中国物理B ›› 2013, Vol. 22 ›› Issue (2): 27804-027804.doi: 10.1088/1674-1056/22/2/027804
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
胡皓阳a, 夏海平a, 胡建旭a, 张约品a, 江浩川b, 陈红兵c
Hu Hao-Yang (胡皓阳)a, Xia Hai-Ping (夏海平)a, Hu Jian-Xu (胡建旭)a, Zhang Yue-Pin (张约品)a, Jiang Hao-Chuan (江浩川)b, Chen Hong-Bing (陈红兵)c
摘要: Optical absorption, excitation, and fluorescence were investigated in Eu ion-doped CdWO4 single crystal grown by a modified Bridgman method. The results indicate that Eu2+ and Eu3+ ions coexist in CdWO4 crystal and an energy transfer occurs between these Eu2+ and Eu3+ ions. When the crystal is excited by 266-nm light, the energy corresponding to the 4f65d to 8S7/2 transition of Eu2+ ions results in the excitation of the Eu3+ ions to the 5DJ level. The effect on fluorescence of annealing in oxygen at various temperatures was investigated. The excitation intensity of Eu2+ ions at 266 nm decreases as annealing temperature increases from 300 K to 1073 K, but it remains at a certain equilibrium level when the annealing temperature is further increased.
中图分类号: (Other solid inorganic materials)