Ce:YAG纳米粉体的合成与发光性能  

Synthesis and Luminescence Properties of Ce: YAG Nanopowders

作　　者：刘奋照[1] 王中慧[1] 薛玫[1] 霍宇平[1] 

机构地区：[1]吕梁学院化学化工系,山西吕梁033000

出　　处：《山东化工》2015年第7期10-11,15,共3页Shandong Chemical Industry

基　　金：国家级大学生创新创业训练计划项目(201410812002);山西省大学生创新创业训练项目(2014457);吕梁学院大学生创新创业训练项目(CXCYZD201402);吕梁学院校内青年基金(ZRQN201405)

摘　　要：采用尿素均相沉淀法结合CO2超临界干燥制备了1%Ce:YAG粉体,用XRD、BET、SEM和荧光分光光度计等测试手段对前驱体及煅烧样品进行表征。表明前驱体由非晶态的氢氧化物和碳酸盐组成,1100℃结晶产物为纯YAG相,未产生YAM、YAP等中间相,产物呈球形,分散均匀。与直接干燥样品相比,CO2超临界干燥样品的激发光谱和发射光谱强度均增加,并产生5nm的红移。Cerium-doped yttrium aluminum（ Ce：YAG）precursor precipitates with 1% cerium contents were synthesized by homogeneous precipitation combined with supercritical carbon dioxide fluid drying. The calcined samples were characterized by XRD,BET,SEM and fluorescence spectrophotometer. The results showed that the obtained precursor consists of amorphous hydroxides and carbonates,and converted to pure YAG at 1 100 ℃ without the formation of interphase such as YAM and YAP. The resultant powders calcined at 1100 ℃ presented sphere with good dispersity. Compared with the conventional drying samples,the fluorescence spectra showed that the emission spectra and excitation spectra intensity of l% Ce：YAG powders obtained by supercritical carbon dioxide fluid drying increased,and the 5nm bathochromic-shift was detected.

关 键 词：均相沉淀 超临界流体干燥 Ce:YAG 红移 

分 类 号：TQ174.1[化学工程—陶瓷工业]