Yb^(3+)共掺杂Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+)长余辉发光材料的制备与性能研究  

Synthesis and Properties of Yb^(3+) Co-activated Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+) Long Afterglow Phosphors

作　　者：蔡永丰 刘作涛 常石岩 李锋锋 沈毅 陈晨 武鑫江 王岳 徐自林 黄春草 CAI Yong-feng;LIU Zuo-tao;CHANG Shi-yan;LI Feng-feng;SHEN Yi;CHEN Chen;WU Xin-jiang;WANG Yue;XU Zi-lin;HUANG Chun-cao(School of Materials Science and Engineering,North China University of Science and Technology,Tangshan 063210,China;Key Laboratory of Inorganic Nonmetallic Materials Hebei Province,Tangshan 063210,China;Key Laboratory of Environment Functional Materials of Tangshan City,Tangshan 063210,China)

机构地区：[1]华北理工大学材料科学与工程学院,河北唐山063210 [2]河北省无机非金属材料重点实验室,河北唐山063210 [3]唐山市环境能源材料重点实验室,河北唐山063210

出　　处：《稀有金属与硬质合金》2019年第2期45-49,共5页Rare Metals and Cemented Carbides

基　　金：国家自然科学基金(51572069;51772099);华北理工大学研究生创新项目(2018S06);华北理工大学大学生创新创业训练计划(X2018002)

摘　　要：通过高温固相法制备了Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+),Yb^(3+)长余辉发光材料。采用XRD、SEM、激发光谱、发射光谱和余辉衰减曲线对Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+),Yb^(3+)长余辉发光材料的微观结构以及光学性能进行了表征,研究结果表明Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+),Yb^(3+)长余辉发光材料的晶体结构和显微结构均未发生明显变化。Yb^(3+)的引入使得Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+)显示出更优良的荧光性能和余辉性能,不同Yb^(3+)掺量对长余辉发光材料的陷阱深度和电子传输速率有显著影响。实验表明,当Yb^(3+)掺杂量为0.03时,Sr_2MgSi_2O_7∶Eu^(2+),Dy^(3+),Yb^(3+)的荧光光谱相对强度最强,且表现出最佳的余辉衰减性能。Sr2MgSi2O7∶Eu2+,Dy3+,Yb3+long afterglow phosphors were prepared via high-temperature solid state reaction.Microstructure and optical properties of Sr2MgSi2O7∶Eu2+,Dy3+,Yb3+long afterglow phosphors were characterized through XRD,SEM,excitation spectrum,emission spectrum and decay curves.The results show that the crystal structure and microstructure of Sr2MgSi2O7∶Eu2+,Dy3+,Yb3+have not changed significantly.The addition of Yb3+ions shows a remarkable change in fluorescent properties and afterglow performance.The introduction of Yb3+makes Sr2MgSi2O7∶Eu2+,Dy3+,Yb3+have better fluorescence performance and afterglow properties.Different Yb3+doping amounts have a significant effect on the trap depth and electron transport rate of the long afterglow phosphors.When the doping amount of Yb3+equals to 0.03,experiments show that the Sr2MgSi2O7∶Eu2+,Dy3+,Yb3+has the strongest fluorescence intensity and the best afterglow attenuation performance.

关 键 词：SR2MGSI2O7 稀土元素镱 高温固相法 长余辉发光材料 荧光性能 

分 类 号：O482.31[理学—固体物理] TQ422[理学—物理]