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    The power conversion efficiency of perovskite solar cells has increased from 9% in 2012 to over 22% in 2018, making it the fastest improving solar technology in history. The basic architecture of perovskite-based devs is similar across the field: while there are common material chos for each layer, part of the broad range of perovskite

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    Perovskites of the general formula ABX 3 may be regarded as derived from the ReO 3 structure as shown in Fig. 1.The BX 3 frame in the perovskite is similar to that in ReO 3 structure consisting of er-shared BX 6 octahedra. The large A cation occupies the body center, 12-coordinate position. In an ideal cubic perovskite structure, where the atoms are just touching one another, the B–X

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    The perovskites systems with their high selectivity for O 2 and H 2, related to vacancies in the crystalline structures, are introducing a new transport mechanism which makes them very promising materials for potential use as dense ceramic membranes in gas separation, high-temperature fuel cells, and membrane reactors. Recently, perovskite-type

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    Recent reports have shown that the chemical versatility of these systems can be used to tune the optical bandgap of lead-halide perovskites over the visible range, i.e. by and changing the organic or halide part (Link to Adityas JPCL , J. Phys. Chem. Lett., 2014, 5 (15), pp 2501–2505, DOI: 10.1021/jz501332v).

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