Multi-color long-lasting phosphorescence of rare earth ions in CdSiO3 matrix

• 作 者: LEI Bingfu Liu Yingliang YE Ze
• 机 构: Key Laboratory of Rare Earth Chemistry and Physics,Department of Chemistry
• 出 处: 科学通报
• 发表日期: 2004年期
• 关键词: cadmium metasilicate rare earth ion luminescence material afterglow
• 基金项目: 中国科学院长春应用化学研究所项目;国家自然科学基金;国家自然科学基金

A series of rare earth ions doped CdSiO3:RE3+(RE=Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) multi-color long-lasting phosphorescence phosphors are prepared by the conventional high- temperature solid-state method. The results of XRD measurement indicate that the products fired under 1050℃ for 3 h have a good crystallization without any detectable amount of impurity phase. Rare earth ions doped CdSiO3 phosphors possess excellent luminescence properties. When rare earth ions such as Y3+, La3+, Gd3+, Lu3+, Ce3+, Nd3+, Ho3+, Er3+, Tm3+ and Yb3+ are introduced into the CdSiO3 host, one broadband centered at about 420 nm resulting from traps can be observed. In the case of other earth ions such as Pr3+, Sm3+, Eu3+, Tb3+ and Dy3+, their characteristic line emitting as well as the ～420 nm broadband luminescence can be obtained. The mixture of their characteristic line emitting with the ～420 nm broadband luminescence results in various afterglow color.