Optical spectra of silicon nanostructures from the random-matrix model

V. Akulin, E. Borsella

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We apply the method of random matrices to a calculation of the optical properties of porous silicon and silicon nanopowders, analyzing the effects of disorder on the visible luminescence properties. The maximum of the luminescence peak displays a blueshift, which adds up to the effects induced by other mechanisms, such as quantum confinement or surface passivation, and agrees with the experimental findings. The long-wavelength luminescence edge, instead, is redshifted by the presence of disorder, thus partially compensating for the gap-opening effect induced by the other mechanisms. © 1998 The American Physical Society.
Original languageEnglish
Pages (from-to)6514 - 6518
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number11
DOIs
Publication statusPublished - 1998
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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