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 |
Metadatos
Título
Blade Coating High-Quality Formamidinium–Cesium Lead Halide Perovskites with Green Solvent for Efficient and Stable Solar CellsAutoría
Fecha de publicación
2022Editor
WileyISSN
2367-198XCita bibliográfica
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. 2200737Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://onlinelibrary.wiley.com/doi/full/10.1002/solr.202200737Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
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. [-]
Publicado en
Solar RRL, 2022, vol. 6, núm. 12, p. 2200737Entidad financiadora
Project on Collaborative Innovation and Environmental Construction Platform of Guangdong Province | Chinese Academy of Sciences
Código del proyecto o subvención
2018A050506067 | XDA 21061001
Título del proyecto o subvención
Transformational Technologies for Clean Energy and Demonstration
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© 2022 Wiley-VCH GmbH
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