Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
The sequential deposition method, developed by Burschka et al. [1], has been widely used for the preparation of prototype perovskite solar cells [2]. However, several aspects of the kinetics of methylammonium lead iodide perovskite formation are still unknown to date. Our study reveals the various stages of the reaction using cathodo-luminescence and PL imaging, focusing on nucleation, which is of interest to control the resulting perovskite morphology [3, 4]; and photo-effects. We describe the kinetic behaviour of the system through modelling with solid state kinetic models identifying the Avrami models as the most suitable. The results aid in the optimization of the perovskite films for opto-electronic applications including solar cells.
[1] Burschka, J. et al. Sequential deposition as a route to high-performance perovskite-sensitized solar cells. Nature 499, 316-319 (2013).
[2] Gratzel, M. The light and shade of perovskite solar cells. Nature materials 13, 838-842 (2014).
[3] Salim, T. et al. Perovskite-based solar cells: impact of morphology and device architecture on device performance. J. Mater. Chem. A 3, 8943-8969 (2015).
[4] Sharenko, A. & Toney, M. F. Relationships between Lead Halide Perovskite Thin-Film Fabrication, Morphology, and Performance in Solar Cells. Journal of the American Chemical Society 138, 463-470 (2016).
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