Fabrication and Luminescence Properties of Ca2Gd8(SiO4)6O2:Er3+ Phosphors via Sol-Gel Process

稀土学报(英文版), 2006, 24(z2): 108-110.

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1.Institute of New Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China

2.Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

3.Institute of New Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China

4.Institute of New Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China

5.Institute of New Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China

6.Institute of New Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China

基金项目: Foundation of "Zhidao Jihua" of Hebei Province(04213807)

Fabrication and Luminescence Properties of Ca2Gd8(SiO4)6O2:Er3+ Phosphors via Sol-Gel Process

Keywords： silicate oxyapatite

Ca2RE8(SiO4)6O2 (RE=Y, Gd, La) is a kind of ternary rare-earth-metal silicate with the oxyapatite structure, which was used as host materials for the luminescence of various rare earth and mercury-like ions. Ca2Gd8(SiO4)6O2:Er3+ phosphors were prepared through the sol-gel process. X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectra were used to characterize the resulting phosphors. The results of XRD indicate that the phosphors crystallized completely at 1000 ℃. SEM study reveals that the average grain size is 400～1000 nm. In Ca2Gd8(SiO4)6O2:Er3+ phosphors, the Er3+ shows its characteristic green emission at 528 nm (2H11/2-4I15/2) and 548 nm(4S3/2-4I15/2) upon excitation into 382 nm, with an optimum doping concentration of 5% (mole fraction) of Gd3+ in the host lattices.

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Fabrication and Luminescence Properties of Ca2Gd8(SiO4)6O2:Er3+ Phosphors via Sol-Gel Process

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