X-ray and VUV excitation studies on Pr3+ activated Li2CaSiO4

Highlights: • UV emission. • Photo- and Radioluminescence. • Thermal quenching. • Praseodymium. This work concerns the optical properties of Pr³⁺ doped Li₂CaSiO₄. The material was synthesized with different dopant concentrations and has been investigated under X-ray and VUV excitation. Additionally, the temperature dependence of the individual 4f-4f transitions was studied and evaluated. The phase purity was determined by using X-ray powder diffraction measurements, while an infrared study was carried out to determine the phonon energy. The photoluminescence properties were determined by excitation and emission, diffuse reflectance and time and temperature dependent measurements.