Ba掺杂和烧结温度对Sr_4V_2O_9:Eu^(3+)(5%),Ba^(2+)(x%)光学性质的影响（英文）  

Luminescent properties of Sr_4V_2O_9:Eu^(3+)(5%),Ba^(2+)(x%) phosphors tuned by Ba doping and sintering temperature

作　　者：汪伟伟[1] 戴振翔[1] 郑赣鸿[1] 李勇强[1] 马永青[1] 

机构地区：[1]安徽大学物理与材料科学学院安徽省信息材料与器件重点实验室,安徽合肥230039

出　　处：《安徽大学学报（自然科学版）》2015年第5期45-49,共5页Journal of Anhui University(Natural Science Edition)

基　　金：Supported by the National Natural Science Foundation of China(11204001,11174004);Anhui Provincial Natural Science Foundation(1208085QA07,1308085MA04);the Higher Educational Natural Science Foundation of Anhui Province(KJ2013A031);Anhui University Scientific Research Fund(KYXL2012017,KYXL2013009,201410357005);"211 Project" of Anhui University(SZJYKC2013020)

摘　　要：采用水热和烧结的方法制备系列Sr4V2O9:Eu3+(5%),Ba2+(x%)(x=0,5)粉末样品.用X射线衍射和荧光分光光度计对样品的结构和光学性质进行了研究.研究结果表明Ba掺杂能提高样品的发光强度,而烧结却降低发光强度.随着烧结温度的增加,Eu离子周围的晶格畸变,导致Eu离子的磁偶极跳跃减弱并消失.Eu3＋ and Ba2＋ co-doped Sr4V2O9 samples prepared via a hydrothermal method and sintered were reported.The luminescence of phosphors induced by Ba doping and sintering temperature were investigated using photoluminescence spectra.The results indicated that the emission intensity increased with Ba2＋dopants greatly and decreased again after sintered.It indicated that the magnetic dipole transition of Eu3＋ions was low and disappear after sintered,and the crystal field surrounding of Eu3＋ions was highly changed after sintered.

关 键 词：发光材料 Ba掺杂 烧结温度 

分 类 号：O433.2[机械工程—光学工程]