Lu_(2)(MoO_(4))_(3):Eu^(3+)荧光粉的制备及热增强发光  

Preparation and thermally enhanced luminescence of Lu_(2)(MoO_(4))_(3):Eu^(3+)phosphors

作　　者：陈子军 曹春燕 郑翌飞 张敏 黄倪慧 白碧海 谢安 CHEN Zijun;CAO Chunyan;ZHENG Yifei;ZHANG Min;HUANG Nihui;BAI Bihai;XIE An(Fujian Provincial Key Laboratory of Functional Materials and Applications,School of Materials Science andEngineering,Xiamen University of Technology,Xiamen 361024,China)

机构地区：[1]厦门理工学院材料科学与工程学院福建省功能材料及应用重点实验室,福建厦门361024

出　　处：《功能材料》2023年第4期4196-4201,共6页Journal of Functional Materials

基　　金：福建省自然科学基金(2021J011207);福建省自然科学基金重点项目(2020J02049);福建省功能材料及应用重点实验室开放基金资助(厦门理工学院fma2022006)。

摘　　要：采用固相法制备了Lu_(2)(MoO_(4))_(3):Eu^(3+)系列红色荧光粉,利用X射线粉末衍射仪(XRD)、场发射扫描电子显微镜(FE-SEM)、能谱仪(EDS)和荧光光谱(PL)仪对制备荧光粉的结构、形貌、元素组成及光致发光性能进行表征与分析。实验结果表明Eu^(3+)成功掺入基质晶格中并得到Lu_(2)(MoO_(4))_(3):Eu^(3+)纯相样品,荧光粉颗粒大小在2μm左右。制备温度依赖样品光致发光结果表明1000℃下制备Lu_(2)(MoO_(4))_(3):Eu^(3+)样品发光性能最好。煅烧时间依赖样品光致发光结果表明1000℃下煅烧时间为6 h时样品发光效果最好。反常于荧光粉发光热猝灭现象,Lu_(2)(MoO_(4))_(3):Eu^(3+)样品在外界测试温度为250℃左右时出现热增强发光现象,与Lu_(2)(MoO_(4))_(3)负热膨胀特性有关。Lu_(2)(MoO_(4))_(3):Eu^(3+)red phosphors were synthesized by a solid-state reaction method.The structure,the morphology,the compositions,and the photoluminescence(PL)properties of the phosphors were characterized and analyzed by X-ray powder diffractometer(XRD),field emission scanning electron microscopy(FE-SEM),energy dispersive spectroscopy(EDS),and fluorescence spectrometer.The experimental results suggest that the Eu^(3+)ions were successfully doped into Lu_(2)(MoO_(4))_(3)matrix,samples were pure phase of Lu_(2)(MoO_(4))_(3):Eu^(3+),and the particle size of the phosphors were about 2μm in size.The synthetic temperature dependent samples suggest that the Lu_(2)(MoO_(4))_(3):Eu^(3+)synthesized at 1000℃possessed the most excellent PL performance.The calcining time dependent samples suggest the Lu 2(MoO 4)3:Eu 3+synthesized for 6 h at 1000 o C had the strongest PL intensity.Abnormal to the thermal quenching luminescence of phosphors,the Lu_(2)(MoO_(4))_(3):Eu^(3+)samples exhibited thermal enhancing PL intensity with the measuring temperature increased to about 250℃,which had relations to the negative thermal expansion characteristics of Lu_(2)(MoO_(4))_(3).

关 键 词：固相法 Lu_(2)(MoO_(4))_(3):Eu^(3+) 荧光粉 热增强发光 负热膨胀 

分 类 号：O482.31[理学—固体物理]