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- W4380870915 abstract "Tin-lead (Sn-Pb) perovskite solar cells (PSCs) with near-ideal bandgap still lag behind the pure lead PSCs. Disordered heterojunctions caused by inhomogeneous Sn/Pb ratio in the binary perovskite film induce large recombination loss. Here, an Sn-Pb perovskite film is reported with homogeneous component and energy distribution by introducing hydrazine sulfate (HS) in Sn perovskite precursor. HS can form hydrogen bond network and coordinate with FASnI3 thus no longer bond with Pb2+ , which reduces the crystallization rate of tin perovskite to the level of lead analog. The strong bonding between SO42- and Sn2+ can also suppress its oxidation. As a result, the Sn-Pb PSCs with HS exhibit a significantly improved VOC of 0.91 V along with a high efficiency of 23.17%. Meanwhile, the hydrogen bond interaction network, strong bonding between Sn2+ and sulfate ion also improve the thermal, storage, and air stability of resulting devices." @default.
- W4380870915 created "2023-06-17" @default.
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- W4380870915 date "2023-07-28" @default.
- W4380870915 modified "2023-10-14" @default.
- W4380870915 title "Component Distribution Regulation in Sn‐Pb Perovskite Solar Cells through Selective Molecular Interaction" @default.
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- W4380870915 doi "https://doi.org/10.1002/adma.202303674" @default.
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