Effect of Rb+ co-doping on the optical properties in VIS and NIR emitting CsPbCl3:Yb3+ perovskite powder

An increase in the concentration of Rb ions in powdered CsPbCl 3 :10%Yb 3+ leads to the appearance of structural defects of a different type, allowing the intensity of the emission bands of both the matrix and the optically active dopant to be modified.