Time dependence and excitation spectra of the photoluminescence emission at 1.54 mu m in Si-nanocluster and Er co-doped silica (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Time dependence and excitation spectra of the photoluminescence emission at 1.54 mu m in Si-nanocluster and Er co-doped silica (Articolo in rivista) (literal)

Anno

• 2005-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/j.optmat.2004.08.029 (literal)

Alternative label

• M. Falconieri, E. Borsella, F. Enrichi, G. Franzò, F. Priolo, F. Iacona, F. Gourbilleau and R. Rizk (2005)
  Time dependence and excitation spectra of the photoluminescence emission at 1.54 mu m in Si-nanocluster and Er co-doped silica
  in Optical materials (Amst., Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• M. Falconieri, E. Borsella, F. Enrichi, G. Franzò, F. Priolo, F. Iacona, F. Gourbilleau and R. Rizk (literal)

Pagina inizio

• 884 (literal)

Pagina fine

• 889 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 27 (literal)

Rivista

• Optical materials (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 6 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 5 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• CR Casaccia, ENEA, Via Anguillarese 301, I-00060 Rome, Italy. CR Frascati, ENEA, I-00044 Frascati, Italy Univ Padua, INFM, Dip Fis, I-35131 Padua, Italy Univ Catania, INFM, I-95123 Catania, Italy Univ Catania, Dip Fis & Astron, I-95123 Catania, Italy CNR, IMM, I-95121 Catania, Italy ENSICAEN, CNRS, UMR 6176, SIFCOM, F-14050 Caen, France (literal)

Titolo

• Time dependence and excitation spectra of the photoluminescence emission at 1.54 mu m in Si-nanocluster and Er co-doped silica (literal)

Abstract

• The risetime of the 1.54 mu m luminescence emission in Er: Si-nc co-doped glasses provides information on the mechanisms leading to population of the luminescent level, i.e. on the energy transfer time. In this paper we present a detailed study of this risetime in silica glasses after excitation in the wavelength region 360-860nm by a continuously tunable pulsed Ti:Al2O3 laser. The emission risetime turns out to be dependent on the sample fabrication method used, i.e. implantation or co-sputtering and on the annealing temperature used to precipitate the silicon aggregates. The fastest energy transfer time observed in our samples is tau(tr) <= 2 mu s. The risetime was found to be weakly dependent on the excitation wavelength up to around 700mn where a sudden increase is observed. This increase is more pronounced in samples where the annealing temperature was such to produce amorphous aggregates rather than crystalline ones. The difference in the nature of electronic states excited by near-infrared pumping in the two types of samples containing crystalline or amorphous aggregates is also evidenced by CW photoluminescence excitation (PLE) measurements which reflect the absorption coefficient of the sensitizing centers. In samples containing amorphous aggregates we observe an exponential dependence of the PL emission intensity versus excitation energy, which is indicative of an Urbach tail due to the disordered structure of aggregates. In the sample containing crystalline aggregates we observe an indirect interband transition behavior, with an energy gap of 1.56eV. (literal)

Prodotto di

• Institute for microelectronics and microsystems (IMM) (Istituto)

Autore CNR

• FABIO SANTO IACONA (Persona)
• GIORGIA FRANZO' (Unità di personale interno)

Incoming links:

Autore CNR di

• GIORGIA FRANZO' (Unità di personale interno)
• FABIO SANTO IACONA (Persona)

Prodotto

• Institute for microelectronics and microsystems (IMM) (Istituto)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Optical materials (Rivista)