Blade Coating High-Quality Formamidinium–Cesium Lead Halide Perovskites with Green Solvent for Efficient and Stable Solar Cells
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https://doi.org/10.1002/solr.202200737 |
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Title
Blade Coating High-Quality Formamidinium–Cesium Lead Halide Perovskites with Green Solvent for Efficient and Stable Solar CellsAuthor (s)
Date
2022Publisher
WileyISSN
2367-198XBibliographic citation
ZHENG, Yupeng, et al. Blade Coating High‐Quality Formamidinium–Cesium Lead Halide Perovskites with Green Solvent for Efficient and Stable Solar Cells. Solar RRL, 2022, vol. 6, núm. 12, p. 2200737Type
info:eu-repo/semantics/articlePublisher version
https://onlinelibrary.wiley.com/doi/full/10.1002/solr.202200737Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Perfecting large-area perovskite film coating technology remains a key challenge to commercialize perovskite solar cells. Herein, nontoxic dimethyl sulfoxide (DMSO) is recommended as the only solvent to fabricate ... [+]
Perfecting large-area perovskite film coating technology remains a key challenge to commercialize perovskite solar cells. Herein, nontoxic dimethyl sulfoxide (DMSO) is recommended as the only solvent to fabricate formamidinium (FA)–cesium lead halide perovskite by heat-assisted blade coating. DMSO effectively promotes the formation of α-phase crystals and improves the crystallinity. In addition, high substrate temperature is found to improve the film compactness, preferred facet orientation, and desired phase transition. Fast coating mode is adopted to inhibit ion migration and reduce the hysteresis of solar cells. Without any additives or surface treatments, the resulting perovskite film with chemical formula FA0.75Cs0.25PbI2.7Br0.3 shows smooth surface, dense grains, and excellent crystallinity. The corresponding solar cells achieve efficiencies of 20.2% and 17.1% with active areas of 0.1 and 1.0 cm2, respectively. The unencapsulated devices maintain ≈100% and 70% of their initial efficiencies after 500 h of storage in air with relative humidity of about 25% and heating at 85 °C, respectively. [-]
Is part of
Solar RRL, 2022, vol. 6, núm. 12, p. 2200737Funder Name
Project on Collaborative Innovation and Environmental Construction Platform of Guangdong Province | Chinese Academy of Sciences
Project code
2018A050506067 | XDA 21061001
Project title or grant
Transformational Technologies for Clean Energy and Demonstration
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© 2022 Wiley-VCH GmbH
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