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. 2017 Oct 25;7:14025. doi: 10.1038/s41598-017-13172-y

Figure 1.

Figure 1

Unit cells of the considered cubic metal halide perovskites CsBX3 (B = Sn, Ge; X = I, Br, Cl) as compared with Pb-based compounds CsPbX3 (X = I, Br, Cl). Replacement of halogen atoms is showing from left to right while the replacement of Pb is showing from top to bottom. The molecular models are optimized by DFT calculations.