ; Crystallites ; Crystallization ; Crystals ; Dimethyl sulfoxide ; Energy conversion efficiency ; Hydrophobicity ; Iodides ; Maximum power ; Organic chemistry ; Perovskites ; Photovoltaic cells ; Relative humidity ; Solar cells</subject><ispartof>Science (American Association for the Advancement of Science), 2024-07, Vol.385 (6705), p.161-167</ispartof><rights>Copyright © 2024 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. 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| ispartof | Science (American Association for the Advancement of Science), 2024-07, Vol.385 (6705), p.161-167 |
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| subjects | Capping Crystal growth Crystallites Crystallization Crystals Dimethyl sulfoxide Energy conversion efficiency Hydrophobicity Iodides Maximum power Organic chemistry Perovskites Photovoltaic cells Relative humidity Solar cells |
| title | A crystal capping layer for formation of black-phase FAPbI3 perovskite in humid air |
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