发光学报, 2009, 30 (4): 554, 网络出版: 2009-12-30
温度对长余辉发光玻璃发光性能的影响
TemperatureImpactonLuminescencePerformancesof LonglastingAfterglowGlas
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455,515 nm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150 K附近开始增加,并在275 K达到最大;Dy3+离子是造成空穴陷阱的主要原因。
Abstract
A series of luminosilicate glass samples doped with Eu2+ and Dy3+ were prepared under reducing atmosphere. The impacts of temperatures on luminescence performances 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.
吕昊, 刘爱梅, 熊平凡, 易熙农, 张希艳. 温度对长余辉发光玻璃发光性能的影响[J]. 发光学报, 2009, 30(4): 554. LU Hao, LIU Ai-mei, XIONG Ping-fan, YI Xi-nong, ZHANG Xi-yan. TemperatureImpactonLuminescencePerformancesof LonglastingAfterglowGlas[J]. Chinese Journal of Luminescence, 2009, 30(4): 554.