Effect of B2O3 on long-last phosphorescence of SrAl2O4:Eu2+ ,Dy3+

摘要：

A series of Sr0.95Al2O4:Eu2+ 0.02, Dy3+ 0.03·nB2O3 (0≤n≤0.30) were prepared by a solid state reaction. The role of B2O3 on the photoluminescence (PL) properties of Sr0.95Al2O4:Eu2+ 0.02, Dy3+ 0.03 were evaluated with UV emission spectra and decay curves. B2O3 significantly improved the emission intensity and persistent luminescence time. The crystal environment and defects induced by B3+ doping were detected with IR spectra, thermoluminescence and positron annihilation (PA) methods. Some Al3+ were substituted by B3+ and a kind of defect complex cluster responsible for the long decay time was formed when the substitution of Al3+ by B3+ occurs.

关键词： SrAl2O4:Eu2+ Dy3+ Persistent Luminescence Boron Substitution

作者: Yuhua WANG Xinyu SONG Shuihe ZHANG

作者单位: Department of Material Science, School of Physics Science and Technology,Lanzhou University, Lanzhou 730000, China

会议类型: 国际会议

会议名称: 2008年中美材料国际研讨会

会议地点: 重庆

会议语种:英文

页码: 403-407

在线出版日期: 2008-06-09（万方平台首次上网日期，不代表论文的发表时间）