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.
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页码：3858 / 3860
页数：3
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