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- W4385063874 abstract "With better light utilization, larger tolerance factor, and higher power conversion efficiency (PCE), the HC(NH2 )2+ (FA)-based perovskite is proven superior to the popular CH3 NH3+ (MA)- and Cs-based halide perovskites in solar cell applications. Unfortunately, limited by intrinsic defects within the FA-based perovskite films, the perovskite films can be easily transformed into a yellow δ-phase at room temperature in the fabrication process, a troublesome challenge for its further development. Here, ytterbium fluoride (YbF3 ) is introduced into the perovskite precursor for three objectives. First of all, the partial substitution of Yb3+ for Pb2+ in the perovskite lattice increases the tolerance factor of the perovskite lattice and facilitates the formation of the α phase. Second, YbF3 and DMSO in the solvent form a Lewis acid complex YbF3 ·DMSO, which can passivate the perovskite film, reduce defects, and improve device stability. Consequently, the YbF3 modified Perovskite solar cell exhibits a champion conversion efficiency of 24.53% and still maintains 90% of its initial efficiency after 60 days of air exposure under 30% relative humidity." @default.
- W4385063874 created "2023-07-23" @default.
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- W4385063874 date "2023-07-21" @default.
- W4385063874 modified "2023-10-14" @default.
- W4385063874 title "Stable and High‐Efficiency Perovskite Solar Cells Using Effective Additive Ytterbium Fluoride" @default.
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- W4385063874 doi "https://doi.org/10.1002/smll.202303017" @default.
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