Na^(+)掺杂LiNbO_(3)∶Pr^(3+)荧光粉的制备及应力传感性能  

The Preparation and Stress Sensing Properties of Na^(+)-doped LiNbO_(3)∶Pr^(3+) Phosphors

作　　者：董其铮[1] 杨富鹏 DONG Qizheng;YANG Fupeng(School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China∥State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou 730050, China)

机构地区：[1]兰州理工大学材料科学与工程学院/有色金属先进加工与回收国家重点实验室,兰州730050

出　　处：《华南师范大学学报（自然科学版）》2021年第4期24-30,共7页Journal of South China Normal University(Natural Science Edition)

基　　金：甘肃省重点研究发展计划项目(17JR7GA014)。

摘　　要：采用高温固相法制备了Na^(+)掺杂的荧光粉Li_(1-x)NaxNbO_(3)∶Pr^(3+).在不改变晶体结构的条件下,掺杂Na^(+)提高了荧光粉Li1-xNaxNbO_(3)∶Pr^(3+)蓝色光激发的发射强度,其最佳掺杂计量比x=0.05.将荧光粉负载到铝合金板上,对金属板施加拉力时,LiNbO_(3)∶Pr^(3+)的光致发光强度随应力的增大发生骤增现象.随着x的增加,骤增现象逐渐消失,因为Na^(+)的掺杂改变了Pr^(3+)周围的不对称性,影响了LiNbO_(3)∶Pr^(3+)的力诱导发光特性.Na^(+)-doped Li_(1-x)NaxNbO_(3)∶Pr^(3+) phosphors were prepared with the high temperature solid-state method.Without changing the crystal structure,the emission intensity of blue light excitation in Li1-xNaxNbO_(3)∶Pr^(3+)was improved by doping Na^(+) and the optimal stoichiometric ratio x was 0.05.Then the phosphors were bonded to the aluminum alloy plate and the photoluminescence intensity of LiNbO_(3)∶Pr^(3+) increased sharply with the increase of stress by applying tensile force to the metal plate and it gradually disappeared with the increase of the content of Na^(+)dopants because Na^(+) doping changed the asymmetry around Pr^(3+) and affected the luminescence characteristics induced by LiNbO_(3)∶Pr^(3+).

关 键 词：荧光粉 掺杂 发光性能 应力检测 性能优化 

分 类 号：TP383.2[自动化与计算机技术—计算机系统结构]