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p-Type Layer Engineering of Hybrid Metal halide Perovskite Photovoltiacs

NiO and its doped forms have been the most widely used p-type layers in hybrid perovskite solar cells. Here we present a facile approach towards the growth of scaffolded NiO using chemical bath deposition, which is suitable for making hybrid perovskite solar cells with >16% efficiency and fill factors of up to 85%.