Chemical nature of the luminescent centre in fresh and aged porous silicon layers

  • S. Gardelis
  • , U. Bangert
  • , B. Hamilton
  • , R. F. Pettifer
  • , D. A. Hill
  • , R. Keyse
  • , D. Teehan

Research output: Contribution to journalArticlepeer-review

Abstract

In this study we have used high resolution parallel electron energy loss spectroscopy (PEELS) and X-ray excited optical luminescence (XEOL) to investigate the chemical nature of the luminescence centre in fresh and aged porous silicon. We find that regardless of the non-stoichiometric oxides which were observed by PEELS in our fresh porous silicon layers, Si-Si bonded material is involved in the luminescence process. However, in the case of aged porous silicon both Si-Si and Si-O bonded material are involved.

Original languageEnglish
Pages (from-to)408-412
Number of pages5
JournalApplied Surface Science
Volume102
DOIs
Publication statusPublished - Aug 1996
Externally publishedYes

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