| Eu3+掺杂5Li2O-1Nb2O5-5TiO2发光陶瓷的制备及性能研究 |
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| 引用本文： | 王飞,周志勇,曾群,周鹤,姚春凤.Eu3+掺杂5Li2O-1Nb2O5-5TiO2发光陶瓷的制备及性能研究[J].发光学报,2017,38(3). |
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| 作者姓名： | 王飞 周志勇 曾群 周鹤 姚春凤 |
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| 作者单位： | 1. 华南师范大学信息光电子科技学院 广东省微纳光子功能材料与器件重点实验室,广东 广州,510006;2. 中国科学院 无机功能材料与器件重点实验室,上海,200050;3. 华南师范大学信息光电子科技学院 广东省微纳光子功能材料与器件重点实验室, 广东 广州 510006;中国科学院 无机功能材料与器件重点实验室, 上海 200050;4. 华南师范大学 实验中心,广东 广州,510006 |
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| 基金项目： | 广州市珠江科技新星项目,中国科学院无机功能材料与器件重点实验室开放课题,华南师范大学研究生科研创新基金(2015lkxm16;2016lkxm63)资助项目 Supported by Pearl River Science and Technology Nova Project of Guangzhou City,Open Program of Key Laboratory of Inorganic Functional Materials and Devices of Chinese Academy of Sciences,Scientific Research Foundation of Graduate School of South China Normal University |
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| 摘 要： | 以Li2CO3、Nb2O5、TiO2和Eu2O3为原料,采用固相法制备Eu3+掺杂的5Li2CO3-1Nb2O5-5TiO2(LNT)发光介质陶瓷.通过密度、XRD和荧光光谱测试,对0.2%(质量分数)Eu2O3掺杂的陶瓷片进行性能表征.结果表明:1 120 ℃烧结致密的陶瓷片,其晶相结构为"M-相"与Li2TiO3两相复合构成;在400 nm的近紫外光激发下,样品有较强的橙光(592 nm)和红光(615 nm)发射,分别属于Eu3+的5D0→7F1的磁偶极跃迁和5D0→7F2的电偶极跃迁.
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| 关 键 词： | 固相法 Eu3+掺杂 发射光谱 激发光谱 |
Preparation and Properties of Eu-doped 5Li2O-1Nb2O5-5TiO2 Ceramics |
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| Abstract: | Eu-doped 5Li2O-1Nb2O5-5TiO2 (LNT) luminescent dielectric ceramics were synthesized by solid state reaction method with Li2CO3,Nb2O5,TiO2 and Eu2O3 as raw materials.The properties of LNT:0.2%Eu3+(mass fraction)ceramics were characterized by density test,X-ray diffraction(XRD) and photoluminescence spectroscopy,respectively.The XRD results show that the ceramics sintered at 1 120 ℃ consist of 'M-phase' and Li2TiO3 solid solution,no other miscellaneous phase.Under 400 nm excitation,strong red-orange luminescence can be observed.The red emission at 615 nm belonging to 5D0→7F2 transition is an electric dipole transition,while the orange emission at 592 nm corresponding to 5D0→7F1 transition is a typical magnetic dipole allowed transition. |
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| Keywords: | solid state reaction method Eu-doped emission spectrum excitation spectrum |
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