CdS microcrystal-doped silica glass prepared by the sol-gel process

Masayuki Nogami, Katsumi Nagasaka, Masaki Takata

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

Glass of composition of 4.4CdO·95.6SiO2 was prepared by the sol-gel process from Si(OC2H5)4 and Cd(CH3COO)2·2H2O. CdS crystals were precipitated by exposing the glass of H2S gas, which were identified with hexagonal würtzite CdS crystals. From the X-ray diffraction analyses and transmission electron micrographs, these crystals were 2 to 6 nm in diameter. In the optical absorption spectra, the absorption edge exhibited a blue shift compared to that of the bulk CdS and its energy shift was reciprocally proportional to the square of the crystal size. Thus the quantum size effect could be found for the glass containing CdS prepared by the sol-gel process.

Original languageEnglish
Pages (from-to)101-106
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume122
Issue number1
DOIs
Publication statusPublished - 1990 Jun
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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