Luminescent silicon nanocrystals produced by near-infrared nanosecond pulsed laser ablation in water

Risultato della ricerca: Articlepeer review

26 Citazioni (Scopus)

Abstract

We report the investigation of luminescent nanoparticles produced by ns pulsed Nd:YAG laser ablation of silicon in water. Combined characterization by AFM and IR techniques proves that these nanoparticles have a mean size of ∼3 nm and a core–shell structure consisting of a Si-nanocrystal surrounded by an oxide layer. Time resolved luminescence spectra evidence visible and UV emissions; a band around 1.9 eV originates from Si-nanocrystals, while two bands centered at 2.7 eV and 4.4 eV are associated with oxygen deficient centers in the SiO2 shell.
Lingua originaleEnglish
pagine (da-a)62-65
Numero di pagine4
RivistaApplied Surface Science
Volume302
Stato di pubblicazionePublished - 2014

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.1600.1600???
  • ???subjectarea.asjc.3100.3104???
  • ???subjectarea.asjc.3100.3100???
  • ???subjectarea.asjc.3100.3110???
  • ???subjectarea.asjc.2500.2508???

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