固相法制备新型红色荧光粉K_6Ba_4B_8O_(19):x%Eu^(3+)的研究  

Studyon Preparation of Novel Red Fluorescent Powder of K_6Ba_4B_8O_(19):x%Eu^(3+) by Solid Phase Method

作　　者：赵亚娟[1] 王晓端 伍孟林 李兆 谢会东[1] 陈利君[1] 陈双莉[1] Zhao Yajuan;Wang Xiaoduan;Wu Menglin;Li Zhao;Xie Huidong;Chen Lijun;Chen Shuangli(School of Science, Xi ＇an University of Architecture and Technology, Xi＇an, Shaanxi 710055, China;School of Material Engineering, Xi＇an Aviation College, Xi＇an, Shaanxi 710077, China)

机构地区：[1]西安建筑科技大学理学院,陕西西安710055 [2]西安航空学院材料工程学院,陕西西安710077

出　　处：《光学学报》2018年第5期216-220,共5页Acta Optica Sinica

基　　金：国家级大学生创新训练计划(201510703137);陕西省科技厅工业攻关项目(2017GY-178);陕西省尾矿资源综合利用重点实验室开放基金(2014SKY-WK0)

摘　　要：通过固相反应法合成了一种新型硼酸盐荧光粉K_6Ba_4B_8O_(19)∶x%Eu^(3+),并测得其荧光量子效率。结果表明,实验合成了接近纯相的K_6Ba_4B_8O_(19)基质;当合成温度为750℃时,K_6Ba_4B_8O_(19)∶5%Eu^(3+)的X射线衍射谱与K_6Ba_4B_8O_(19)标准卡片符合较好;在395nm波长激发下,K_6Ba_4B_8O_(19)∶Eu^(3+)在592nm(~5D_0→~7F_1)和613nm(~5D_0→~7F_2)处分别有橘红光和红光发射峰;荧光发射强度随Eu^(3+)摩尔分数的增大而增大,当Eu^(3+)摩尔分数为6%时达到最大值。测得K_6Ba_4B_8O_(19)∶6%Eu^(3+)在激发波长395nm下的荧光量子效率值为4.51%。获得的粉体呈不规则颗粒状。The novel K6Ba4B8O19∶x%Eu^3＋ fluorescent powders are prepared by the solid phase reaction method and their fluorescence quantum efficiency is measured.The results indicate that the nearly pure phase of K6Ba4B8O19 matrix is synthesized experimentally.When the synthesis temperature is 750 ℃,the X-ray diffraction spectrum of K6Ba4B8O19∶5%Eu^3＋ is well consistent with that in the standard card of K6Ba4B8O19.Under an excitation at395 nm wavelength,the orange and the red emission peaks occur at 592 nm（^5 D0→^7 F1）and 613 nm（^5 D0→^7 F2）of K6Ba4B8O19∶Eu^3＋,respectively.The fluorescence emission intensity increases with the increase of Eu^3＋ mole fraction,and reaches the maximum when the mole fraction of Eu^3＋ is 6%.The fluorescence quantum efficiency of K6Ba4B8O19∶6%Eu^3＋ under an excitation at 395 nm is 4.51%.The obtained powders are irregularly granular.

关 键 词：材料 硼酸盐 固相法 红色荧光粉 EU^3+ 

分 类 号：TQ17[化学工程—硅酸盐工业]