Upconversion Emission Properties of Erbium-and Ytterbium-Doped Potassium Lithium Tantalate Niobate Ceramics  

作　　者：LI Lei ZHOU Zhong-Xiang YANG Wen-Long LI Huan WU Ye 李磊;周忠祥;杨文龙;李欢;吴烨(Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology,Hohai University,Changzhou 213022;Department of Physics,Harbin Institute of Technology,Harbin 150001)

机构地区：[1]Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology,Hohai University,Changzhou 213022 [2]Department of Physics,Harbin Institute of Technology,Harbin 150001

出　　处：《Chinese Physics Letters》2013年第12期116-119,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11074059;the Fundamental Research Funds for the Central Universities of China under Grant No Bzx/13b101-06.

摘　　要：We investigate the luminescence properties of erbium-doped and erbium-ytterbium-codoped potassium lithium tantalate niobate ceramics prepared by the solid phasesyntheses method.The crystalline structure and surface morphology of these ceramics are tested by x-ray diffraction and scanning electron microscopy.The green,red,and near-infrared upconversion photoluminescence properties are analyzed by the steady-state spectra under 975 nm and 800 nm excitations.These ceramics arewell sintered and tetragonal tungsten type crystalline structure with the 4 mm point group and the P4bm space group.The Er3+upconversion emission integrated intensities increase with theincrease in Er3+ion concentration,while the green emissiondecreases with the increase in Yb^(3+)ion concentration under the 800 nm excitation.An effective energy back transfer process from the Er^(3+)^(4)S_(3/2)state to Yb^(3+)ground state plays an important role in enhancing the red emission and weakening the green emission.

关 键 词：CERAMICS CRYSTALLINE POTASSIUM 

分 类 号：TQ1[化学工程]