GdVO_(4)∶Bi^(3+)纳米晶的水热制备及其超宽光致发光研究  

Hydrothermal preparation of GdVO4∶Bi^(3+)nanocrystals and research of their superbroad photoluminescence

作　　者：桂卫军[1] 锁腾远 陈小玲 张晓航[1] GUI Weijun;SUO Tengyuan;CHEN Xiaoling;ZHANG Xiaohang(School of Science,Nanchang Institute of Technology,Nanchang 330099,China)

机构地区：[1]南昌工程学院理学院,江西南昌330099

出　　处：《南昌工程学院学报》2020年第6期98-101,共4页Journal of Nanchang Institute of Technology

基　　金：江西省教育厅科学技术研究项目(GJJ151095)。

摘　　要：以柠檬酸钠为络合剂和封端剂,采用水热法制备GdVO_(4)∶x%Bi^(3+)荧光粉,其中x=0.1%,0.3%,0.5%,1%,3%和5%,随后将所制备的荧光粉置于马弗炉中600℃退火2h。XRD以及TEM的分析结果表明所制备的荧光粉为四方相,且具有较好分散性。在276 nm的紫外光激发下,GdVO_(4)∶x%Bi^(3+)体现出紫外到可见(300~750 nm)的超宽光致发光。基于发射光谱可见,Bi^(3+)最佳掺杂浓度为1%,由此得到能量传递的临界距离Rc。基于CIE坐标图可见所制备的荧光粉基本体现出绿光发射。By using sodium citrate as complexing and capping agent,GdVO_(4)∶x%Bi^(3+)(x=0.1%,0.3%,0.5%,1%,3%,5%)phosphors were prepared via hydrothermal method,and then the phosphors were annealed at 600℃for 2h in muffle furnace.The analysis results of XRD and TEM show that crystalline phase of well-dispersed nanocrystals of the phosphors is tetragonal phase.The GdVO_(4)∶x%Bi^(3+)phosphors exhibit superbroad UV to visible photoluminescence under the excitation light of 276 nm,from which we can see that optimum doping concentration of Bi^(3+)is 1%,and critical distance of energy transfer Rc was also deduced.Based on the CIE coordinate diagram,it can be seen that most of the phosphors prepared show green light.

关 键 词：钒酸钆 Bi^(3+)离子 水热法 超宽光致发光 

分 类 号：O482.31[理学—固体物理]