FA0.8MA0.2SnxPb1-xI3 Hybrid Perovskite Solid Solution: Toward Environmentally Friendly, Stable, and Near-IR Absorbing Materials.

We report the first investigation addressing the synthesis and characterization of the FA0.8MA0.2SnxPb1-xI3 solid solution showing a complete solubility of Sn on the Pb-site leading to cubic single-phase materials. The explored composition shows excellent phase stability and absorbance in the near-IR spectral region.