Eu^(3+)掺杂CaO-MgO-SiO_2透明微晶玻璃的制备及表征  

Preparation and characterization of Eu^(3+):CaO-MgO-SiO_2 transparent glass-ceramics

作　　者：邹翔宇[1] 张洪波[1] 白彦君[1] 苏春辉[1] 

机构地区：[1]长春理工大学化学与环境工程学院,吉林长春130022

出　　处：《光电子．激光》2012年第12期2343-2348,共6页Journal of Optoelectronics·Laser

基　　金：教育部科学技术重点(205037);教育部博士点基金(20050186004);吉林省科技厅重点(20060323)资助项目

摘　　要：采用熔融退火技术制备了CaO-MgO-SiO2:Eu3+基质玻璃,通过在不同热处理制度下使基质玻璃受控析晶制备了CaO-MgO-SiO2:Eu3+微晶玻璃。利用差热分析、X射线衍射(XRD)分析、扫描电子显微镜(SEM)以及荧光光谱等手段研究了透明微晶玻璃的热处理工艺、晶相组成和显微结构以及荧光性能,通过析晶动力学分析了基质玻璃的析晶机理,探讨了热处理制度同基质玻璃晶化以及显微结构之间的联系。掺杂Eu3+的玻璃和微晶玻璃样品,在394nm激发下观测到其5个发射峰分别位于在578(5 D0→7F0)、592(5 D0→7F1)、615(5 D0→7F2)、644(5 D0→7F3)和693nm(5 D0→7F4),Eu3+在微晶玻璃样品中的发射峰强度均大于基质玻璃。CaO-MgOSiO2 glasses doped with Eu3＋ ions are synthesized using the conventional melting and quenching technique at a high temperature. CaO-MgO-SiO2 glasses are converted to glass ceramics by controlling the nucleation and crystallization process. The samples are characterized by differential thermal analysis, X-ray diffraction, scanning electronic microsope and fluorescence spectrometer. The effects of heat treatment process, phase composition, microstructure on optical properties of glass ceramics are studied. Through the crystallization kinetics, the substrate glass crystallization mechanism is analyzed, and the relationship between heat treatment and microstructure of glass ceramics is discussed. For Eu3＋-doped glass and glass ceramics, five emission bands centered at 578 nm （5D0→7F0 ）, 592 nm （5D0→7F1）, 614 nm （5D0→7F2）, 652 nm （5D0→7F3） and 698 nm （5D0→7F4） have been observed with 394 nm excitation wavelength. Among them,614 nm （5D0→7F2） shows bright reddish orange emission. The emission peak intensity of Eu3＋ in glass ceramics is greater than that in glass.

关 键 词：CaO-MgO-SiO2 Eu3+掺杂 透明微晶玻璃 光学性能 

分 类 号：TQ174[化学工程—陶瓷工业]