Journal of Nanoparticle Research

, Volume 8, Issue 6, pp 1071–1074

Luminescence of porous silicon derived nanocrystals dispersed in water: dependence on initial porous silicon oxidation

  • Elena Froner
  • Roberta Adamo
  • Zeno Gaburro
  • Benno Margesin
  • Lorenzo Pavesi
  • Adelio Rigo
  • Marina Scarpa
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Abstract

Aqueous solutions of silicon nanocrystals have been obtained, by sonication, from porous Si (p-Si) aged in air for various times. The photoluminescence of these solutions changes with the aging time of p-Si. These changes correlate with nanocrystal core dimensions, i.e. with the oxidation of the nanocrystals. Infrared spectra show that the reaction with water depends on the age of the starting p-Si sample, since the native superficial oxide layer on p-Si inhibits these reactions.

Keywords

silicon nanoparticles luminescence surface groups reaction with water aging colloids 

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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • Elena Froner
    • 1
  • Roberta Adamo
    • 1
  • Zeno Gaburro
    • 1
  • Benno Margesin
    • 2
  • Lorenzo Pavesi
    • 1
  • Adelio Rigo
    • 3
  • Marina Scarpa
    • 1
  1. 1.Department of PhysicsUniversity of TrentoPovoItaly
  2. 2.ITC-IRSTPovoItaly
  3. 3.Department of Biological ChemistryPadovaItaly

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