Figure 5: Humidity stability of as-prepared film. | Nature Communications

Figure 5: Humidity stability of as-prepared film.

From: Nonstoichiometric acid–base reaction as reliable synthetic route to highly stable CH3NH3PbI3 perovskite film

Figure 5

(a) X-ray diffraction patterns of control perovskite film before and during degradation. (b) SEM micrograph of control perovskite film after 7 days degradation. (c) X-ray diffraction patterns of HPbI3 before and during degradation. (d) SEM micrograph of HPbI3 after 21 days degradation. (e) X-ray diffraction patterns of perovskite by NABR before and during degradation. (f) SEM micrograph of perovskite by NABR after 56 days degradation. Notes: the films were deposited on FTO glass and exposed to 65% humidity in a cabinet containing water in a beaker. Scale bar, 30 μm.

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