水热法制备不同形貌的GdVO_4:Eu^(3+)纳米发光材料  

Hydrothermal Synthesis of GdVO_4:Eu^(3+) Luminescent Nanomaterials with Different Morphologies

作　　者：刘桂霞[1] 李若兰[1] 董相廷[1] 王进贤[1] 孙德[2] 

机构地区：[1]长春理工大学化学与环境工程学院,吉林长春130022 [2]长春工业大学化学工程学院,吉林长春130012

出　　处：《发光学报》2010年第3期385-389,共5页Chinese Journal of Luminescence

基　　金：吉林省科技发展计划(20090528)资助项目

摘　　要：采用水热法制备了不同形貌的GdVO4:Eu3+纳米晶样品,对其结构以及发光性质进行了表征。XRD结果表明:水热前驱体和经过灼烧之后样品均为四方晶系,具有锆石结构。TEM照片表明:通过改变表面活性剂分别得到了分散性良好的米粒状、六角形和球形的GdVO4:Eu3+纳米晶粒子。发光光谱表明:在288nm的紫外光激发下,不同形貌的GdVO4:Eu3+纳米晶材料均在617nm处产生特征红光发射,归属为Eu3+离子的5D0→7F2跃迁,不同形貌粒子的发光光谱的相对强度有所不同。GdVO4：Eu3＋ luminescent nanomaterials with different morphologies were prepared by hydrothermal method,and their structure and luminescent properties were characterized.XRD patterns showed that the precursors and the heat-treated samples are tetragonal phase GdVO4 crystals.TEM images indicated that the riceshaped,tetragonal-shaped and spherical GdVO4：Eu3 ＋ nanoparticles were obtained by changing different surfactant.Fluorescence spectra showed that under the excitation of 288 nm,GdVO4：Eu3 ＋ nanomaterials with different morphologies have the characteristics of red emission in 617nm,attributing to the 5D0→7F2 transition of Eu3 ＋,the intensities of the fluorescence spectra are different for different samples prepared with different surfactants.

关 键 词：GdVO4:Eu3+ 纳米晶 水热法 

分 类 号：O482.31[理学—固体物理]