| NaLa(MoO4)2∶Eu3+的水热调控合成与发光特性研究 |
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| 引用本文： | 孙家跃,曹纯,杜海燕.NaLa(MoO4)2∶Eu3+的水热调控合成与发光特性研究[J].物理学报,2011,60(12):127801-127801. |
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| 作者姓名： | 孙家跃 曹纯 杜海燕 |
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| 作者单位： | 北京工商大学理学院,北京 100048 |
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| 基金项目： | 国家自然科学基金(批准号:20876002,20976002)、北京市自然科学基金重点项目(批准号:2091002)和北京市高等学校人才强教计划(批准号:201107,201148)资助的课题. |
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| 摘 要： | 采用水热法合成了不同粒径的NaLa(MoO4)2∶Eu3+微晶.通过调节乙二醇浓度和反应时间,研究了NaLa(MoO4)2∶Eu3+微晶的形貌演变过程,在水热条件下180 ℃反应16 h获得了均一梭子形NaLa(MoO4)2∶Eu3+微晶,其晶粒长度约为2.0 μm.荧光光谱分析表明,Eu3+取代了NaLa(MoO4)2中La3+的格位, Eu3+在613 nm处红光发射(5D0–7F2跃迁)的浓度猝灭机理是电偶极-电四极相互作用,并发生了Eu3+( 5D1 ) + Eu3+(7F0 )→ Eu3+( 5D0 ) + Eu3+(7F3) 交叉弛豫,由此导致浓度猝灭.
关键词：
钼酸盐
水热法
稀土离子
发光
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| 关 键 词： | 钼酸盐 水热法 稀土离子 发光 |
| 收稿时间： | 3/3/2011 12:00:00 AM |
Hydrothermal controlled synthesis and luminescence properties of NaLa(MoO_4)_2:Eu~(3+) microcrystals |
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| Sun Jia-Yue,Cao Chun and Du Hai-Yan.Hydrothermal controlled synthesis and luminescence properties of NaLa(MoO_4)_2:Eu~(3+) microcrystals[J].Acta Physica Sinica,2011,60(12):127801-127801. |
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| Authors: | Sun Jia-Yue Cao Chun and Du Hai-Yan |
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| Institution: | School of Science, Beijing Technology and Business University, Beijing 100048, China;School of Science, Beijing Technology and Business University, Beijing 100048, China;School of Science, Beijing Technology and Business University, Beijing 100048, China |
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| Abstract: | Eu3+ doped NaLa(MoO4)2 microcrystals with different sizes are synthesized by a mild hydrothermal method, and the morphologies of the microcrystals can be easily controlled by adjusting the volume ratio of ethylene glycol to water and the aging time. Uniform high-quality shuttle-like microcrystals with an average length of 2.0 μm are obtained under the hydrothermal condition of 180℃ for 16 h. From the emission spectra of NaLa(MoO4)2∶Eu3+ microcrystals, it is concluded that the dopant Eu3+ ion occupies a La3+ site. It is indicated that the concentration quenching of the emission peak at 613 nm of Eu3+ is ascribed to the electric dipole-electric quadrupole interaction, and the cross relaxation process of Eu3+(5D1 ) + Eu3+(7F0 )→ Eu3+( 5D0 ) + Eu3+(7F3) appear. |
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| Keywords: | molybdate hydrothermal synthesis rare-earth ions luminescence |
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