A New Blue-Emitting Phosphor of Ce 3+- Activated Fluorosilicate Apatite Ba2Y3[ SiO4] 3F

作者：Yu, Ruijin^*; Li, Hongjuan; Ma, Hailong; Wang, Caifeng; Wang, Huan

来源：Journal of the American Ceramic Society, 2014, 97(4): 1151-1156.

DOI：10.1111/jace.12765

• LUMINESCENCE
• SITES
• EU2+
• EXCITATION
• EU3+
• SR

Blue-emitting phosphor of Ce3+-activated fluorosilicate apatite Ba2Y3[SiO4](3)F was prepared via conventional solid-state reaction method. The X-ray powder diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL) excitation and emission spectra, and the decay curves (lifetimes) were applied to characterize the phosphors. The effects of Ce3+ activator concentration on the luminescence properties were investigated. Ba2Y2.85Ce0.15[SiO4](3)F exhibits the brightest blue emission with CIE coordinates of (x=0.231, y=0.301). The crystallographic site of Ce3+ ions in Ba2Y3[SiO4](3)F lattices was identified. Two kinds of crystallographic Ce3+ occupying MI and MII sites in Ba2Y3[SiO4](3)F lattices result in two distinct emission centers. The internal PL quantum efficiency, the temperature-dependent luminescence, and the activation energy of thermal quenching were investigated to evaluate the potential application. This is a new kind of blue-emitting phosphor based on apatite structure.

• 出版日期2014-4
• 单位西北农林科技大学