LaMgAl_(11)O_(19):Dy^(3+),Bi^(3+)的制备及其真空紫外-紫外发光性能的研究  

Preparation and the Luminescent Characterization of LaMgAl_(11)O_(19):Dy^(3+),Bi^(3+) in the Region of VUV-UV

作　　者：李峰[1] 王育华[2] 席增卫 

机构地区：[1]材料科学与工程学院西安理工大学,陕西西安710048 [2]物理科学与技术学院兰州大学,甘肃兰州730000 [3]陕西彩虹荧光材料有限公司,陕西咸阳712021

出　　处：《西安理工大学学报》2013年第3期330-333,共4页Journal of Xi'an University of Technology

基　　金：国家自然科学基金资助项目(51202189);陕西省教育厅科学技术研究计划基金资助项目(11JK0825);陕西省科学技术研究发展计划基金资助项目(2011JQ6005)

摘　　要：以常规高温固相法制备了LaMgAl11O19:0.04Dy3+,xBi3+(x=0,0.01,0.03)发光材料,研究了其真空紫外-紫外发光特性。研究结果表明Bi3+共掺杂可有效地敏化LaMgAl11O19:Dy3+位于482nm与574 nm的跃迁发射,其敏化机理为Bi3+离子在具有位于紫外区间的1S0→3P1跃迁吸收与位于真空紫外区间的1S0→1P1跃迁吸收,两者可有效地将激发光能量传递给发光中心Dy3+。Bi3＋ co-doping LaMgA111O19 ：Dy3＋ samples are prepared by the conventional solid-state syn- thesis method. Their photolumineseence properties in the region of vacuum ultraviolet-ultraviolet （VUV- UV） are studied. The results from studies exhibit that Bi3＋ can efficiently sensitize the emission transi- tions of Dy3＋ , which are located at 482 nm and 574 nm respectively. The energy transfer mechanism is also analyzed： the 1S0---3P1 and 1So--l P1 adsorption transitions of Bi3 ＋ transfer the energy of excitation light to the luminescent centers of Dy3＋ efficiently. Thus the emission intensity is improved.

关 键 词：LaMgAlllOl9 DY^3+ 真空紫外 紫外 敏化 

分 类 号：O482.31[理学—固体物理]