Er^(3+)浓度对Er^(3+)/Yb^(3+)共掺氟氧化物玻璃陶瓷上下转换发光的调控(英文)  

Modulation of Up-and Down-conversion Emissions by Er^(3+) Concentration in Er^(3+)/Yb^(3+) Co-doped Oxyfluoride Glass Ceramics

作　　者：吴婷婷[1] 赵丽娟[1,2] 兰子鉴 常利芬 李一明[1] 余华[1] 

机构地区：[1]弱光非线性光子学教育部重点实验室南开大学物理科学学院,天津300071 [2]南开大学泰达应用物理研究院,天津300457

出　　处：《发光学报》2014年第2期131-136,共6页Chinese Journal of Luminescence

基　　金：国家自然科学基金国家基础人才培养基金(J1103208)资助项目

摘　　要：在980nm激光激发下,Er3+/Yb3+共掺的发光材料既可以在可见光范围产生上转换发光,也可以在近红外波段产生下转换发光,二者存在竞争关系。本文利用熔融淬火法制备了一系列掺杂不同Er3+/Yb3+浓度的氟氧化物玻璃陶瓷,测量了样品在980 nm激光激发下的上转换及下转换发射光谱。研究发现,改变Er3+的掺杂浓度可以调控上下转换的发光强度。在此基础上,提出了上下转换发光的能量传递模型。本文的研究结果有利于该类材料在不同领域中的应用。Oxyfluoride glass ceramics with different Er3+/Yb3+ concentration were prepared by the melt-quenching method. The up- and down-conversion emissions were measured under 980 nm laser excitation. It is found that the intensities of up- and down-conversion emissions can be adjusted by changing the Er3+ doping concentration. The energy transfer model of up- and down-conversion emission is proposed, which clarifies the previous disagreements about up- and down-conversion energy transfer processes. The results will be used in controlling luminescent processes at different application fields.

关 键 词：上转换 下转换 Er3+/Yb3+ 玻璃陶瓷 能量传递 

分 类 号：O482.31[理学—固体物理]