Large-scale synthesis of ultrafine Si nanoparticles by ball milling

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • C. Lam
  • Y. F. Zhang
  • Y. H. Tang
  • I. Bello
  • S. T. Lee

Detail(s)

Original languageEnglish
Pages (from-to)466-470
Journal / PublicationJournal of Crystal Growth
Volume220
Issue number4
Publication statusPublished - Dec 2000

Abstract

Si nanoparticles have been synthesized by ball-milling of graphite and SiO2 powders. The solid-phase reaction, C(graphite)+SiO2→Si+CO2, was found to be a novel technique for fabrication of ultrafine Si particles. The reduced Si in the powder assembled as nanoparticles with a wide range of diameters. Multiple-peak structures were observed in the photoluminescence spectra of the Si nanoparticles at room temperature. The peak energies were found to coincide with the PL peak pinning energies previously reported in porous Si. Thus, the fine structures of luminescence spectra could be attributed to the size quantization of the Si nanoparticles formed via solid-phase reaction during ball-milling.

Citation Format(s)

Large-scale synthesis of ultrafine Si nanoparticles by ball milling. / Lam, C.; Zhang, Y. F.; Tang, Y. H. et al.
In: Journal of Crystal Growth, Vol. 220, No. 4, 12.2000, p. 466-470.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review