Luminescence properties of a novel cyan-blue light emitting Ce3+doped SrZrSi2O7 phosphor

A novel Ce3+ doped SrZrSi2O7 (SZSO) phosphor with different doping concentration (0.05–1.5 mol %) were synthesized by conventional solid-state reaction method. To confirm crystal structure and phase purity of prepared phosphor X-ray diffractions (XRDs) have been done. Surface morphology, compositional and functional groups analysis were investigated using FE-SEM, EDXS & FTIR techniques. In order to study the optical properties of the synthesized phosphor photoluminescence and thermoluminescence were investigated in detailed. Photoluminescence studies of SZSO: Ce3+ phosphor shows strong broad excitation peak at 293 nm owing due to 4f → 5d transition and corresponding broad emission peak obtain at 480 nm due to 5d → 4f spin allowed transition. The optimum PL intensity obtain for 0.1 mol% Ce3+ doping concentration. CIE co-ordinate, color purity and CCT of prepared phosphor are also calculated which shows the SZSO: Ce3+ phosphor emits cyan-blue light, can be applicable for solid state lighting. Thermoluminescence of SZSO: Ce3+ phosphor shows two TL glow curve peaks at 56 °C and 130 °C temperature. The optimum TL intensity obtained for 0.2 mol% Ce3+ doped SZSO phosphor for 15 min UV irradiation time at 254 nm UV excitation source. TL emission spectra and fading effect are also analyzed. TL kinetic parameters are determined by peak shape method. Thermoluminescence properties shows that prepared SZSO: Ce3+ phosphor will be potential applicable for UV-dosimetry.