Preparation and Luminescence Properties of the Nano- Composite Materials LaF3 - SiO2: Eu3+
Eu3+ doped LaF3-SiO2 nano-composite material were synthesized by sol-gel method at room temperature, and the structure and properties were characterized by XRD, TG-DTA, IR, excitation and emission spectrum. The structure indicated that the optimal doping formula for preparing nano-materials was La5Si95 that transformed into a stable mineral structure of cerium fluoride, and mainly found Si-O-Si bonds when the temperature was above 500 °C. Luminous property researches showed that the optimum annealing temperature was 500 °C. The best excitation wavelength was 395 nm when the monitoring wavelength was 612 nm, and the optimal doping molar concentration of Eu3+ was 0.35 mol %.
Yun-Hae Kim, Prasad Yarlagadda, Xiaodong Zhang and Zhijiu Ai
X. G. Wang and X. X. Wang, "Preparation and Luminescence Properties of the Nano- Composite Materials LaF3 - SiO2: Eu3+", Advanced Materials Research, Vols. 335-336, pp. 981-984, 2011