Formation of a Mixed Valence Sn<sub>3</sub>F<sub>8</sub> Phase May Explain the SnF<sub>2</sub> Stabilizing Role in Tin-Halide Perovskites
Daniele Meggiolaro, Luca Gregori, Filippo De Angelis
Abstract
SnF 2 is a common additive stabilizing tin-halide perovskites. We propose that this effect is due to formation of a mixed valence Sn 3 F 8 phase which sequesters oxidized species from the perovskite environment.
Topics & Concepts
HalideTinValence (chemistry)Perovskite (structure)Phase (matter)ChemistryChemical physicsInorganic chemistryMaterials scienceCrystallographyMetallurgyOrganic chemistryPerovskite Materials and ApplicationsThermal Expansion and Ionic ConductivityAdvancements in Solid Oxide Fuel Cells