| Photoluminescence properties of solid-state Tb^3＋ doped NaY（MoO4）2 |
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| 引用本文： | 张子才,徐书超,李盼来,王志军,孙江,杨志平,庞立斌. Photoluminescence properties of solid-state Tb^3＋ doped NaY（MoO4）2[J]. 光电子快报, 2014, 10(6): 447-450. DOI: 10.1007/s11801-014-4162-z |
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| 作者姓名： | 张子才 徐书超 李盼来 王志军 孙江 杨志平 庞立斌 |
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| 作者单位： | [1]Industrial & Commercial College, Hebei University, Baoding 071002, China; [2]Department of Foreign Language Teaching and Research, Hebei University, Baoding 071002, China; [3]College of Physics Science & Technology, Hebei University, Baoding 071002, China |
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| 基金项目： | supported by the National Natural Science Foundation of China（No.50902042）; the Natural Science Foundation of Hebei Province（Nos.A2014201035 and E2014201037）; the Education Office Research Foundation of Hebei Province（Nos.ZD2014036 and QN2014085） |
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| 摘 要： | A series of Tb^3＋ doped Na Y（Mo O4）2 are synthesized by a solid-state reaction at 550 °C for 4 h, and their luminescent properties are investigated. The phase formation is carried out with X-ray powder diffraction analysis, and there is no other crystalline phase except Na Y（Mo O4）2. Na Y（Mo O4）2：Tb^3＋ can produce the green emission under 290 nm radiation excitation, and the luminescence emission peak at 545 nm corresponds to the 5D4→7F5 transition of Tb^3＋. The emission intensity of Tb^3＋ in Na Y（Mo O4）2 is enhanced with the increase of Tb^3＋ concentration, and there is no concentration quenching effect. The phenomena are proved by the decay curves of Tb^3＋. Moreover, the Commission International de I＇Eclairage（CIE） chromaticity coordinates of Na Y（Mo O4）2：Tb^3＋ locate in the green region.
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| 关 键 词： | NaY 发光性能 固态 掺杂 X射线粉末衍射分析 铽 反应合成 发光特性 |
| 收稿时间： | 2014-07-18 |
Tunable emission, concentration quenching and crystallographic sites of Eu2+ in Sr3Y(PO4)3 |
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| ZHANG Zi-cai,XU Shu-chao,LI Pan-lai,WANG Zhi-jun,SUN Jiang,YANG Zhi-ping and PANG Li-bin. Tunable emission, concentration quenching and crystallographic sites of Eu2+ in Sr3Y(PO4)3[J]. Opto-electronics Letters, 2014, 10(6): 447-450. DOI: 10.1007/s11801-014-4162-z |
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| Authors: | ZHANG Zi-cai XU Shu-chao LI Pan-lai WANG Zhi-jun SUN Jiang YANG Zhi-ping PANG Li-bin |
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| Affiliation: | LIU Hai-yan , ZHANG Kun , PANG Li-bin , GAO Shao-jie , GAO Zhan-jun , DUAN Ping-guang, ZHANG Zi-cai , and WANG Zhi-jun (1.Industrial ＆ Commercial College, Hebei University, Baoding 071002, China; 2. Department of Foreign Language Teaching and Researeh, Hebei University, Baoding 071002, China; 3. College of Physics Science ＆ Technology, Hebei University, Baoding 071002, China) |
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| Abstract: | A series of Sr3Y(PO4)3:Eu2+ samples are synthesized by the high temperature solid-state method. Sr3Y(PO4)3:Eu2+ shows an asymmetrical emission band under excitation of 350 nm. The emission peaks at 426 nm and 497 nm are assigned to the nine-coordination Eu2+ and six-coordination Eu2+, respectively. The effects of Eu2+ doping content on the emission intensity and color are observed, and the concentration quenching effect is also observed. For two different Eu2+ luminescence centers, the quenching mechanisms are dipole-dipole interaction and quadrupole-quadrupole interaction, respectively. And the critical distance of energy transfer is calculated by concentration quenching and turns out to be about 3.67 nm. The results above show that the asymmetrical emission band of Sr3Y(PO4)3:Eu2+ comes from two different Eu2+ luminescence centers in the lattice. |
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