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Enhancing Jsc of solar cells consisting of mixed metal perovskite, MASn0.5Pb0.5I3 (SnPb PVK), is reported. The SnPb PVK was prepared from Pbt/SnL· mixture or SnI2(DMSO)2/PbI2(DMSO)2 mixture, where these PVK are abbreviated as SnPb-A PVK and SnPb-B PVK, respectively. Urbach energy's sharpness factor (σ) for SnPb-B PVK was 1.5 which was higher than 0.5 for SnPb-A PVK, suggesting that the SnPb-B PVK...
We found that the Sn halide perovskite became stable in air when Pb halide perovskite was added. In this report we discuss photovoltaic performances for the binary MASnPbI (MA:methylammonium) perovskite solar cells (4.2% efficiency) with gradient structure from the bottom to the top. In addition, we also reported organic amine free-CsPbI solar cells with about 2–4 % efficiency. Urbach energy measurement...
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