Oleksandr Stroyuk, Oleksandra Raievska, Sachin Kinge, Jens Hauch, Christoph J. Brabec. "Lead-Free Double Cs
                    <sub>2</sub>
                    Ag(Bi,Sb)(Br,I)
                    <sub>6</sub>
                    Perovskites: Going below 1.8 eV Bandgap by Anion Exchange and Solid-State Reactions." Journal of the American Chemical Society (2026). https://doi.org/10.1021/jacs.6c07190