光学基质粉体YAG及荧光粉体Ce:YAG的制备与表征  

Preparation and characterization of optical substrate powder YAG and phosphors Ce:YAG

作　　者：古映莹[1] 胡盛青[1] 周建良[1] 王曼娟[1] 

机构地区：[1]中南大学化学化工学院,长沙410083

出　　处：《化工新型材料》2009年第12期82-84,共3页New Chemical Materials

摘　　要：采用共沉淀法制备出尺寸分布均匀、分散性良好的立方相钇铝石榴石(YAG)与Ce:YAG纳米粉体。考察了煅烧温度和时间对粉体物相和颗粒大小的影响及Ce3+的掺杂量对Ce:YAG粉体的荧光光谱的影响。借助IR、XRD、BET、SEM和荧光分析仪等测试手段对前驱体、YAG及Ce:YAG纳米粉体进行了表征与分析。结果表明:共沉淀前驱体经900℃煅烧2h后可得到纯立方相的YAG(Ce:YAG)纳米粉体;所得Ce:YAG粉体具有较好的荧光特性且Ce3+的掺杂量增加会造成其荧光光谱红移。Cubic phase Y3 Al5 O12 （YAG） and Ce-doped Y3Al5 O12 （Ce： YAG） nano-size powders with uniformly and well-distributed were synthesized by coprecipitation method. The effects of calcining temperature and calcining time on the phase and particle size of YAG powder and the doping content of Ce^3＋ on the fluorescence spectra of Ce： YAG powder were investigated. The precursor , YAG and Ce.. YAG powders were characterized by IR, XRD, BET, SEM and fluorescence spectroscopy. The results showed that pure cubic phase YAG（Ce： YAG） can be obtained after calcining the precursor for 2h at 900℃, the Ce：YAG powder obtained had good fluorescence and the increase of doping content of Ce^3＋ will result in redshift of it＇s fluorescence spectra.

关 键 词：钇铝石榴石 掺铈钇铝石榴石 共沉淀法 荧光粉体 

分 类 号：O614.3[理学—无机化学]