Enhancement of Sm3+ emission by SnO2 nanocrystals in the silica matrix

被引：31

作者：

Mu, Jin ^{[1
]}

Liu, Lingyun ^{[1
]}

Kang, Shi-Zhao ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Dept Chem, Shanghai 200237, Peoples R China

来源：

NANOSCALE RESEARCH LETTERS | 2007年 / 2卷 / 02期

关键词：

Sm3+ ions; emission; sensibilization; SnO2; nanocrystals; silica matrix;

D O I：

10.1007/s11671-006-9037-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Silica xerogels containing Sm3+ ions and SnO2 nanocrystals were prepared in a sol-gel process. The image of transmission electron microscopy (TEM) shows that the SnO2 nanocrystals are dispersed in the silica matrix. The X-ray diffraction (XRD) of the sample confirms the tetragonal phase of SnO2. The xerogels containing SnO2 nanocrystals and Sm3+ ions display the characteristic emission of Sm3+ ions ((4)G(5/2) -> H-6(J) (J = 5/2, 7/2, 9/2)) at the excitation of 335 nm which energy corresponds to the energy gap of the SnO2 nanocrystals, while no emission of Sm3+ ions can be observed for the samples containing Sm3+ ions. The enhancement of the Sm3+ emission is probably due to the energy transfer from SnO2 nanocrystals to Sm3+ ions.

引用

页码：100 / 103

页数：4

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