多面体CaWO_4:Dy^(3+),M^+(M=Li,Na,K)荧光粉的制备及其发光性能  

Solvothermal Synthesis and Photoluminescence Properties of Polyhedron CaWO_4:Dy^(3+),M^+(M=Li,Na,K)

作　　者：覃利琴 杨黄根 陶萍芳 李世明 QIN Liqin;YANG Huanggen;TAO Pingfang;LI Shiming(College of Chemistry and Food Science,Yulin Normal University,Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology,Yulin 537000,China)

机构地区：[1]玉林师范学院化学与食品科学学院广西农产资源化学与生物技术重点实验室,玉林537000

出　　处：《中国陶瓷》2019年第2期18-22,28,共6页China Ceramics

基　　金：国家自然科学基金(21767029);广西自然科学基金(2017GXNSFAA198197);广西高校中青年教师基础能力提升项目(2017KY0536);校级科研项目(2017YJKY24)

摘　　要：以溶剂热法合成多面体CaWO_4:Dy^(3+),M^+(M=Li,Na,K)荧光粉,考察Dy^(3+)掺杂量、Li^+掺杂量、掺杂碱金属离子种类等对产物发光性能的影响。利用XRD、SEM、DRS、PL等对产物进行表征。XRD结果表明:产物CaWO_4:Dy^(3+),M^+(M=Li,Na,K)为四方晶系结构;在波长为256 nm激发下,CaWO_4:Dy^(3+),M^+(M=Li,Na,K)荧光粉,在574 nm处显现出强发射峰,其发光强度相对未掺杂碱金属离子的CaWO_4:Dy^(3+)发光强度明显提高,其中多面体CaWO_4:Dy^(3+),Li^+是CaWO_4:Dy^(3+)发光强度的3倍。The polyhedron CaWO4:Dy^3+,M^+(M=Li,Na,K) phosphors were synthesized by solvothermal method.The effects of the ratio percent of Dy^3+ and Li^+,the different types of alkali metals-doped on luminescence of CaWO4:Dy^3+,M^+(M=Li,Na,K) were investigated in detail. And the sample of structure and morphology were characterized by X-ray diffraction(XRD),field emission scanning electron microscopy(FE-SEM),UV-Vis diffuse reflectance and photoluminescence(PL). The results show that the product was polyhedron CaWO4:Dy^3+,M^+(M=Li,Na,K) with the Tetragonal structure;The Photoluminescence spectrum shows a strong PL emission peak from the production,which is mainly located in 574 nm centered. The luminescence intensity of the CaWO4:Dy^3+,M^+(M=Li,Na,K) higher than that CaWO4: Dy^3+.

关 键 词：CaWO4:Dy^3+ 溶剂热法 多面体 荧光性能 

分 类 号：TQ174.758[化学工程—陶瓷工业]