Paper Title:
Defect-Induced Photoluminescence of Powdered Silica Glass
  Abstract

Visible photoluminescence was generated in standard soda-lime-silica glass powder, mechanically milled in a high-energy attrition mill. The broad emission band maximum shows a linear dependence on the exciting wavelength, suggesting the possibility to tune the PL emission. The photoluminescence was attributed to defect generation related to unsatisfied chemical bonds due to the high surface area. Raman scattering and ultraviolet-visible optical reflectance measurements corroborate this assertion. Transmission electron microscopy measurements indicate that the powder is composed by nanocrystallites with about 10-20 nanometers immersed in an amorphous media.

  Info
Periodical
Defect and Diffusion Forum (Volumes 273-276)
Edited by
Andreas Öchsner and Graeme E. Murch
Pages
479-484
DOI
10.4028/www.scientific.net/DDF.273-276.479
Citation
P. S. Pizani, M.R. Joya, F.M. Pontes, L.P.S. Santos, M. Godinho Jr, E.R. Leite, E. Longo, "Defect-Induced Photoluminescence of Powdered Silica Glass", Defect and Diffusion Forum, Vols. 273-276, pp. 479-484, 2008
Online since
February 2008
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Price
$32.00
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