| 近紫外激发Ca2NaMg2V3O12:Sm3+荧光粉的制备及发光性能 |
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| 引用本文： | 周江聪,陈含德,李楚梅,郑志恒.近紫外激发Ca2NaMg2V3O12:Sm3+荧光粉的制备及发光性能[J].人工晶体学报,2019,48(5):896-900. |
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| 作者姓名： | 周江聪 陈含德 李楚梅 郑志恒 |
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| 作者单位： | 龙岩学院化学与材料学院,龙岩,364012 |
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| 基金项目： | 国家自然科学基金(51702147) |
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| 摘 要： | 近紫外激发单一基质白光发射荧光粉是当前LED用荧光转换材料的研究热点。采用高温固相反应制备了Ca2NaMg2V3O12∶Sm^3+荧光粉,并利用X射线粉末衍射仪和荧光光谱仪等测试手段,对其物质结构和荧光性能进行了表征。探讨了(VO4)^3-基团的发光机理,及其与Sm^3+离子之间的能量传递机制。结果表明:Ca2NaMg2V3O12∶Sm^3+荧光粉属于立方相晶体结构。在340nm紫外线激发下,样品发射蓝绿光,发射最强峰位于500nm,发射光谱覆盖整个可见光区。Sm^3+离子的最佳掺杂浓度为0.03,同时(VO4)^3-基团与Sm^3+离子之间的能量传递主要是通过电四偶极-电四偶极相互作用来实现的。
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| 关 键 词： | Ca2NaMg2V3O12 发光性能 自激活发光 近紫外激发 荧光粉 |
Preparation and Luminescent Properties of Near-Ultraviolet Excited Ca2 NaMg2 V3 O12:Sm3+ Phosphor |
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| ZHOU Jiang-cong,CHEN Han-de,LI Chu-mei,ZHENG Zhi-heng.Preparation and Luminescent Properties of Near-Ultraviolet Excited Ca2 NaMg2 V3 O12:Sm3+ Phosphor[J].Journal of Synthetic Crystals,2019,48(5):896-900. |
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| Authors: | ZHOU Jiang-cong CHEN Han-de LI Chu-mei ZHENG Zhi-heng |
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| Affiliation: | (College of Chemistry & Materials,Longyan University,Longyan 364012,China) |
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| Abstract: | Single phase white light emission phosphors excited by near ultraviolet light is the research focus of luminescent conversion materials. The Ca2NaMg2V3O12∶Sm 3+ phosphors were prepared by the high temperature solid phase reaction and their crystal structure and fluorescence properties were characterized by the X-ray powder diffraction and fluorescence spectrometer. The luminescence mechanism of the (VO4)^3- groups and the energy transfer mechanism between (VO4)^3- groups and Sm^3+ ions were discussed. The results show that the Ca2NaMg2V3O12∶Sm^3+ phosphors belong to cubic crystal structure. Under the the excitation of the wavelength of 340 nm,the samples display blue-green emission with a strongest emission peak at 500 nm. The emission spectrum covers the whole visible light region. The optimized doping concentration for Sm^3+ ions is 0.03. Meanwhile,the energy transfer between (VO4)^3- groups and Sm^3+ ions is realized by electric quadrupole-quadrupole (q-q) interactions. |
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| Keywords: | Ca2NaMg2V3O12 luminescence property self-activation luminescence near-ultraviolet excited phosphors |
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