Tunable photoluminescent properties of rare-earth co-doped (Na0.5Bi0.5)TiO3 ceramics by Pr3+ concentration

Abstract

Lead-free piezoelectric ceramic materials have received extensive attention due to their potential application in new optoelectronic devices. The outstanding advantages of lead-free piezoelectric materials are nontoxicity and environmental-friendliness. Photoluminescence is one of the important properties of ceramics. This property is widely used in printing, testing materials, medical and other technologies. At the same time, materials with up-conversion luminescence can also be used to detect infrared light. Here, we had made [Formula: see text] and [Formula: see text] co-doped [Formula: see text] (NBT) ceramics. Photoluminescence properties of [Formula: see text] and [Formula: see text] co-doped NBT were studied. The structure of the doped ceramics was characterized by the X-ray diffraction pattern which shows that the doping had little effect on the ceramic structure. Studies on luminescent spectra show that [Formula: see text] has an inhibitory effect on the up-conversion luminescence of [Formula: see text], and a certain concentration of [Formula: see text] promotes the luminescence of [Formula: see text] in the mid-infrared region. Intensity of the up-conversion luminescence was substantially linear with the power of the excitation source. These findings are expected to improve the performance of the NBT-based optoelectronic devices.