04.稀土发光材料NaSrPO4: Eu2+，Ce3+的制备及光谱研究

赵雅卿¹王延铭² 胡天麒²张晓亮²

(1.内蒙古包头华鼎铜业发展有限公司，2. 内蒙古科技大学化学与化工学院

内蒙古 包头 014010）

摘要：采用溶胶凝胶法制备了NaSr_0.995-XPO₄: 0.005Eu²⁺，xCe³⁺系列样品(x=0.01，0.03，0.05，0.07)，并利用X射线衍射及光谱等技术对材料的结构和发光性能进行了表征．XRD分析表明该样品为单相，稀土离子Eu²⁺，Ce³⁺的加入并未改变NaSrPO₄的晶格结构；荧光光谱分析显示在最大激发波长340nm的激发下，最大发射波长位于430nm处，样品发蓝光。Ce³⁺的掺杂可使Eu²⁺的发射强度显著增强，样品的发光强度随着Ce³⁺掺入量的增加呈现先增后降的趋势，在浓度大于0.05时，出现了浓度猝灭现象。

关键词：LED；发光材料；光谱特性

中图分类号：0482．31文献标识码：A

The preparation and spectrum study of rare earth luminescent materials NaSrPO₄: Eu²⁺，Ce³⁺

ZHAO Ya-qing, WANG Yan-ming,HU Tian-qi, ZHANG Xiao-liang

(1.Baotou Huading Copper Industry Development Ltd.,Co., Inner Mongolia,Baotou014010, China ;

2Chemistry and ChemicalEngineeringSchool,Inner MongoliaUniversity of Science and Technology, Baotou 014010, China )

Key words: LED， luminescence， luminescent properties

Abstract: A series of NaSrPO₄: Eu²⁺，Ce³⁺were prepared by sol-gel method. The structures and luminescent properties of the samples were tested by using XRD and fluorescence spectrum. XRD shows that the samples are single-phase， and the small amount of Eu²⁺，Ce³⁺doped does not change the orthorhombic crystal system of NaSrPO₄. Spectral measurement shows that the strongest emission bands lie at about 430 nm under near-ultraviolet excitation at 340 nm， presenting blue light. The doped Ce³⁺enhanced the emission intensity of Eu²⁺ notably, and the luminous intensity of the samples increase first along with the raise of Ce3+ contents, but fall with the further addition of Ce3+ .The concentration quenching appeared when the concentration of Ce3+ was greater than0.05 mol/L.