Photoluminescence Spectroscopic Study of BaMgAl10O17:Eu Phosphor Coated with CaF2via a Sol-Gel Process

[摘要] CaF2coatings on the surface of BaMgAl10O17:Eu (BAM) were prepared by a sol-gel process, and the optical properties and antithermal degradation properties were analyzed by photoluminescence spectra recorded under 254 nm and 147 nm excitation. The results indicate that BAM particles were successfully coated with CaF2and CaF2coatings show an interesting property to enhance the blue emission intensity of BAM. The optimum antithermal degradation properties were obtained at the weight ratio 0.4 wt% under 254 nm excitation and 0.3 wt% under 147 nm excitation, respectively.

[学科分类] 光谱学