Figure 1.
Optimized structures of (a) MAPb0.25Sn0.75I3, (b) MA0.75Cs0.25Pb0.25Sn0.75I3, (c) MA0.50Cs0.50Pb0.25Sn0.75I3, and (d) MA0.25Cs0.75Pb0.25Sn0.75I3.
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