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. 2017 May 5;6(5):e16243. doi: 10.1038/lsa.2016.243

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Copyright © 2017 The Author(s)

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Photo-induced effects in perovskite films and devices. (a) Schematic illustration of light-dependent ion migration in perovskite MAPbI₃. (b) Photoluminescence spectra of the mixed perovskite MAPb(I_0.5Br_0.5)₃ after various illumination durations. (c) Photoluminescence spectra of the mixed perovskite MAPb(I_0.5Br_0.5)₃ after subsequent storage under dark conditions for 1 and 60 min. (d) Schematic plot of the Gibbs energy as a function of the doping concentration for MAPb(I_xBr_1−x)₃ under dark and light conditions. β (I4/mcm) represents Br doping in the tetragonal MAPbI₃ matrix, and α () represents I doping in the cubic MAPbBr₃ matrix. (e) Light-soaking stability tests under various illumination conditions. The devices were tested in an uncontaminated glove box at room temperature and were held at the maximum power point at 0.7 V, and the data were directly obtained from the steady-state values.

Inline graphic — Photo-induced effects in perovskite films and devices. (a) Schematic illustration of light-dependent ion migration in perovskite MAPbI₃. (b) Photoluminescence spectra of the mixed perovskite MAPb(I_0.5Br_0.5)₃ after various illumination durations. (c) Photoluminescence spectra of the mixed perovskite MAPb(I_0.5Br_0.5)₃ after subsequent storage under dark conditions for 1 and 60 min. (d) Schematic plot of the Gibbs energy as a function of the doping concentration for MAPb(I_xBr_1−x)₃ under dark and light conditions. β (I4/mcm) represents Br doping in the tetragonal MAPbI₃ matrix, and α () represents I doping in the cubic MAPbBr₃ matrix. (e) Light-soaking stability tests under various illumination conditions. The devices were tested in an uncontaminated glove box at room temperature and were held at the maximum power point at 0.7 V, and the data were directly obtained from the steady-state values.