Nanosized semiconductor particles in glasses prepared by the sol-gel method: Their optical properties and potential uses

R. Reisfeld*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

96 Scopus citations

Abstract

The nanometer-sized semiconductor crystallites of CdS, CdSe, CdTe, and PbS were formed by chemical procedure in glass films prepared by the sol-gel method. The films are either pure silica, silica ormosils, zirconia or combined zirconia with ormosils. As the sizes of the nanocrystallites decrease, controlled by the preparation method, the band gap shifts to higher energies due to the quantum size effect. Spectroscopic methods of absorption and luminescence allow to determine the shift and atomic force microscopy (AFM) and transmission electron microscopy (TEM) the size of the nanoparticles. X-Ray diffraction for larger nanoparticles provides information on the crystallographic structure of the particles. The potential of the nanocrystallites embedded in glass films in nonlinear optics and electrooptic devices is discussed.

Original languageEnglish
Pages (from-to)56-61
Number of pages6
JournalJournal of Alloys and Compounds
Volume341
Issue number1-2
DOIs
StatePublished - 17 Jul 2002
EventProceedings of the 5th International Conference on Excited States of Transistion Elements - Ledek Zdroj, Poland
Duration: 6 Jun 200111 Jun 2001

Keywords

  • Cadmium selenide
  • Cadmium sulfide
  • Cadmium telluride
  • Lead sulfide
  • Nanosized semiconductors
  • Quantum size effect
  • Sol-gel films

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