Flexible Perovskite Photovoltaic Modules and Solar Cells Based on Atomic Layer Deposited Compact Layers and UV‐Irradiated TiO2 Scaffolds on Plastic Substrates

Recently, research on hybrid organometal halide perovskites for photovoltaic applications has delivered impressive growth in power conversion effi ciencies (PCEs) with a current certifi ed record of 17.9% and growing. [ 1–6 ] Key advantages of perovskites devices, together with high PCEs, are represented by the ease of the solution processing steps and their low temperature (<140 °C). [ 7,8 ] These values enable the fabrication on plastic substrates, [ 9 ] compatible with a continuous roll-toroll manufacturing which can potentially contribute to dramatically lower the production costs of large area modules. [ 10 ] Moreover, fl exible devices can also be conformed to curved surfaces to enhance power conversion densities. [ 11,12 ]

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