Photoluminescence spectroscopy of Er3+/Yb3+ co-activated silica-alumina monolithic xerogels (Articolo in rivista)

Type
Label
  • Photoluminescence spectroscopy of Er3+/Yb3+ co-activated silica-alumina monolithic xerogels (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s10971-004-5800-x (literal)
Alternative label
  • C.Armellini, A. Chiasera, S. Dirè, M. Ferrari, A. Martucci, M. Mattarelli, M. Montagna, E. Moser, S. Pelli, G.C. Righini, G.D. Soraru, L. Zampedri (2004)
    Photoluminescence spectroscopy of Er3+/Yb3+ co-activated silica-alumina monolithic xerogels
    in Journal of sol-gel science and technology
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C.Armellini, A. Chiasera, S. Dirè, M. Ferrari, A. Martucci, M. Mattarelli, M. Montagna, E. Moser, S. Pelli, G.C. Righini, G.D. Soraru, L. Zampedri (literal)
Pagina inizio
  • 267 (literal)
Pagina fine
  • 271 (literal)
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  • 32 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1-3 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • C. ARMELLINI AND A. CHIASERA* CNR-IFN, Institute of Photonics and Nanotechnologies, CSMFO Group, via Sommarive 14, 38050 Povo-Trento, Italy achiaser@science.unitn.it S. DIRE` Dipartimento di Ingegneria dei Materiali, Universita d` i Trento, via Mesiano 44, 38050 Povo-Trento, Italy M. FERRARI CNR-IFN, Institute of Photonics and Nanotechnologies, CSMFO Group, via Sommarive 14, 38050 Povo-Trento, Italy A. MARTUCCI Universita d` i Padova, Dipartimento di Ingegneria Meccanica Sez. Materiali, Via Marzolo 9, 35131 Padova, Italy M. MATTARELLI, M. MONTAGNA AND E. MOSER Dipartimento di Fisica and INFM, Universita d` i Trento, via Sommarive 14, I-38050 Povo-Trento, Italy S. PELLI AND G.C. RIGHINI CNR-IFAC, Institute of Applied Physics \"Nello Carrara,\" Via Panciatichi 64, 5 0127 Firenze, Italy G.D. SORARU Dipartimento di Ingegneria dei Materiali, Universita d` i Trento, via Mesiano 44, 38050 Povo-Trento, Italy L. ZAMPEDRI CNR-IFN, Institute of Photonics and Nanotechnologies, CSMFO group, via Sommarive 14, 38050 Povo-Trento, Italy; Dipartimento di Ingegneria dei Materiali, Universita d` i Trento, via Mesiano 44, 38050 Povo-Trento, Italy (literal)
Titolo
  • Photoluminescence spectroscopy of Er3+/Yb3+ co-activated silica-alumina monolithic xerogels (literal)
Abstract
  • Two Er3+/Yb3+ monolithic silica-alumina xerogels doped with different Yb3+ concentrations were prepared by sol-gel route. The samples were thermally treated in air at 950 degrees C for 120 h. and Raman and UV-visible-NIR spectroscopy were used to monitor the degree of densification of the glasses and the residual OH content. Back energy transfer from Er3+ to Yb3+ was demonstrated by measurement of Yb3+ emission upon Er3+ excitation at 514.5 nm. Photoluminescence excitation spectroscopy over the 880-1010 nm wavelength range, spanning the energy range of the Yb3+-F-2(5/2) and Er3+-I-4(11/2) excited states, was used to obtain information about the effective excitation efficiency of Er3+ ions by co-doping with Yb ions. The emission of I-4(13/2) --> I-4(15/2) of Er3+ ion transition with a 47 nm bandwidth was observed upon excitation at 514.5 nm and a lifetime of the I-4(13/2) metastable state of 8.7 ms was measured. (literal)
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