温度对长余辉发光玻璃发光性能的影响  

Temperature Impact on Luminescence Performances of Long-lasting Afterglow Glass

作　　者：吕昊[1] 刘爱梅[1] 熊平凡[1] 易熙农[1] 张希艳[2] 

机构地区：[1]孝感学院物理系,湖北孝感432000 [2]长春理工大学材料系,吉林长春130022

出　　处：《发光学报》2009年第4期554-558,共5页Chinese Journal of Luminescence

基　　金：湖北省教育厅科研项目(Q200726002)资助

摘　　要：在还原气氛下,制备了稀土Eu2O3,Dy2O3掺杂的铝硅酸盐长余辉发光玻璃。分析了不同温度对SrAl2O4∶Eu,Dy发光玻璃的余辉发光的影响,比较了SrAl2O4∶Eu和SrAl2O4∶Eu,Dy发光玻璃的余辉发光的时间积分强度。结果表明:SrAl2O4∶Eu,Dy长余辉发光玻璃的发射光谱存在455,515nm两个发射峰值,并且其余辉衰减正比于t-0.8。SrAl2O4∶Eu,Dy长余辉发光玻璃余辉发光时间积分强度在150K附近开始增加,并在275K达到最大;Dy3+离子是造成空穴陷阱的主要原因。A series of luminosilicate glass samples doped with Eu2＋ and atmosphere. The impacts of temperatures on luminescence performances Dy3＋ were prepared under reducing of long-lasting afterglow glass were analyzed. The time-integrated intensities of afterglow in SrAl2O4： Eu and SrAl2O4： Eu, Dy long-lasting afterglow glasses were compared. Results showed the emission spectra have two broad bands peaked at 455 and 515 nm and the afterglow decay is in proportion to t-0.8. The time-integrated intensity of afterglow increases at around the temperature of 150 K, and reaches the maximum at around 275 K. The hole traps originate from Dy3＋ ions.

关 键 词：长余辉发光玻璃 时间积分强度 余辉衰减 

分 类 号：O482.31[理学—固体物理]