摘要
采用水热法制备了铕、钐共掺杂的钼酸锶(Sr_(1-x-y)MoO_4∶xEu^(3+),ySm^(3+))系列发光材料,对样品的晶体结构、微观形貌和发光特性进行了研究。结果表明:制备的样品均具有体心四方白钨矿结构;样品的颗粒比较均一,分散性较好,颗粒粒径1~2μm;三价稀土铕离子(Eu^(3+))和钐离子(Sm^(3+))共同掺杂样品的激发光谱由位于350~500nm的系列激发峰构成,同时存在Eu^(3+)和Sm^(3+)的特征激发峰,激发主峰位于395nm和465nm,表明样品能被近紫外光和蓝光有效激发;其发射主峰位于615nm,Sm^(3+)的掺杂能对Eu^(3+)起敏化作用,增强Eu^(3+)的红光发射强度;Eu^(3+)、Sm^(3+)的最佳掺杂量分别为x=0.04,y=0.03,制得的Sr_(1-x-y)MoO_4∶xEu^(3+),ySm^(3+)发光材料的最强相对发射强度达5000(光栅狭窄缝均为5.0测试条件下),具有较好的发光性能。
A series of europium and samarium co-doped molybdenum acid strontium（Sr（1-x-y） MoO4∶xEu^（3＋）,ySm^（3＋））red phosphors were synthesized by hydrothermal method.The crystal structure,microstructure and luminescent properties of samples were studied.It was found that all the sample powders hed the structure of body-centered quartet scheelite.The particles of samples were relatively uniform and the mean grain size was between 1~2μm.The excitation peak of Eu^（3＋）and Sm^（3＋）co-doped samples was between 350~500 nm which including both the excitation peak of Eu^（3＋）and Sm^（3＋）.The main excitation peak located at 395 nm and 465 nm that can be effectively excited by near-UV and blue light.The strongest emission peak located at 615 nm corresponding to transition of Eu^（3＋）.Furthermore,Sm^（3＋）could sensitize Eu^（3＋）to enhance the red emission intensity.The optimum concentration of Eu^（3＋）and Sm^（3＋）was found to be x=0.04,y=0.03.The strongest relative emission intensity of Sr（1-x-y） MoO4∶xEu^（3＋）,ySm^（3＋）luminescence material reached to 5000（narrow slit gratings was 5.0）,which indicated that the sample had good luminous performance.
作者
蒲勇
曹仕秀
彭玲玲
韩涛
Pu Yong Cao Shixiu Peng Lingling Han Tao(Research Institute for New Material Technology,Chongqing University of Arts and Sciences, Chongqing Key Laboratory of Micro/Nano Materials Engineering and Technology,Chongqing 402160)
出处
《化工新型材料》
CAS
CSCD
北大核心
2017年第10期127-129,共3页
New Chemical Materials
基金
重庆市教育委员会科学技术研究项目(KJ1501126)
重庆市重点实验室开放课题(2016CX06)
重庆文理学院科研项目(Y2016XC51)
