Efficient resonance energy transfer study of BaClF: Ce3+ to Tb3+

Abstract

Ce3+/Tb3+ co-doped BaClF luminescent materials with highly efficient green luminescent properties. The phosphor was synthesized by a co-precipitation hydrothermal method, and the structure and morphology of the phosphor were characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and X-ray photoelectron spectroscopy (XPS). The photoluminescence properties of the prepared products were investigated and the energy transfer efficiencies were calculated for BaClF:3.0 mol% Ce3+, ymol% Tb3+ ( y = 0–0.5). By adjusting the doping concentration of Tb3+ ions in BaClF: Ce3+, Tb3+ phosphors, the luminescent color of the phosphor can be easily changed from blue to green. The Ce3+ and Tb3+ co-doped BaClF phosphor shows strong PL emission in the green region due to the resonance energy transfer from Ce3+ to Tb3+. The energy transfer mechanism of Ce3+ and Tb3+ co-doped BaClF samples was analyzed based on the energy level relationship between Ce3+ and Tb3+. The energy transfer efficiency from Ce3+ to Tb3+ was calculated and found to be up to 89.63%. These results suggest that BaClF: Ce3+, Tb3+ fluorescent material can be a potential green luminescent material for optoelectronic applications.