Preparation and optical characteristics of ZnSe nanocrystals doped glass by sol-gel in situ crystallization method

被引：36

作者：

Hao, Haiyan ^{[1
]}

Yao, Xi ^{[1
]}

Wang, Minqiang ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China

来源：

OPTICAL MATERIALS | 2007年 / 29卷 / 05期

关键词：

ZnSe/SiO2; nanocomposites; sol-gel; optical absorption characteristics;

D O I：

10.1016/j.optmat.2005.09.082

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Homogeneous ZnSe nanocrystals doped SiO2, glass was successfully prepared by sol-gel in situ crystallization method. The structure of the doped ZnSe nanocrystals was studied by X-ray diffraction (XRD). ZnSe nanocrystals in silica were about 4-10 nm analysed by transmission electron microscopy (TEM), which was consistent with the results of XRD estimated using Scherrer's formular. The quantum size effect in ZnSe nanocrystals was evidenced from the blue-shifts of the optical absorption edge, and the average size of ZnSe nanocrystals was estimated by the magnitude of blue shift according to the L.E. Brus' effective mass model. The size of ZnSe nanocrystals depending on annealing time and temperature was further discussed using XRF. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：573 / 577

页数：5

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