Optical properties of amorphous organo-modified silica nanoparticles produced via co-condensation method

被引：44

作者：

Jafarzadeh, M. ^{[2
]}

Rahman, I. A. ^{[1
]}

Sipaut, C. S. ^{[2
]}

机构：

[1] Univ Sains Malaysia, Sch Dent Sci, Kubang Kerian 16150, Kelantan, Malaysia

[2] Univ Sains Malaysia, Sch Chem Sci, George Town 11800, Malaysia

来源：

CERAMICS INTERNATIONAL | 2010年 / 36卷 / 01期

关键词：

Amorphous silica; Nanoparticles; Co-condensation; Photoluminescence; Optical absorption; PHOTOLUMINESCENCE CHARACTERIZATION; SIO2; MECHANISM; DEFECT; ABSORPTION; NANOWIRES; BANDS;

D O I：

10.1016/j.ceramint.2009.09.010

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Structural defects in amorphous organo-modified silica nanoparticle have been studied via optical absorption and photoluminescence. The defect center, E', oxygen defect center (ODCs), self-trapped exciton, OH-related surface defect, hydrogen-related species and carbon-related species were found in the amino-functionalized modified silica. These interesting emitting surface centers were observed in the range of vacuum ultraviolet (VUV), UV-vis and near-IR. Raman results were also demonstrated transverse- and longitudinal-optical pairs due to the surface defect-related optical properties. (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：333 / 338

页数：6

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