Revealing the sequential nature of the Si-nanocluster-Er interaction by variable pulse duration excitation (Articolo in rivista)

Type
Label
  • Revealing the sequential nature of the Si-nanocluster-Er interaction by variable pulse duration excitation (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Pacifici D., Lanzano L., Franzo G., Priolo F., Iacona F. (2005)
    Revealing the sequential nature of the Si-nanocluster-Er interaction by variable pulse duration excitation
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pacifici D., Lanzano L., Franzo G., Priolo F., Iacona F. (literal)
Pagina inizio
  • 045349 (literal)
Pagina fine
  • 045349 (literal)
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  • 72 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • Catania Univ, MATIS, INFM, Catania, I-95123 Italy; Catania Univ, Dipartimento Fis & Aston, Catania, I-95123 Italy; CNR, IMM, Sez Catania, Catania, I-95121 Italy (literal)
Titolo
  • Revealing the sequential nature of the Si-nanocluster-Er interaction by variable pulse duration excitation (literal)
Abstract
  • The sequential nature of the Si-nanocluster-Er interaction is investigated by studying the time evolution of the Er luminescence intensity at 1.54 mu m, after exciting the system through high-power optical pulses with different time duration, in the range between 200 ns and 55 ms. It is shown that while Si nanocrystals and Er ions separately embedded in the SiO2 matrix can be approximated by an effective two level model, the Er-doped Si nanocluster system behaves differently under short pulse excitation. Indeed, for time durations shorter than the mean time between two successive excitations of a Si nanocluster, the number of excitable Er ions is shown to be limited by the total number of sensitizing centers and by the finite energy transfer time. (literal)
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