NaLa_(1-x)Tb_x(MoO_4)_2的燃烧法制备及发光性能研究  

Combustion Synthesis and Luminescence Properties of NaLa_(1-x)Tb_x(MoO_4)_2 Phosphor

作　　者：谢倩[1] 蒲锡鹏[1] 钱先华[1] 张大凤[1] 邓爱霞[1] 王自红[1] 孙腾[1] 陈维龙[1] 

机构地区：[1]聊城大学材料科学与工程学院,山东聊城252000

出　　处：《青岛科技大学学报（自然科学版）》2012年第2期144-148,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：聊城大学大学生科技文化创新基金项目(SRT11007CL2)

摘　　要：采用燃烧法合成了系列NaLa(1-x)Tbx(MoO4)2绿色荧光粉。分别采用XRD和荧光分光光度计表征了合成样品的结构和发光性能,系统研究了煅烧温度及Tb3+的掺杂量对所得荧光粉物相组成及发光性能的影响。结果表明:采用燃烧法制备的NaLa(1-x)-Tbx(MoO4)2绿色荧光粉结晶良好、晶相单一、在280nm波长激发下具有良好的发光性能。确定煅烧温度为1 000℃,Tb3+的掺杂量x=0.5时发光效果最强。作为对照,采用高温固相法合成了NaLa0.5Tb0.5(MoO4)2荧光粉,结果表明,采用燃烧法合成的NaLa0.5-Tb0.5(MO4)2荧光粉具有更高的发光强度,并且大大缩短了煅烧时间。The green phosphors NaLa（1-x）Tbx（MoO4）2 with different concentrations of Tb3＋ were synthesized via the combustion synthesis method.The phase composition and optical properties of as-synthesized samples were studied by X-ray powder diffraction and photoluminescence spectra.The influences of processing parameters,such as synthesis temperature and the concentration of Tb3＋ on phase compositions and luminescent properties are investigated systematically.The results show that the green phosphors NaLa（1-x）Tbx（MoO4）2synthesized at 1 000℃ and x=0.5 exhibits the strongest green emission under 280 nm excitation.As a comparison,NaLa0.5Tb0.5（MoO4）2was prepared by the solid-state reaction method.The results show that： at the same temperature,the green phosphor NaLa0.5Tb0.5（MoO4）2 synthesized via the combustion synthesis method not only has the stronger emission intensity but also greatly reduces the calcination time.

关 键 词：燃烧法 NaLa(1-x)Tbx(MoO4)2 荧光粉 发光性能 

分 类 号：O482.31[理学—固体物理]