Synthesis and Properties of Eu3+ Activated Strontium Molybdate Phosphor
来源期刊：JOURNAL OF RARE EARTHS2007年第6期
论文作者：Huai Sufang Guan Li Guo Qinglin Li Panlai Yang Zhiping Li Xu
Key words：white light emitting diodes (WLED); red phosphor; molybdate; XRD; luminescent intensity; rare earths;
Abstract: In order to prepare fluorescent material for white Light Emitting Diodes (LEDs), a new Eu3+ activated molybdate phosphor SrMoO4 was fabricated with solid-state method.X-ray diffraction (XRD) showed that the doping of trivalent europium ion reduced the lattice parameters.The excitation and emission spectra indicated that this phosphor could be excited effectively by the visible light, and then emitted red light with the peaks located at 616 and 624 nm.The influence of Eu3+ concentration on the luminescent properties of Eu3+ doped SrMoO4 was investigated and the 25%(mole fraction) was the appropriate molar concentration.The reaction time and temperature had obvious effect on the luminescent properties.The luminescent intensity reached the strongest when it was sintered at 800 ℃ for 3 h.
Huai Sufang1，Guan Li1，Guo Qinglin1，Li Panlai1，Yang Zhiping1，Li Xu1
(1.Physics Science and Technology College,Hebei University,Baoding 071002,China)
Abstract:In order to prepare fluorescent material for white Light Emitting Diodes (LEDs), a new Eu3+ activated molybdate phosphor SrMoO4 was fabricated with solid-state method.X-ray diffraction (XRD) showed that the doping of trivalent europium ion reduced the lattice parameters.The excitation and emission spectra indicated that this phosphor could be excited effectively by the visible light, and then emitted red light with the peaks located at 616 and 624 nm.The influence of Eu3+ concentration on the luminescent properties of Eu3+ doped SrMoO4 was investigated and the 25%(mole fraction) was the appropriate molar concentration.The reaction time and temperature had obvious effect on the luminescent properties.The luminescent intensity reached the strongest when it was sintered at 800 ℃ for 3 h.
Key words:white light emitting diodes (WLED); red phosphor; molybdate; XRD; luminescent intensity; rare earths;
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