稀土双掺LiSr4(BO3)3:Ce^3+,Tb^3+荧光粉制备及发光性能研究  

Preparation and Luminescence Properties of Rare Earth Co-doped LiSr4(BO3)3:Ce^3+,Tb^3+ Phosphors

作　　者：吴幸雅 余冬燕[2,3] Wu Xingya;Yu Dongyan(Graduate Department,Guangxi University of Science and Technology,Liuzhou 545006,China;School of Mechanical and Transportation Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]广西科技大学研究生工作处,广西柳州545006 [2]广西科技大学机械与交通工程学院,广西柳州545006 [3]桂林电子科技大学机电工程学院,广西桂林541004

出　　处：《中国稀土学报》2020年第6期730-737,共8页Journal of the Chinese Society of Rare Earths

基　　金：广西自然科学基金项目(2018GXNSFAA294120);广西科技大学科学基金项目(197313)资助。

摘　　要：稀土离子掺杂的无机发光材料已被广泛应用于各种领域中,如等离子显示板(PDPs)、场发射显示器(FEDs)、白光LED(W-LEDs)等。采用高温固相法合成了LiSr4(BO3)3:Ce^3+,Tb^3+系列蓝色荧光粉,利用Ce^3+→Tb^3+的能量传递,通过5%(摩尔分数)Ce^3+的共掺杂,可以使得LiSr4(BO3)3:0.03Tb3+荧光粉的发射强度提高13.1倍。在LiSr4(BO3)3:Ce^3+,Tb^3+荧光粉中,Ce^3+到Tb^3+的能量传递机制为电四极-电四极相互作用,能量传递效率最高可达到66.9%。在25~250℃范围内,LiSr4(BO3)3:0.05Ce^3+和LiSr4(BO3)3:0.05Ce^3+,0.03Tb^3+荧光粉的相对发射强度随着温度的升高都呈线性降低。Inorganic luminescent phosphors doped by rare-earth ions have been extensively used in various applications,such as plasma display panels(PDPs),field emission displays(FEDs),and white-light emitting diodes(W-LEDs).Blue emitting phosphors LiSr4(BO3)3:Ce^3+,Tb^3+were synthesized by high temperature solid state method.The emission intensity of Tb^3+of LiSr4(BO3)3:0.05 Ce^3+,0.03 Tb^3+phosphors was 13.1 times of LiSr4(BO3)3:0.03 Tb^3+phosphor via the energy transfer from Ce^3+to Tb^3+.The energy transfer mechanism of Ce^3+to Tb^3+was the electric quadrupole-quadrupole interaction,and the energy transfer efficiency was up to 66.9%.The relative emission intensity of LiSr4(BO3)3:0.05 Ce^3+and LiSr4(BO3)3:0.05 Ce^3+,0.03 Tb^3+phosphors decreased linearly with the increase of temperature in the range of 25~250℃.

关 键 词：荧光粉 能量传递 发光性能 稀土 

分 类 号：O482.31[理学—固体物理]