Highly Luminescent Transparent Cs<sub>2</sub>Ag<sub><i>x</i></sub>Na<sub>1–<i>x</i></sub>Bi<sub><i>y</i></sub>In<sub>1–<i>y</i></sub>Cl<sub>6</sub> Perovskite Films Produced by Single-Source Vacuum Deposition
ACS materials letters