Optical properties of sol-gel fabricated Ni/SiO2 glass nanocomposites

被引：19

作者：

Yeshchenko, Oleg A. ^{[1
]}

Dmitruk, Igor. M. ^{[1
]}

Alexeenko, Alexandr A. ^{[2
]}

Dmytruk, Andriy M. ^{[3
]}

机构：

[1] Natl Taras Shevchenko Kyiv Univ, Dept Phys, UA-03127 Kiev, Ukraine

[2] Gomel State Tech Univ, Lab Tech Ceram & Silicates, Gomel 246746, BELARUS

[3] Tohoku Univ, Interdisciplinary Res Ctr, Aoba Ku, Sendai, Miyagi 9808578, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2008年 / 69卷 / 07期

关键词：

nanostructures; sol-gel growth; electron microscopy; optical properties; surface properties;

D O I：

10.1016/j.jpcs.2007.12.002

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nickel nanoparticles were grown in silica glass by annealing of the sol-gel prepared silicate matrices doped with nickel nitrate. TEM characterization of Ni/SiO2 glass proves the formation of isolated spherical nickel nanoparticles with mean sizes 6.7 and 20 nm depending on annealing conditions. The absorption and photoluminescence spectra of Ni/SiO2 glasses were measured. In the absorption spectra, we observed the band related to the surface plasmon resonance (SPR) in Ni nanoparticles. The broadening of SPR was observed with decrease of Ni nanoparticle size. The width of the surface plasmon band decreases 1.5 times at the lowering of temperature from 293 to 2 K because of strong electron-phonon interaction. The spectra proved the creation of nickel oxide NiO clusters and Ni2+ ions in silica glass as well. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1615 / 1622

页数：8

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