(Ca(1-x-y)Lu_y)MoO4：xEu^3＋红色荧光粉的化学共沉淀合成与光致发光  

Co-precipitation Synthesis and Photoluminescence of (Ca_(1-x-y)Lu_y)MoO_4:xEu^(3+) Red Phosphors

作　　者：杨玉玲[1] 黎学明[1,2] 冯文林[3] 李武林[2] 陶传义[2] 

机构地区：[1]重庆大学化学化工学院,重庆400044 [2]重庆大学光电工程学院,光电技术及系统教育部重点实验室,重庆400044 [3]重庆理工大学应用物理学院,重庆400044

出　　处：《无机化学学报》2011年第2期276-280,共5页Chinese Journal of Inorganic Chemistry

基　　金：重庆大学211工程三期创新人才培养计划建设项目(No.S-09013);重庆市自然科学基金(No.2005BA4016);中国博士后基金(No.20100470810)项目资助

摘　　要：使用NH4HCO3-NH3.H2O混合沉淀剂,采用化学共沉淀法合成(Ca1-x-yLuy)MoO4:xEu3+红色荧光粉,通过XRD、EDS、荧光光谱和CIE色度图研究该荧光粉的晶体结构、成分组成及发光性能。结果表明,实验按照理论化学计量比成功合成了(Ca1-x-yLuy)MoO4:xEu3+红色荧光粉,该荧光粉为CaMoO4白钨矿结构;(Ca1-x-yLuy)MoO4:xEu3+具有7F0→5L6(394 nm)和7F0→5D2(465 nm)的强电子吸收,且在613 nm处可发射高强度红光,其色坐标为(0.666 5,0.332 9),明显优于传统的Y2O2S:Eu3+红色荧光粉;此外,当Lu含量为30mol%时,荧光粉发光强度最佳。Using NH4HCO3-NH3·H2O as mixed precipitator,（Ca1-x-yLuy）MoO4：xEu^3＋ red phosphors were synthesizedby co-precipitation method.The phase formation,composition and luminescence properties of（Ca1-x-yLuy）MoO4：xEu3＋ were analyzed by XRD,EDS,PL and CIE.The results show that（Ca1-x-yLuy）MoO4：xEu^3＋ red phosphors have been successfully prepared by co-precipitation method according to theoretic ratio,and the synthesized（Ca1-x-yLuy）MoO4：xEu^3＋ have scheelite structure with pure phase.The phosphors have strong electron absorbability of 7F0→5L6 and7F0→5D2 at 394 nm and 465 nm and can emit red lighting with high intensity.The CIE of（Ca1-x-yLuy）MoO4：xEu^3＋ redphosphors is（0.666 5,0.332 9）,which is better than that of traditional Y2O2S：Eu3＋ red phosphors.In addition,whenthe concentration of Lu is 30mol%,the luminescent intensity of（Ca0.55Lu0.3）MoO4：0.15Eu^3＋ is highest.

关 键 词：(Ca1-x-yLuy)MoO4∶xEu3+ 化学共沉淀 发光 红色荧光粉 

分 类 号：O611.4[理学—无机化学]