Spectroscopic evidence of the multiple-site structure of Eu3+ ions incorporated in ZnO nanocrystals

被引：85

作者：

Liu, Yongsheng ^{[1
]}

Luo, Wenqin ^{[1
]}

Li, Renfu ^{[1
]}

Chen, Xueyuan ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Natl Engn Res Ctr Optoelect Crystalline Mat, State Key Lab Strucy Chem, Fuzhou 350002, Fujian, Peoples R China

来源：

OPTICS LETTERS | 2007年 / 32卷 / 05期

关键词：

D O I：

10.1364/OL.32.000566

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Hexagonal Eu3+:ZnO nanocrystals were synthesized by a modified solgel method. By means of the site-selective spectroscopy at 10 K, two kinds of luminescence sites of Eu3+ are identified. One site exhibits a long lifetime of D-5(0) and sharp emission and excitation peaks, which are ascribed to the inner lattice site with an ordered crystalline environment. The other site associated with the distorted lattice sites near the surface shows a relatively short lifetime of D-5(0) and significantly broadened fluorescence lines. The energy transfer from the nanocrystal host to Eu3+, confirms that Eu3+ ions can, to some extent, be incorporated into the ZnO nanocrystal. (c) 2007 Optical Society of America.

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页码：566 / 568

页数：3

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