Green ErIII luminescence in fractal ZnO nanolattices

被引：42

作者：

Kohls, M

Bonanni, M

Spanhel, L

Su, D

Giersig, M

机构：

[1] Univ Wurzburg, Lehrstuhl Silocatchem, Fak Chem & Pharm, D-97070 Wurzburg, Germany

[2] Hahn Meitner Inst Berlin GmbH, Abt Solarenergieforsch, D-14109 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 20期

关键词：

D O I：

10.1063/1.1518774

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Tetrahedral [Zn4O(OAc)(6)]-clusters grow in alcohol in the presence of Er-III and Si-IV ions to self-similar tetrahedral ZnO nanocrystals (with sizes d=5-6 nm). The nanoparticulate ZnO films prepared from these colloids show green Er-III fluorescence. The Klafter-Blumen theory is used to fit the fluorescence decay data. From this fit, the donor life time tau(D) and the exponent beta were determined to be tau(D)=4.3 mus and beta=0.289, indicating that the interior space of the codoped ZnO nanocrystallites is fractal. (C) 2002 American Institute of Physics.

引用

页码：3858 / 3860

页数：3

共 16 条

[1] Up-conversion fluorescence spectroscopy in Er3+:TiO2 planar waveguides prepared by a sol-gel process [J].