【摘要】 制备了发光性能良好的SrAl₂O₄:Eu²⁺材料,对其激发光谱、发射光谱和长余辉曲线进行了测试与分析讨论,结果表明长余辉衰减符合函数L=ct^-α（α=0.754）形式。讨论了SrAl₂O₄:Eu²⁺材料的长余辉机理,指出长余辉应来自陷阱对空穴的俘获与缓慢释放。发现了SrAl₂O₄:Eu²⁺材料的力致发光性能并分析了其可能原因。更多还原

【Abstract】 SrAl2O4:Eu2+ with optimum luminescence properties was prepared.The excitation spectrum,theemission spectrum and the long decay curve were measured and analyzed.The results showed that the long decay curve had the form L = ct-α(α=0.754).The long afterglow mechanisms of SrAl2O4 :Eu2+ were also discussed.It must have arisen from the capture and release of the hole by the trap.The stress-induced luminescence was observed here,and possible reasons were suggested.更多还原