微波辅助NaGdF_4∶Yb,Er快速自组装及其光谱特性  

Rapid Self-Assemble of NaGdF_4∶Yb,Er Phosphorescent Materials by Microwave Assistant Method and Its Luminescent Properties

作　　者：田雪英[1] 刘娟[1] 李西林[1] 赵文新[1] 李灏[1] 闫景辉[1] 康振辉[2] 连洪州 

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 [2]苏州大学功能纳米与软物质材料实验室,江苏苏州215123 [3]中国科学院长春应用化学研究所稀土资源利用国家重点实验室,吉林长春130022

出　　处：《光学学报》2011年第11期226-229,共4页Acta Optica Sinica

基　　金：国家973计划(2010CB934500);国家自然科学基金项目(50702057);吉林省科技厅(20050507);吉林省教育厅重大科技支撑项目(2009JYT19)资助课题

摘　　要：通过微波辅助法快速合成NaGdF4∶Yb,Er上转换发光材料,合成时间仅25min。利用X射线衍射(XRD)、场发射扫描电镜(FE-SEM)和能谱仪(EDS)对合成的样品进行了表征,并研究了样品的上转换发光性能。结果表明,材料的晶体结构为六方晶系;颗粒形貌为球形,分散性好,粒径约为200nm;980nm激光二极管激发下,发出红光和绿光,均为双光子发射且红光强度远远大于绿光,此独特的发光特性使该样品在固体激光器和彩色显示器方面具有潜在的应用价值。The Yb3＋ and Er3＋-codoped NaGdF4 is synthesized by microwave assistant method. The reaction time is only 25 min. The synthesized phosphor is investigated by X-ray diffraction （XRD）, field emission scanning electron microscope （FE-SEM）, energy-dispersion spectrometer （EDS） and upconversion （UC） spectrum, respectively. The results show that the NaGdF4：Yb, Er phosphor possessed hexagonal crystal structure, which is basically spherical in shape. The sample is well-dispersity and its mean particle size is about 200 nm. When excited by the 980 nm laser, the NaGdF4 ： Yb, Er phosphor has shown red and green upconversion emissions. The red emission intensity is stronger than green emission. Due to the unique upconversion emission property, the as-prepared NaGdF4 ：Yb, Er might have potential application for further fundamental research and find applications in color displays and solid-state lasers.

关 键 词：激光光学 NaGdF4∶Yb Er 微波辅助法 上转换发光 

分 类 号：O614.113[理学—无机化学] O614.22[理学—化学]