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

Fig. 4.

Fig. 4

Schematic illustration of perovskite (x = 2.5) crystallization on different substrates. a, b The as deposited perovskite precursor complexes on ZnO/PEIE (a) and on TiOx/PEIE or SnO2/PEIE (b) substrates. ce The thermal annealed perovskite films on ZnO/PEIE (c), SnO2/PEIE (d) and TiOx/PEIE (e) substrates, respectively