Highly stable and tuneable-spectrum Pb2+-, Sb3+- and Ag+-doped Cs2KIn0.7Bi0.3Cl6 perovskite nanocrystals for anti-counterfeiting.
Indium-based double perovskite nanocrystals (NCs) are promising for anti-counterfeiting applications but are hindered by poor air stability and limited colour tunability due to weak ligand binding and parity-forbidden transitions. Herein, we propose a favourable ligand binding strategy to synthesise Bi3+-doped Cs2KInCl...