Luminescence and energy transfer of a novel BaCeF5: Tb3+, Eu3+ color-tunable phosphor

A novel BaCeF 5 : Tb 3+ , Eu 3+ color-tunable phosphor was synthesized using a co-precipitation-hydrothermal method. The photoluminescence (PL) spectra revealed that BaCeF 5 has its own fluorescence effect as blue emission. The energy transfer process from Ce 3+ to Tb 3+ was achieved after doping with Tb 3+ , enabling the conversion of the luminous color from blue to green. By doping Eu 3+ in BaCeF 5 : 10 %Tb 3+ , the energy transfer process from Tb 3+ to Eu 3+ was further realized and the transition from green to orange light continued in the phosphor. Finally, the energy transfer mechanism of Ce 3+ -Tb 3+ -Eu 3+ in the BaCeF 5 : Tb 3+ , Eu 3+ samples was explored. The results indicate that by varying the Tb 3+ and Eu 3+ concentrations, the phosphor transition from blue - green - orange light can be performed, which is a promising material to be applied to multicolor emission modulated luminescent materials as well as incandescent lamp materials.