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Tb3+,Yb3+共掺杂LuBO3荧光粉的下转换发光

Down-Conversion Luminescence of Tb3+,Yb3+ Co-doped LuBO3 Phosphors

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【作者】 贾海珍黄平崔彩娥王磊田跃李云青

【Author】 JIA Hai-zhen;HUANG Ping;CUI Cai-e;WANG Lei;TIAN Yue;LI Yun-qing;College of Physics and Optoelectronic Engineering,Taiyuan University of Technology;Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education;

【机构】 太原理工大学物理与光电工程学院新型传感器与智能控制教育部重点实验室

【摘要】 利用水热法成功合成了近红外量子剪裁荧光粉LuBO3∶15%Tb3+,x%Yb3+(x=0,1,2,4,8,12)。通过X射线衍射(XRD)、光致发光谱(PL)、激发谱(PLE)和荧光寿命测试了合成物质的物相结构与发光性质。在286 nm(Tb3+:7F6→5D)紫外光激发下,观察到了Tb3+:5D4→7FJ(J=6,5,4,3)可见波段特征发射光和Yb3+:2F5/2→2F7/2的近红外光。研究了Yb3+浓度与激发发射光谱和荧光寿命之间的关系,表明Tb3+和Yb3+之间存在能量传递。当Tb3+和Yb3+掺杂摩尔浓度分别为15%和2%时,近红外发射最强。计算得知,其最大下转换量子效率为160.74%。

【Abstract】 Near-infrared( NIR) quantum cutting LuBO3∶ 15% Tb3 +,x% Yb3 +( x = 0,1,2,4,8,12)phosphors were synthesized by hydrothermal method with further heat treatment. The phase constitution were analyzed systemically with the aid of X-ray diffraction( XRD). The optical properties of the Lu BO3∶ Tb3 +, Yb3 +were characterized by photoluminescence( PL), excitation spectrum( PLE) and fluorescence lifetime. The emission from5D4→7FJ( J = 6,5,4,3) of Tb3 +was observed under excitation of 286 nm,in which the dominant emission was at 543 nm. The NIR emission at around 950-1100 nm from Yb3 +:2F5 /2→2F7 /2was observed under the same excitationg. This paper studies the relationship between the Yb3 +concentration and the excitation and emission spectra and the fluorescence lifetime.The results show that the energy transfer exists between Tb3 +and Yb3 +. When doping concentration of15% for Tb3 +,2% for Yb3 +,near infrared luminescence was the strongest. The maximum quantum efficiency approaches 160. 74%.

【关键词】 水热法LuBO3量子效率荧光粉
【Key words】 hydrothermal methodLuBO3quantum efficiencyphosphor
【基金】 国家自然科学基金(510722011238);山西省自然科学基金(2014011017-03)
  • 【文献出处】 人工晶体学报 ,Journal of Synthetic Crystals , 编辑部邮箱 ,2014年12期
  • 【分类号】O482.31
  • 【被引频次】6
  • 【下载频次】193
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