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Highly Robust Transparent and Conductive Gas Diffusion Barriers Based on Tin Oxide

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      Most cited references 33

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      Is Open Access

      Atomistic origins of high-performance in hybrid halide perovskite solar cells

      The performance of organometallic perovskite solar cells has rapidly surpassed that of both conventional dye-sensitised and organic photovoltaics. High power conversion efficiency can be realised in both mesoporous and thin-film device architectures. We address the origin of this success in the context of the materials chemistry and physics of the bulk perovskite as described by electronic structure calculations. In addition to the basic optoelectronic properties essential for an efficient photovoltaic device (spectrally suitable band gap, high optical absorption, low carrier effective masses), the materials are structurally and compositionally flexible. As we show, hybrid perovskites exhibit spontaneous electric polarisation; we also suggest ways in which this can be tuned through judicious choice of the organic cation. The presence of ferroelectric domains will result in internal junctions that may aid separation of photoexcited electron and hole pairs, and reduction of recombination through segregation of charge carriers. The combination of high dielectric constant and low effective mass promotes both Wannier-Mott exciton separation and effective ionisation of donor and acceptor defects. The photoferroic effect could be exploited in nanostructured films to generate a higher open circuit voltage and may contribute to the current-voltage hysteresis observed in perovskite solar cells.
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        The surface and materials science of tin oxide

         M BATZILL,  U. Diebold (2005)
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          Highly efficient simplified organic light emitting diodes

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            Author and article information

            Affiliations
            [1 ]Institute of Electronic Devices; University of Wuppertal; Rainer-Gruenter-Str. 21 42119 Wuppertal Germany
            [2 ]Electronic Materials and Nanoelectronics; Ruhr-Universität Bochum; Universitätsstr. 150 44801 Bochum Germany
            [3 ]Chair of Large Area Optoelectronics; University of Wuppertal; Rainer-Gruenter-Str. 21 Wuppertal 42119 Germany
            Journal
            Advanced Materials
            Adv. Mater.
            Wiley
            09359648
            October 2015
            October 2015
            August 27 2015
            : 27
            : 39
            : 5961-5967
            10.1002/adma.201502973
            © 2015

            http://doi.wiley.com/10.1002/tdm_license_1.1

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