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Ca0.7Sr0.3MoO4:Eu3+红色荧光粉发光性能的改进
作者:耿秀娟 陈永杰 肖林久 杨英 谢颖 
单位:沈阳化工大学 辽宁省稀土化学及应用重点实验室 沈阳 110142 
关键词:红色荧光粉 水热合成 钼酸钙锶 电荷补偿 
分类号:O 482.31
出版年,卷(期):页码:2015,43(7):959-962
DOI:10.14062/j.issn.0454-5648.2015.07.17
摘要:

 采用水热法制备了Ca0.70Sr0.18MoO4:Eu0.083+, Ca0.70Sr0.18−1.5xMoO4:Eu0.083+,Lax3+与Ca0.70Sr0.18−yMoO4:Eu0.083+, La0.043+, Nay+红色荧光粉。用X射线衍射、扫描电子显微镜、荧光分光光度计对样品的物相、形貌以及发光性能进行测试和表征。结果表明:La3+离子的共掺杂可显著增强Eu3+离子的发光性能。当La3+的掺杂量为4%(摩尔分数)时,在395 nm激发下,位于616 nm处的主发射峰的相对发光强度最大。另外,电荷补偿剂Na+的引入,也明显增强了荧光粉的发光强度,荧光粉的最高发光强度是未引入Na+荧光粉的1.47倍。

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 The red phosphors of Ca0.70Sr0.18MoO4:Eu0.083+, Ca0.70Sr0.18−1.5xMoO4:Eu0.083+, Lax3+ and Ca0.70Sr0.18−yMoO4: Eu0.083+, La0.043+, Nay+ were prepared by a hydrothermal method. The crystalline phase, morphology and luminescence characteristics of the phosphor particles were characterized by X-ray diffraction, scanning electron microscopy and fluorophotometry, respectively. The results show that the luminescence properties of Eu3+ ions can be evidently improved by co-doping of La3+ ions. When the doping mole fraction of La3+ is 4%, the relative luminous intensity at 616 nm main emission peak is maximum under the excitation of 395 nm. In addition, the incorporation of doping charge compensators Na+ can improve the luminescence intensity of phosphors. The maximum emission intensity is 1.47 times greater than that of phosphor without charge compensation.

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基金项目:
辽宁省博士科研启动基金(20141079)项目。
作者简介:
耿秀娟(1975—),女,博士,副教授。
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