{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["14(1)"],"submitter":["Wen J"],"funding":["National Natural Science Foundation of China","Natural Science Foundation of Jiangsu Province"],"pubmed_abstract":["Light-induced halide segregation constrains the photovoltaic performance and stability of wide-bandgap perovskite solar cells and tandem cells. The implementation of an intermixed two-dimensional/three-dimensional heterostructure via solution post-treatment is a typical strategy to improve the efficiency and stability of perovskite solar cells. However, owing to the composition-dependent sensitivity of surface reconstruction, the conventional solution post-treatment is suboptimal for methylammonium-free and cesium/bromide-enriched wide-bandgap PSCs. To address this, we develop a generic three-dimensional to two-dimensional perovskite conversion approach to realize a preferential growth of wider dimensionality (n ≥ 2) atop wide-bandgap perovskite layers (1.78 eV). This technique involves depositing a well-defined MAPbI<sub>3</sub> thin layer through a vapor-assisted two-step process, followed by its conversion into a two-dimensional structure. Such a two-dimensional/three-dimensional heterostructure enables suppressed light-induced halide segregation, reduced non-radiative interfacial recombination, and facilitated charge extraction. The wide-bandgap perovskite solar cells demonstrate a champion power conversion efficiency of 19.6% and an open-circuit voltage of 1.32 V. By integrating with the thermal-stable FAPb<sub>0.5</sub>Sn<sub>0.5</sub>I<sub>3</sub> narrow-bandgap perovskites, our all-perovskite tandem solar cells exhibit a stabilized PCE of 28.1% and retain 90% of the initial performance after 855 hours of continuous 1-sun illumination."],"journal":["Nature communications"],"pagination":["7118"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10628126"],"repository":["biostudies-literature"],"pubmed_title":["Heterojunction formed via 3D-to-2D perovskite conversion for photostable wide-bandgap perovskite solar cells."],"pmcid":["PMC10628126"],"pubmed_authors":["Wan S","Liu Y","Wen J","Zheng X","Lin R","Tan H","Wu P","Tian Y","Luo H","Li K","Li L","Zhao Y"],"additional_accession":[]},"is_claimable":false,"name":"Heterojunction formed via 3D-to-2D perovskite conversion for photostable wide-bandgap perovskite solar cells.","description":"Light-induced halide segregation constrains the photovoltaic performance and stability of wide-bandgap perovskite solar cells and tandem cells. The implementation of an intermixed two-dimensional/three-dimensional heterostructure via solution post-treatment is a typical strategy to improve the efficiency and stability of perovskite solar cells. However, owing to the composition-dependent sensitivity of surface reconstruction, the conventional solution post-treatment is suboptimal for methylammonium-free and cesium/bromide-enriched wide-bandgap PSCs. To address this, we develop a generic three-dimensional to two-dimensional perovskite conversion approach to realize a preferential growth of wider dimensionality (n ≥ 2) atop wide-bandgap perovskite layers (1.78 eV). This technique involves depositing a well-defined MAPbI<sub>3</sub> thin layer through a vapor-assisted two-step process, followed by its conversion into a two-dimensional structure. Such a two-dimensional/three-dimensional heterostructure enables suppressed light-induced halide segregation, reduced non-radiative interfacial recombination, and facilitated charge extraction. The wide-bandgap perovskite solar cells demonstrate a champion power conversion efficiency of 19.6% and an open-circuit voltage of 1.32 V. By integrating with the thermal-stable FAPb<sub>0.5</sub>Sn<sub>0.5</sub>I<sub>3</sub> narrow-bandgap perovskites, our all-perovskite tandem solar cells exhibit a stabilized PCE of 28.1% and retain 90% of the initial performance after 855 hours of continuous 1-sun illumination.","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023 Nov","modification":"2025-04-05T10:23:29.795Z","creation":"2025-04-05T10:23:29.795Z"},"accession":"S-EPMC10628126","cross_references":{"pubmed":["37932289"],"doi":["10.1038/s41467-023-43016-5"]}}