Journal
CERAMICS INTERNATIONAL
Volume 36, Issue 1, Pages 333-338Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2009.09.010
Keywords
Amorphous silica; Nanoparticles; Co-condensation; Photoluminescence; Optical absorption
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Funding
- Ministry of Higher Education [FRGS-203/PKIMIA/671174]
- Universiti Sains Malaysia (USM)
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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.
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