纳米Y_2O_3∶Eu^(3+)超声辐射沉淀制备及其性能研究  

Ultrasonic radiation precipitation preparation and luminescence characterization of nanometer Y_2O_3∶Eu^(3+)

作　　者：周建国[1] 李振泉[1] 赵凤英[1] 高世扬[1] 

机构地区：[1]河南师范大学化学与环境科学学院

出　　处：《化学研究与应用》2004年第2期198-200,共3页Chemical Research and Application

基　　金：河南省自然科学基金 (0 1110 3 0 2 0 0 ) ;河南省教育厅基金 (199915 0 0 2 9;2 0 0 0 15 0 0 3 8);河南省高校青年骨干教师基金资助

摘　　要：采用超声辐射沉淀法以草酸为沉淀剂制备出纳米Y2 O3 ∶Eu3 + 粉体。利用XRD、TG DTA、TEM等手段对其进行了表征 ,并对其光谱特性进行了研究。结果表明 :将超声辐射引入普通沉淀法中 ,可显著提高粉体性能 ,所得纳米Y2 O3 ∶Eu3 + 为球形 ,粒度分布均匀 ,粒径约为 38～ 4 5nm ,与微米晶相比 ,该纳米晶的发射光谱发生蓝移 ,激发光谱发生红移。By using oxalic acid as precipitant,nanometer Y_2O_3∶Eu^(3+) was prepared by ultrasonic radiation precipitation method.The synthetic process and properties of nanometer Y_2O_3∶Eu^(3+) was studied by XRD,TG-DTA and TEM.The spectra were investigated.The results indicate that it could improve the properties of the powder when ultrasonic radiation was introduced into precipitation.The product has an average diameter of 38-45 nm with good dispersion and spherical shaped.Compared with the micron-scale Y_2O_3∶Eu^(3+),the main excitation peak of the sample is around 255nm,resulting in a red shift,and the blue shift was observed in the emission spectrum.

关 键 词：纳米銪掺杂氧化钇 超声辐射沉淀 制备 光谱特性 红色荧光体 

分 类 号：TN104.3[电子电信—物理电子学]