| 溶胶-凝胶法合成ZnGa2O4∶Eu及其光学性能 |
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| 引用本文： | 刘晴,邓佳闽,李友芬.溶胶-凝胶法合成ZnGa2O4∶Eu及其光学性能[J].北京化工大学学报(自然科学版),2008,35(1):38-41. |
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| 作者姓名： | 刘晴 邓佳闽 李友芬 |
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| 作者单位： | 北京化工大学1. 材料科学与工程学院；2. 新型高分子材料制备与加工北京市重点实验室，北京 100029 |
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| 摘 要： | 以柠檬酸为络合剂，通过溶胶-凝胶法合成了铕为激活剂的ZnGa2O4:Eu荧光粉。讨论了煅烧温度、保温时间和激活剂的浓度对该荧光粉发光性能的影响。利用X-射线衍射、荧光分光光度计等手段对ZnGa2O4:Eu荧光粉的相组成和发光性能进行了检测。实验结果表明，以Zn(CH3COO)2·2H2O和Ga2O3 为原料，通过溶胶-凝胶法，在950～1000℃煅烧4h可合成出ZnGa2O4 荧光体。当n(Zn)：n(Ga)为1∶4时，所得成品的最强发射峰位于613nm处，为Eu3+特征５D0→７F２ 跃迁，其对应于红色光谱。Eu３＋离子在ZnGa2O4 晶体中占据的位置为非反演对称中心。
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| 关 键 词： | ZnGa2O4 铕 发光材料 溶胶-凝胶法 ZnGa2O4 铕 发光材料 溶胶-凝胶法 |
| 收稿时间： | 2007-03-22 |
| 修稿时间： | 2007年3月22日 |
Preparation of ZnGa2O4:Eu by the sol-gel method and its luminescent properties |
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| LIU Qing,DENG JiaMin,LI YouFen.Preparation of ZnGa2O4:Eu by the sol-gel method and its luminescent properties[J].Journal of Beijing University of Chemical Technology,2008,35(1):38-41. |
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| Authors: | LIU Qing DENG JiaMin LI YouFen |
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| Institution: | 1. College of Materials Science and Engineering; 2. The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029,China |
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| Abstract: | The fluorescent material ZnGa2O4:Eu has been prepared by a sol-gel process using Zn(CH3COO)2·2H2O and Ga2O3 with ratio of n(Zn)：n(Ga) =1:4 as raw materials and citric acid as chelating agent, followed by calciation at 950～1000℃ for 4h. The infulence of calcinations temperature and duration , and concentration of Eu on the luminescent properties was investigated by photoluminescece (PL). The main peak at 610nm can be ascribed to the 5D0→7F2 transition of Eu３+, corresponding to red light . It was found that Eu３+ ions occupy a site lacking an inversion center in the ZnGa2O4 host lattice. |
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| Keywords: | ZnGa2O4 europium luminescent materials sol-gel |
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