Er3+-activated silica inverse opals synthesized by the sol-gel method (Articolo in rivista)

Type
Label
  • Er3+-activated silica inverse opals synthesized by the sol-gel method (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s11801-007-6194-0 (literal)
Alternative label
  • A. Chiappini, C. Armellini, A. Chiasera, M. Ferrari, Y. Jestin, E. Moser, M. Montagna, M. Mattarelli, C. Tosello, L. Zampedri,G. Nunzi Conti, S. Pelli, R.M. Almeida, G.C. Righini (2007)
    Er3+-activated silica inverse opals synthesized by the sol-gel method
    in Optoelectronics Letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Chiappini, C. Armellini, A. Chiasera, M. Ferrari, Y. Jestin, E. Moser, M. Montagna, M. Mattarelli, C. Tosello, L. Zampedri,G. Nunzi Conti, S. Pelli, R.M. Almeida, G.C. Righini (literal)
Pagina inizio
  • 184 (literal)
Pagina fine
  • 187 (literal)
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  • 3 (literal)
Rivista
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • A. Chiappini, E. Moser, M. Montagna, M. Mattarelli, C. Tosello, L. Zampedri - Dipartimento di Fisica, Università di Trento CSMFO group, Via Sommarie 14, 38050 Trento, Italy C. Armellini, A. Chiasera, M. Ferrari, Y. Jestin - CNR-IFN, Istituto di Fotonica e Nanotecnologie, CSMFO group, Trento, Italy G. Nunzi Conti, S. Pelli - Photonic Materials and Devices Laboratory, IFAC — CNR, 50019 Sesto Fiorentino, Italy R.M. Almeida - Departamento de Engenharia de Materiais/ICEMS, Instituto Superior Técnico Av. Rovisco Pais, 1049-001 Lisboa, Portugal G.C. Righini - Department of Materials and Devices, CNR, Piazzale A. Moro 7, 00185 Roma, Italy e CNR-IFAC, 50019 Sesto Fiorentino, Italy (literal)
Titolo
  • Er3+-activated silica inverse opals synthesized by the sol-gel method (literal)
Abstract
  • We present the details of the sol gel processing used to realize inverse silica opal, where the silica was activated with 0.3 mol% of Er3+ ions. The template (direct opal) was obtained assembling polystyrene spheres of the dimensions of 260 nm by means of a vertical deposition technique. The Er3+-activated silica inverse opal was obtained infiltrating, into the void of the template, the silica sol doped with Er3+ ions and subsequently removing the polystyrene spheres by means of calcinations. Scanning electron microscope showed that the inverse opals possess a fcc structure with a air hollows of about 210 nm and a photonic band gap, in the visible range, was observed from reflectance measurements. Spectroscopic properties of Er3+- activated silica inverse opal were investigated by luminescence spectroscopy, where, upon excitation at 514.5 nm, an emission of 4I13/2 ® 4I15/2 of Er3+ ions transition with a 21 nm bandwidth was observed. Moreover the 4I13/2 level decay curve presents a single-exponential profile, with a measured lifetime of 18 ms, corresponding a high quantum efficiency of the system. (literal)
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