YXO4（X=Nb,V）的结构与基质发光  

Structure and Host Luminescence of YXO4（X=Nb,V）

作　　者：王洪杰[2] 朱重阳 张粟[1] 庞然[1] 姜丽宏[1] 李达[1] 刘贯宇 蔡吉泽 冯婧[1] 李成宇[1] WANG Hongjie;ZHU Chongyang;ZHANG Su?;PANG Ran;JIANG Lihong;LI Da;LIU Guanyu;CAI Jize;FENG Jing;LI Chengyu(State Key Laboratory of Rare Earth Resources Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;Graduate School of Jilin University of Architecture,Changchun 130118,China)

机构地区：[1]中国科学院长春应用化学研究所,稀土资源利用国家重点实验室,长春 130022 [2]吉林建筑大学研究生学院,长春 130118

出　　处：《高等学校化学学报》2019年第12期2448-2455,共8页Chemical Journal of Chinese Universities

基　　金：国家重点研发计划项目(批准号:2016YFB0701003);中科院青年创新促进会项目资助

摘　　要：采用高温固相法制备了一系列YNb1-xO4∶xV样品,通过连续改变Nb和V的比例获得了具有不同结构的材料.研究发现,VO4^3-与NbO4^3-基团的发光分别位于约420和400 nm处,但是YNbO4中掺杂少量的V^5+和YVO4中掺杂少量的Nb^5+对发光的影响明显不同.通过连续改变V和Nb的比例,其发光性质并不能连续从一种发光变为另一种发光,而是在某一组成时达到最低.对所制备材料的结构、组成及发光变化进行了研究,结果表明存在2种发光猝灭机理.A series of YNb1-xO4∶ xV samples were synthesized by high temperature solid phase method.Different structures were obtained by continuously varying the concentrations of Nb and V. It was found that the luminescence of the VO4^3- group and the luminescence of the NbO4^3- group are located at around 420 and 400 nm. However,the small amount of V^5+ doping in YNbO4 and the small amount of Nb^5+ doping in YVO4 have significantly different effects on their luminescent behaviors. By continuously varying the ratio of V and Nb,the luminescent properties do not continuously change from one characteristic luminescence to another,but reach the minimum emission intensity at a certain composition. In this paper,the changes in structure,composition and luminescence were studied. The results show that there are two luminescence quenching mechanisms.

关 键 词：钒酸钇 褐钇铌 基质发光 四面体配位 

分 类 号：O614.5[理学—无机化学]