Synthesis of PbSe/SiO2 and PbTe/SiO2 nanocomposites using the sol-gel process

被引：10

作者：

Bajaj, Prashant ^{[1
]}

Woodruff, Elvin ^{[2
]}

Moore, Joshua T. ^{[1
]}

机构：

[1] Tennessee State Univ, Dept Chem, Nashville, TN 37209 USA

[2] Magnify Inc, Nashville, TN USA

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2010年 / 123卷 / 2-3期

关键词：

Sol-gel; Nanocomposite; IV-VI semiconductors; PbSe nanocrystals; PbTe nanocrystals; NANOCRYSTALLINE LEAD CHALCOGENIDES; SILICA GLASSES; QUANTUM DOTS; SEMICONDUCTOR NANOCRYSTALS; PBSE; CONFINEMENT; TE;

D O I：

10.1016/j.matchemphys.2010.05.018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Homogeneous mixed-metal oxides of the general formula (Si/E/Pb)O-x, where E is either Se or Te, can be prepared using typical sol-gel processing techniques. Reduction of the in situ Se or Te ions by hydrogen affords crystalline nanoparticles of PbSe or PbTe widely dispersed throughout the silica xerogel matrix. The materials prepared contain PbSe or PbTe nanoparticles with average diameters of 8.9 nm and 7.6 nm, respectively. Precursor gels and nanocomposite materials have been characterized using powder X-ray diffraction and transmission electron microscopy. These results demonstrate a convenient method for the production of practical quantities of nanostructured lead chalcogenides in a ceramic matrix. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：581 / 584

页数：4

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