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. 2019 Jun 27;10:2818. doi: 10.1038/s41467-019-10612-3

Fig. 2.

Fig. 2

Perovskite films processed from precursors with different component ratios. ad XRD patterns (a), light-intensity-dependent PLQEs (b), PL decays (c) and SEM images (d) of thermal annealed perovskite films processed from precursors with different x values (x = 1.5, 2.0, 2.5 and 3.0). The scale bars in the SEM images are 1 µm