Er site in Er-implanted Si nanoclusters embedded in SiO2 (Articolo in rivista)

Type
Label
  • Er site in Er-implanted Si nanoclusters embedded in SiO2 (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Maurizio, C; Iacona, F; D'Acapito, F; Franzò, G; Priolo, F (2006)
    Er site in Er-implanted Si nanoclusters embedded in SiO2
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Maurizio, C; Iacona, F; D'Acapito, F; Franzò, G; Priolo, F (literal)
Pagina inizio
  • 205428 (literal)
Pagina fine
  • 205428 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 74 (literal)
Rivista
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  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, INFM, OGG,GILDA CRG, European Synchrotron Radiat Facil, F-38043 Grenoble, France; CNR, IMM, Sez Catania, I-95121 Catania, Italy; Univ Catania, Dipartiment Fis & Astron, I-95123 Catania, Italy; CNR, INFM, MATIS, I-95123 Catania, Italy (literal)
Titolo
  • Er site in Er-implanted Si nanoclusters embedded in SiO2 (literal)
Abstract
  • We have investigated by extended x-ray absorption fine structure spectroscopy the local order around Er atoms introduced by ion implantation in substoichiometric silica films prepared by plasma enhanced chemical vapor deposition, where Si nanoclusters have been formed by different preimplantation annealing processes. The results show that Er atoms are surrounded by a first shell of O atoms and no Er-Si direct correlations are observed; moreover, while the variation of the preimplantation annealing temperature has no effect on the Er site, it is observed that the increase of the Er concentration determines an increase of both the Er first shell coordination number and the Er-O interatomic distance, becoming more similar to those of Er2O3. In the presence of an extensive phase separation between Si and SiO2 the local environment around Er plays a crucial role on the efficiency of the photoluminescence emission at 1.54 mu m, which is significantly increased when the first shell of atoms around Er is closer to that one of Er2O3. (literal)
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