Synthesis, Characterization and Luminescent Properties of La2Zr2OT：Eu3＋ Nanorods  

La2Zr2O7：Eu3＋纳米棒的合成、表征及其荧光性能

作　　者：宋荷娟[1] 周立群[1] 黄莹[1] 李玲[1] 王婷[1] 杨兰[1] 

机构地区：[1]湖北大学有机功能分子合成与应用教育部重点实验室湖北大学化学化工学院,武汉430062

出　　处：《Chinese Journal of Chemical Physics》2013年第1期83-87,I0004,共6页化学物理学报（英文）

摘　　要：The Eu3＋-doped La2Zr207 phosphor with rod-like morphology was successfully synthesized by conventional solid state reaction and hydrothermal method. X-ray diffraction patterns, transmission electron microscopy, and photoluminescence spectra were employed to charac- terize its structure and morphology as well as luminescent properties. The results indicated that the red-emitting phosphor La2Zr207：Eu3＋ had well crystallized and belonged to the cubic structure with space group of Fd3m. The as-obtained product mainly appeared as straight nanorods with an average diameter of 47 nm and length of 50-700 nm. The pos- sible growth mechanism was also discussed. It was found that under blue excitation with a wavelength of 466 nm, the La2Zr2OT：Eu3＋ phosphor exhibited a characteristic red emission at 616 nm that was attributed to the hypersensitive 5D0--＊TF2 electric dipole transition of Eu3＋ ions. Meanwhile, it was more interesting to note that the emission of 5D1--＊TFj （J=0, 1, 2） transitions and the splitting patterns of 5D0---＋TFJ （J--l, 2, 4） transitions of Eu3＋ ions can be observed in the luminescent spectra of La2Zr207：Eu3＋. It was demonstrated that Eu3＋ preferred to occupy a low symmetry site.

关 键 词：3＋La2Zr2OT：Eu Pyrochlore structure Nanorod LUMINESCENCE 

分 类 号：O[理学]