Ho^(3+) or Tm^(3+):YAG粉体均匀制备及光谱性能研究  

Homogeneous preparation and spectral properties of Ho or Tm:YAG powders

作　　者：刘奋照 LIU Fenzhao(Department of Chemistry&Chemical Engineering,Liiliang University,Liiliang 033000,China)

机构地区：[1]吕梁学院化学化工系,山西吕梁033000

出　　处：《兵器材料科学与工程》2021年第3期114-117,共4页Ordnance Material Science and Engineering

基　　金：山西省高等学校科技创新项目(2019L0968);山西省“1331工程”重点学科建设计划(材料科学与工程);山西省高等学校优势特色专业建设项目(材料化学);校级教学改革创新项目(JXGG202019)。

摘　　要：以Y2O3、Ho2O3、Tm^(2)O3、HNO3和Al(NO3)3·9H2O为原料,尿素为沉淀剂,用均匀沉淀法制备Re_(0.03)Y_(2.97)Al_(5)O_(12)(Re^(3+)=Ho^(3+)or Tm^(3+))前驱体粉体,用CO2超临界流体干燥技术对前驱体粉体进行干燥,得到前驱体粉末,在空气中1 100℃煅烧2为纯YAG相,类花生状形貌,无团聚,分散良好。摩尔分数为1%的Ho∶YAG粉体在220 nm处室温荧光发射光谱强度最大;摩尔分数为1%的Tm∶YAG粉体荧光发射光谱发射峰在357 nm处最大。The Re_(0.03)Y_(2.97)Al_(5)O_(12)(Re^(3+)=Ho^(3+) or Tm^(3+)) precursor powders were synthesized by homogeneous precipitation method using Y_(2)O_(3),Ho_(2)O_(3),Tm^(2)O_(3),HNO_(3) and Al(NO_(3))_(3)·9H_(2)O as raw materials and urea as precipitant.The precursor powders were dried by CO_(2) supercritical fluid drying technology,finally,the obtained precursor powders were calcined at 1 100℃ for 2 h in air.The calcined samples were characterized by XRD,SEM and fluorescence spectrophotometer.The results show that Ho_(3+) or Tm^(3+):YAG powders are pure YAG phase with peanut-like morphology,no agglomeration and good dispersibility.The fluorescence emission spectra intensity of 1% Ho:YAG powders reach the maximun at 220 nm,and the emission peak of 1% Tm:YAG powders are the strongest at 357 nm.

关 键 词：Ho:YAG粉体 Tm:YAG粉体 均匀沉淀 CO2超临界流体干燥技术 光谱性能 

分 类 号：TQ174[化学工程—陶瓷工业]