| Sr3Bi（PO4）3：Eu^2＋ Luminescence,Concentration Quenching and Crystallographic Sites |
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| 作者姓名： | 高少杰, 李婷, 张子才, 李盼来, 王志军, 杨志平 |
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| 作者单位： | [1]College of Physics Science and Technology, Hebei University, Baoding 071002; [2]Continuing Education College, Hebei University. Baoding 071002 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 50902042, the Natural Science Foundation of Hebei Province under Grant Nos A2014201035 and E2014201037, and the Education Office Research Foundation of Hebei Province under Grant Nos ZD2014036 and QN2014085. |
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| 摘 要： | A blue emitting phosphor Sr3Bi（PO4）3：Eu2＋ is synthesized luminescent property is investigated. Sr3Bi（PO4 ）3 ：Eu^2＋ can by a high-temperature solid state method, and its create blue emission under the 332 radiation excitation, and the prominent luminescence in blue （423nm） due to the 4fSd^1→4f^7 transition of the Eu^2＋ ion. The crystallographic sites of the Eu^2＋ ion in Sr3Bi（PO4）3 are analyzed, and the 420 and 440 nm emission peaks of the Eu^2＋ ion are assigned to the nine-coordination and eight-coordination, respectively. The emission intensity of Sr3Bi（PO4）3：Eu^2＋ is influenced by the Eu^2＋ doping content, and the concentration quenching effect is observed. The quenching mechanism is the dipole-dipole interaction, and the critical distance of energy transfer is calculated by the concentration quenching method to be approximately 1.72nm.
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| 关 键 词： | 浓度猝灭 发光特性 Eu 偶极相互作用 蓝色荧光粉 晶位 蓝色发光 发光强度 |
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