Thermal activation energy of crystal and amorphous nano-silicon in SiO2 matrix (Articolo in rivista)

Type
Label
  • Thermal activation energy of crystal and amorphous nano-silicon in SiO2 matrix (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Wang J., Righini M., Gnoli A., Foss S., Finstad T., Serincan U., Turan R. (2008)
    Thermal activation energy of crystal and amorphous nano-silicon in SiO2 matrix
    in Solid state communications (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Wang J., Righini M., Gnoli A., Foss S., Finstad T., Serincan U., Turan R. (literal)
Pagina inizio
  • 461 (literal)
Pagina fine
  • 464 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 147 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • fasc (11-12). Elsevier. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a) Istituto dei Sistemi Complessi-C.N.R. Sezione di Roma-Tor Vergata, Italy b) Department of Physics, University of Oslo, Norway c) Department of Physics, Middle East Technical University, 06531 Ankara, Turkey (literal)
Titolo
  • Thermal activation energy of crystal and amorphous nano-silicon in SiO2 matrix (literal)
Abstract
  • Temperature and size dependence of photoluminescence (PL) of nano-silicon embedded in SiO2 matrix samples were studied. In these measurements, four samples with deferent implantation dose showed their similar tendency. Their nano-structure was investigated by high resolution electron microscopy (HREM) and selected area diffraction (SAD) which confirmed that only those prepared with the higher Si implantation dose formed crystal nano-silicon. The further analysis of the dependence of thermal activation energy on the PL emission energy demonstrates their different behaviors. This leads to an optical method to detect the crystal nano-silicon through comparing their thermal activation energy with the Calcott model, a model that implies the emission from nanocrystallites. Furthermore, the appearance of thermal activation energy in amorphous nano-silicon is discussed in the light of recombination mode of localized carriers through the band-tail state. (literal)
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