Gd_2O_3:Eu^(3+)纳米棒的制备与发光性能  

Preparation and Photoluminescence Properties of Gd_2O_3:Eu^(3+) Nanorods

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

机构地区：[1]长春理工大学化学与环境工程学院,长春130022

出　　处：《高等学校化学学报》2009年第1期7-10,共4页Chemical Journal of Chinese Universities

基　　金：教育部科学技术研究重点项目(批准号:207026)资助

摘　　要：在表面活性剂辅助的水热条件下合成出尺寸均一的Gd2O3∶Eu3+纳米棒,对其结构和荧光性质进行了表征,并对其生长机理进行了初步讨论.XRD结果表明,水热前驱体样品为六方晶相的Gd(OH)3,经过灼烧之后样品为立方相的Gd2O3.TEM照片表明,所得样品为直径60nm、长度约600nm的纳米棒.荧光光谱表明,在波长为254nm的紫外光激发下,Gd2O3∶Eu3+纳米棒产生了不同于前驱体的特征红光发射,对应于Eu3+的5D0-7F2跃迁,表明Gd2O3是红色发光材料的良好基质.Gd2O3：Eu^3＋ nanorods were prepared via surfaetant-assisted hydrothermal method. The structure and photoluminescence properties of the nanorods were characterized, and the growth mechanism was discussed. XRD patterns show that the precursors are hexagonal phase Gd（OH） 3 crystals, and the samples calcined at 800℃ are cubic Gd2O3. TEM images indicate that the samples are nanorods with a diameter of 60 nm and a length of 600 nm. Photoluminescence measurements show that the Gd2O3：Eu^3＋ nanorods emit Eu^3＋ characteristic red-light due to ^5D0-^7FJ transitions under 254 nm light excitation, which is different from that of the precursor. The results indicate that Gd2O3 nanorod is a candidate as host material for Eu^3＋ luminescence.

关 键 词：Gd2O3∶Eu3+ 纳米棒 一维材料 光致发光 

分 类 号：O614.33[理学—无机化学]