Li^+,Bi^3+掺杂对Lu2O3∶Ho^3+,Yb^3+粉体发光性质的影响  

Effect of Li^+,Bi^3+Doping on Luminescence Properties of Lu2O3∶Ho^3+,Yb^3+Powders

作　　者：赵海琴 王林香[1,2,3] 庹娟 ZHAO Haiqin;WANG Linxiang;TUO Juan(College of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, China;Key Laboratory of Mineral Luminescence and Microstructure, Xinjiang Normal University, Urumqi 830054, China;Laboratory of Novel Light Source and Micro/Nano-Optical, Xinjiang Normal University, Urumqi 830054, China;Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China)

机构地区：[1]新疆师范大学物理与电子工程学院,乌鲁木齐830054 [2]新疆师范大学,矿物发光及其微结构重点实验室,乌鲁木齐830054 [3]新疆师范大学,新型光源与微纳光学实验室,乌鲁木齐830054 [4]中国科学院新疆天文台,乌鲁木齐830011

出　　处：《人工晶体学报》2020年第3期433-438,445,共7页Journal of Synthetic Crystals

基　　金：新疆维吾尔自治区自然科学基金(2017D01A60);新疆维吾尔自治区研究生科研创新项目(XJ2019G229);新疆师范大学新疆矿物发光及其微结构重点实验室招标课题(KWFG1801)。

摘　　要：采用高温固相法制备了Li^+、Bi^3+掺杂Lu2O3∶Ho^3+,Yb^3+粉体。用X射线衍射仪分析了合成粉体的微结构,用场发射扫描电子显微镜观测了样品的形貌及尺寸,用紫外可见近红外荧光光谱仪分析了合成粉体的上转换发射光谱以及能级寿命。结果表明:Li^+、Bi^3+掺杂的Lu2O3∶Ho^3+,Yb^3+粉体,仍然保持Lu2O3立方相结构。Li^+或Bi^3+掺杂后,合成粉体的分散性更好,颗粒更均匀,且更加接近球形,Li^+掺杂后粉体颗粒尺寸明显增加。用980 nm激发,4%Li^+或1.5%Bi^3+掺杂后,合成粉体中Ho^3+的绿光光强分别提高了约3.9倍、2.8倍。随着Li^+浓度的增加,合成粉体中Ho^3+的5S2能级寿命先增加后减小;随着Bi^3+浓度的增加,合成粉体中Ho^3+的5S2能级寿命逐渐减小。Li^+,Bi^3+doped Lu2O3∶Ho^3+,Yb^3+powders were prepared by high temperature solid state method.The microstructure of the synthesized powder was analyzed by X-ray diffractometer.The morphology and size of the sample were observed by field emission scanning electron microscopy.The up conversion emission spectra and energy level lifetime of the synthesized powders were analyzed by UV-Vis near-infrared fluorescence spectrometer.The results show that Li^+,Bi^3+doped Lu2O3∶Ho^3+,Yb^3+powders still maintain the Lu2O3 cubic phase structure.After Li^+or Bi^3+doped,the dispersion of the synthesized powders is better,the particles are more uniform and closer to the sphere,and the particle size of Li^+doped powders increases obviously.Under the excitation of 980 nm,the green light intensity of Ho^3+in the 4%Li^+or 1.5%Bi^3+doped powders is increased by about 3.9 times and 2.8 times,respectively.With the increase of Li^+concentration,the 5S2 energy level lifetime of Ho^3+in the synthetic powders increase first and then decrease,while with the increase of Bi^3+concentration,the energy level lifetime of synthetic powders are gradually shortened.

关 键 词：Li^+、Bi^3+掺杂 Lu2O3∶Ho^3+ Yb^3+粉体 发光性质 能级寿命 

分 类 号：O482.31[理学—固体物理]