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首页> 外文期刊>Optical Materials >Spectroscopic properties of red-emitting phosphor series (Y_(4-x)Eu_x) Zn_4(SiO_4)_5 (x = 0.004-4) based on the site occupation of Eu~(3+) ion
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Spectroscopic properties of red-emitting phosphor series (Y_(4-x)Eu_x) Zn_4(SiO_4)_5 (x = 0.004-4) based on the site occupation of Eu~(3+) ion

机译：基于Eu〜（3+）离子的位置占据率的红色荧光粉系列（Y_（4-x）Eu_x）Zn_4（SiO_4）_5（x = 0.004-4）的光谱性质

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摘要

Y4Zn4(SiO4)(5) silicate doped with Eu3+ ions was prepared by the high temperature solid state method. The phase purity of phosphor series (Y4-xEux)Zn-4(SiO4)(5) (0.004 <= x <= 4) was checked by X-ray diffraction. The crystal structure, interatomic distances, and atom coordination numbers of Y4Zn4(SiO4)(5) were determined using x-ray powder diffraction. A study of the luminescent properties of (Y4-xEux)Zn-4(SiO4)(5) was carried out employing photoluminescence excitation and emission spectra and luminescence decay. The occupied sites of Eu3+ ions, relative intensity between magnetic dipole transition and electric dipole transition and the F-7(J) levels splitting by the crystal field were discussed in terms of a low symmetry site of Y3+ ion in the Y4Zn4(SiO4)(5) host lattice. The concentration quenching of Eu3+ luminescence was also investigated from the concentration dependence of the decay time measured for Eu3+ D-5(0) -> F-7(1,2) luminescence.
机译：通过高温固态法制备了掺有Eu3 +离子的Y4Zn4（SiO4）（5）硅酸盐。通过X射线衍射检查荧光体系列（Y4-xEux）Zn-4（SiO4）（5）（0.004≤x≤4）的相纯度。用X射线粉末衍射测定了Y4Zn4（SiO4）（5）的晶体结构，原子间距离和原子配位数。利用光致发光激发和发射光谱以及发光衰减对（Y4-xEux）Zn-4（SiO4）（5）的发光性质进行了研究。根据Y4Zn4（SiO4）中Y3 +离子的低对称位，讨论了Eu3 +离子的占据位点，磁偶极跃迁与电偶极跃迁之间的相对强度以及被晶体场分裂的F-7（J）能级。 5）宿主晶格。从Eu3 + D-5（0）-> F-7（1,2）发光的衰减时间的浓度依赖性研究了Eu3 +发光的浓度猝灭。

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