Effect of Nd concentration on persistent luminescence of Y3Al2Ga3O12:Ce3+, Cr3+,Nd3+ ceramics for the near-infrared region

Research on materials characterized by persistent luminescence (PersL), particularly in the red and infrared emission range, has attracted continuous interest in recent years because of the enormous potential for appli-cations in the fields of identification, security, and medicine. In this work, the (Y,Ce,Nd)(3)(Al,Cr)(2)Ga3O12 ceramics were successfully prepared by the Pechini method and sintering in air followed by a Hot Isostatic Pressing post-treatment. The influence of Nd concentration on the photoluminescence and PersL, in particular, on the decay time in the visible (up to 610 nm) and red and near-infrared ranges (from 610 nm) has been studied. For the obtained ceramics, the analysis of the depth of traps depending on the concentration of Nd was performed.