Stabilizer-free pure α-phase FAPbI3 perovskite through seed-assisted growth yields efficient photovoltaics
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The α-phase of formamidinium lead iodide (α-FAPbI3) perovskite has a promising bandgap for efficient single-junction photovoltaics. However, its large A-site FA+ cation destabilizes the perovskite lattice, favoring transformation into non-perovskite δ-phase... ...
