The influence of Pr3+ co-doping on the luminescent properties of Lu2O3:5Â mol% Eu films

► Uniform and crack free Lu2O3:(Eu,Pr) films were prepared by the Pechini sol-gel method. ► The Lu2O3:(Eu,Pr) films are presented to be polycrystalline with an average grain size of about 30 nm. ► The afterglow and decay time of Lu2O3:5 mol% Eu films can be decreased by co-doping Pr3+. ► The mechanism of the afterglow reducing by Pr3+ is suggested to be non-radiative quenching.