水热法制备Eu^(3+)掺杂β-Ga_2O_3粉体的结构及性能  

Structure and Properties of Eu^(3+) Doped β-Ga_2O_3 Powders by Hydrothermal Method

作　　者：王银珍[1] 段萍萍[1] 李宁[1] 周良华[1] 贺松华 孙旭炜[1] 李炜[1] 初本莉[1] 何琴玉[1] 

机构地区：[1]广东省量子调控工程与材料重点实验室华南师范大学物理与电信工程学院,广东广州510006

出　　处：《发光学报》2015年第6期605-609,共5页Chinese Journal of Luminescence

基　　金：国家自然科学基金(11474104;51372092)资助项目

摘　　要：采用水热法制备了Eu3+掺杂的β-Ga2O3粉体,利用X射线粉末衍射、场发射扫描电子显微镜、透射电子显微镜、拉曼光谱和发光光谱等测试手段对其物相、形貌和发光性能等进行了研究。结果表明:所得样品为单斜晶系的β-Ga2O3;在波长为325 nm的He-Cd激光器激发下,发射光谱的最强峰位于612 nm,属于Eu3+的5D0→7F2电偶极跃迁;在模拟太阳光照射下,样品对甲基橙具有较高的光催化降解率,经过2 h后,甲基橙的降解率可达到75%。Eu3 +doped β-Ga2O3 powders were prepared by hydrothermal method. X-ray diffraction,field emission scanning electron microscopy,transmission electron microscopy,Raman spectroscopy,and photoluminescence spectra were used to characterize the structure and properties of β-Ga2O3∶Eu3 +powders. The results reveal that the obtained samples are monoclinic β-Ga2O3 powders. Under the excitation of 325 nm He-Cd laser,the strongest emission peak is located at 612 nm,corresponding to the5D0→7F2transition of Eu3 +. β-Ga2O3∶ Eu3 +powders have high photocatalytic degradation rate for methyl orange under simulated solar irradiation,and the photocatalytic degradation rate of methyl orange is up to 75% after 2 h degradation.

关 键 词：水热法 Eu3+∶β-Ga2O3 光致发光 

分 类 号：O482.31[理学—固体物理]