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  • Influence of Thermal Proces...
    Saliba, Michael; Tan, Kwan Wee; Sai, Hiroaki; Moore, David T; Scott, Trent; Zhang, Wei; Estroff, Lara A; Wiesner, Ulrich; Snaith, Henry J

    Journal of physical chemistry. C, 07/2014, Letnik: 118, Številka: 30
    Journal Article

    We investigate the thermally induced morphological and crystalline development of methylammonium lead mixed halide perovskite (CH3NH3PbI3–x Cl x ) thin films and photovoltaic device performance with meso-superstructured and planar heterojunction architectures. We observe that a short rapid thermal annealing at 130 °C leads to the growth of large micron-sized textured perovskite domains and improved the short circuit currents and power conversion efficiencies up to 13.5% for the planar heterojunction perovskite solar cells. This work highlights the criticality of controlling the thin film crystallization mechanism of hybrid perovskite materials for high-performing photovoltaic applications.