A novel orange emissive phosphor LaPO4:Bi, Sm with sharp and splitting emission peaks of Sm3+

作者：Li, Yu; Xia, Yao; Liao, Sen^*; Long, Qiwei; Zhao, Xingyun; Dai, Shasha; Lu, Ke

来源：Materials Letters, 2014, 123: 112-115.

DOI：10.1016/j.matlet.2014.03.034

• Phosphor
• Luminescence
• Optical materials and properties
• Lanthanum phosphate
• Functional

Bi3+, Sm3+ co-doped La0.99-xBixSm0.01PO4 polycrystalline samples were synthesized by calcining precursors at 800 C in air. The precursors were obtained via low-heating temperature solid-state reactions. Crystal structures of the phosphor were examined with XRD and a pure phase was confirmed. The excitation spectra show that the phosphor can be efficiently excited by near-ultraviolet light, and the optimized concentration of Bi3+ is 0.9 mol%. Three sharp, strong, and splitting emission peaks are located at 562, 596, and 642 nm, corresponding to CIE (Commission International de l'Eclairage) chromaticity coordinates x=0.42 and y=0.39, which indicate the orange light emitting property. So, the phosphor is promising in UV-LED chip-based white light-emitting diodes.

• 出版日期2014-5-15
• 单位广西大学