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Nano sized La0.4F3:Ce0.45,Tb0.15(core), La0.4F3:Ce0.45,Tb0.15(Ti O2)(core) shell, La0.55F:Ce0.45, and La0.85F3:Tb0.15 particles were synthesized by adopting co-precipitation technique in acidic environment and coated with Ti O2 to form a core-shell structure by adopting a mechanical dispersion method at room temperature. The synthesized materials were characterized using X-ray diffraction(XRD), transmission electron microscopy(TEM), Fourier transform infrared spectroscopy(FTIR), ultraviolet-visible spectroscopy(UV-Vis) absorption, photoluminescence and lifetime spectroscopy. The crystal structure of La0.4F3:Ce0.45,Tb0.15 remained the same as La F3 after being doped with Ce and Tb ions but with a slight decrease in the lattice parameter. TEM image confirmed the formation of a core-shell structure. The La0.4F3:Ce0.45,Tb0.15/Ti O2 exhibited Tb3+ fluorescence enhancement by a factor of 1.76. Scintillation from the synthesized materials was also observed under X-ray excitation.
Nano sized La0.4F3: Ce0.45, Tb0.15 (core), La0.4F3: Ce0.45, Tb0.15 (Ti02) (core) shell, La0.55F: Ce0.45, and La0.85F3: Tb0.15 particles were synthesized by adopting a co-precipitation technique in an acidic environment and coated with Ti O2 to form a core-shell structure by adopting a mechanical dispersion method at room temperature. The synthesized materials were characterized using X-ray diffraction (XRD) , transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis) absorption, photoluminescence and lifetime spectroscopy. The crystal structure of La0.4F3: Ce0.45, Tb0.15 remaining the same as La F3 after being doped with Ce and Tb ions but with a slight decrease in the lattice parameter. TEM image confirmed the formation of a core-shell structure. The La0.4F3: Ce0.45, Tb0.15 / Ti O2 exhibiting Tb3 + fluorescence enhancement by a factor of 1.76. Scintillation from the synthesized materials was also observed under X-ray excitation.