高分子网络凝胶法制备Nd∶YAG纳米粉体及其表征  

Preparation and Characterization of Nd∶YAG Nano-powders by Polyacrylamide Gel Method

作　　者：徐晶晶[1] 冯欢欢[1] 孙丛立[1] 陈寰[1] 罗建勇[1] 晋勇[1] 焦志峰[1] 龚敏[2] 孙小松[1] 刘俊刚[3] 

机构地区：[1]四川大学材料科学与工程学院,成都610064 [2]四川大学物理科学与技术学院微电子科学与技术四川省重点实验室,成都610064 [3]重庆光电技术研究所,重庆40006

出　　处：《半导体光电》2013年第3期456-459,共4页Semiconductor Optoelectronics

摘　　要：以Al(NO3)3.9H2O、Y(NO3)3.6H2O和Nd(NO3)3.6H2O为原材料,丙烯酰胺和N′N-亚甲基双丙烯酰胺为单体和网络剂,采用高分子网络凝胶法制备了Nd∶YAG纳米粉体。分别用热重-差热分析、X射线衍射、扫描电子显微镜、透射电子显微镜和荧光分光光度计对所得样品进行表征。结果表明,钇铝石榴石晶相的形成温度为880℃,粉体呈珊瑚虫状,粒径随着温度的升高而增大。Nd∶YAG纳米粉在401nm处有强烈的发光峰,可以作为紫光光源的考虑对象;另外在研究中还发现了Nd3+在YAG中的浓度猝灭现象。Using Al（NO3）3·9H2O,Y（NO3）3·6H2O and Nd（NO3）3·6H2O,acrylamide and N′N-methylene-bis-acrylamide as the starting materials,monomer and lattice reagent,respectively,the Nd∶YAG powders were prepared by polyacrylamide gel method.The prepared samples were characterized by thermo-gravimetric-differential scanning calorimetry,XRD,scanning electron microscopy,transmission electron microscopy,and photoluminescence spectroscopy.The results indicate that the formation temperature of pure YAG phase is 880 ℃.The YAG powders exhibit coral shape,and the particle size increases with the rise of temperature.The luminescence spectrum of YAG∶Nd3＋ exhibits the strongest emission peak at 401 nm.Concentration quenching effect of Nd3＋ in YAG was observed in the study.

关 键 词：Nd∶YAG 高分子网络凝胶 形貌 发光性能 

分 类 号：O614.33[理学—无机化学]