Cr3+-induced broadband near-infrared Ⅰ combined with near-infrared Ⅱ emission via rare earth co-doping in Cs2NaInCl6 for multifunctional detection

The increasing need for simultaneous detection of multiple components and precise analysis has driven the search for high-performance, broadband-emitting near-infrared (NIR) materials. Herein, the Cr3+-doped Cs2NaInCl6 (CNIC) lead-free double perovskites...