【摘要】 研究鳞石英结构碱土铝酸盐ＭＡｌ２Ｏ４Ｅｕ２＋、ＲＥ３＋（Ｍ＝Ｍｇ，Ｃａ，Ｓｒ，Ｂａ；ＲＥ＝Ｙ，Ｌａ，Ｃｅ，Ｐｒ，Ｎｄ，Ｓｍ，Ｇｄ，Ｔｂ，Ｄｙ，Ｈｏ，Ｅｒ，Ｔｍ，Ｙｂ，Ｌｕ）的荧光及长余辉发光性质．其发光由Ｅｕ２＋的４ｆ－５ｄ跃迁产生．ＲＥ３＋作为辅助激活离子，提供合适的陷阱能级．即使用ＲＥ３＋的特征波长激发，在ＭＡｌ２Ｏ４Ｅｕ２＋、ＲＥ３＋的发光中也观察不到ＲＥ３＋的发光．基于其荧光，热释光，Ｘ－射线，红外光谱等实验结果，分析这一结构对稀土发光的影响，并总结其发光规律更多还原

【Abstract】 The luminescent and long phosphorescent properties of M Al 2O 4∶Eu 2+ 、 RE 3+ ( M =Mg, Ca, Sr, Ba; RE=Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) with distorted stuffed tridymite were researched. The luminescence attributed to the 4f 5d transition of Eu 2+ . The incorporation of RE 3+ ion into the M Al 2O 4∶Eu 2+ system was as the auxiliary activator which provided the proper trapping levels. We could not see the luminescence of RE 3+ though excited with the characteristic excitation wavelength of RE 3+ . We analysed the luminescent and long phosphorescent properties of this type of host codoped with rare earths, and made the conclusion that Pr, Nd, Dy, Ho, Er could effectively prolong the life time of M Al 2O 4∶Eu 2+ system. The long phosphorescent rule is Sr>CaBa.更多还原