Lead‐Free Perovskites: Lead‐Free Double Perovskite Cs2SnX6: Facile Solution Synthesis and Excellent Stability (Small 39/2019)

In article number 1901650, Jia Liang, Jun Lou, and co-workers synthesize lead-free double perovskite Cs2SnX6 (X = Br, I) with a well-defined vacancy-ordered defect-variant crystal structure via a facile hydrothermal method. The as-obtained perovskite displays excellent stability against moisture, light, and high-temperature.