Multicolor luminescence and anti-counterfeiting applications in Cs 2 KGdCl 6 double perovskite

We report the synthesis of a double perovskite, Cs 2 KGdCl 6 , via dissolve–dry method. By modulating Sb 3+ and Yb 3+ co-doping concentrations, dual-mode multicolor luminescence tunability in both DS and UC emissions was successfully realized in Cs 2 KGdCl 6 .