钼酸盐掺杂稀土离子荧光粉的合成及发光性能研究  

Characterization and study of synthesis on property of BaMoO_4:Tb^(3+) phosphor

作　　者：张建夫[1] 李玉琴 李可[1] 梁桂萍[1] 王振领[3] 

机构地区：[1]周口师范学院化学系,河南周口466001 [2]周口市环境监测站,河南周口466001 [3]周口师范学院稀土功能材料及应用重点实验室,河南周口466001

出　　处：《周口师范学院学报》2014年第2期79-81,96,共4页Journal of Zhoukou Normal University

基　　金：河南省科技攻关计划项目(No.13210230491);河南省住房和城市建设厅项目(No.20137612);周口师范学院应用化学重点学科资助

摘　　要：采用溶胶凝胶法合成了BaMoO4:Tb3+绿色荧光粉,用X-射线粉末衍射仪(XRD)、扫描电子显微镜(SEM)、紫外可见分光光度计(UV-vis)和荧光分光光度计(PL)对其结构、形貌以及发光性能进行了表征和研究.同时,详细研究了煅烧温度及Tb3+浓度对所得荧光粉的组成及发光性能的影响.XRD结果表明,样品在900℃时能得到单一BaMoO4相.PL图谱上,发射峰由四组峰组成,其中最强峰在542nm处,对应于Tb3+的5 D4→7F5跃迁.BaMoO4:Tb3+在542nm处的主发射峰强度随Tb3+掺杂浓度的变化结果显示,Tb3+的最佳掺杂摩尔分数为0.05.光谱特性研究表明,BaMoO4:Tb3+是一种较好的、可应用于白光LED的紫外激发的绿色发光材料.Abstract：In this paper,BaMoO4 ：Tb^3＋ green phosphor was synthesized by sol - gel method. The structure morphology and luminescence properties of the phosphor were characterized by X- ray diffraction （XRD）, environmental scanning electron microscopy （SEM）,UV- Vis spectrometer （UV - vis） and photolumineseence spectrometer. At the same time, it was studied of the influence of the calcining heat and Tb^3＋ concentration to the luminescence properties of the phosphor. The XRD results showed that the phosphor calcinated at 900℃ can obtain pure BaMoO4 phase. Emission peaks are made up of four groups peaks, The strongest emission peak at 542 nm was correspond to the Tb^3＋5D4-^7F5 transition. The change of Tb^3＋ concertrationed on the main emission intensity of BaMoO4 ：Tb^3＋ showed that the best doping mole fraction was 0.05. The spectral characteristics showed that BaMoO4 ： Tb^3＋ was a good used green light - emitting materials for white LED.

关 键 词：BAMOO4 TB^3+ 溶胶凝胶法 绿色荧光粉 

分 类 号：O616[理学—无机化学]