Stability of CdS nanocrystals in glass


Hayes T., Lurio L., Pant J., Persans P., Yukselici H.

JOURNAL DE PHYSIQUE IV, vol.7, pp.1101-1102, 1997 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 7
  • Publication Date: 1997
  • Doi Number: 10.1051/jp4:19972147
  • Title of Journal : JOURNAL DE PHYSIQUE IV
  • Page Numbers: pp.1101-1102

Abstract

We have measured and analyzed optical absorption and x-ray absorption spectra of CdS nanocrystals Brown by solid-state reaction in a borosilicate glass, with average crystallite radii from 1.4 to 5 nm. The first (Cd-S) and second (Cd-Cd) neighbor distances are within 0.2% of the bulk values in all cases. We establish an upper bound for the interfacial tension of 0.15 N/m. Such low interface tension suggests that glass-embedded nanocrystals are inherently more stable than bare or capped nanocrystals of the same size.