Structural and spectroscopic properties of Eu3 +-activated nanocrystalline tetraphosphates loaded in silica-hafnia thin film (Articolo in rivista)

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Label
  • Structural and spectroscopic properties of Eu3 +-activated nanocrystalline tetraphosphates loaded in silica-hafnia thin film (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jnoncrysol.2013.12.019 (literal)
Alternative label
  • Lukowiak A.; Wiglusz R.J.; Chiappini A.; Armellini C.; Battisha I.K.; Righini G.C.; Ferrari M. (2014)
    Structural and spectroscopic properties of Eu3 +-activated nanocrystalline tetraphosphates loaded in silica-hafnia thin film
    in Journal of non-crystalline solids; Elsevier, New York (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Lukowiak A.; Wiglusz R.J.; Chiappini A.; Armellini C.; Battisha I.K.; Righini G.C.; Ferrari M. (literal)
Pagina inizio
  • 32 (literal)
Pagina fine
  • 35 (literal)
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  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84891524233&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 401 (literal)
Rivista
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  • 4 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • IFN-CNR, CSMFO Lab., via alla Cascata 56/c, Povo, 38123 Trento, Italy; Institute of Low Temperature and Structure Research, PAS, Okolna 2 St, 50-422 Wroclaw, Poland; FBK Center for Materials and Microsystems, via Sommarive 18, Povo, 38123 Trento, Italy; National Research Center, El Tahrir St, 12622 Dokki, Giza, Egypt; Centro di Studi e Ricerche Enrico Fermi, Piazza del Viminale 1, 00184 Roma, Italy; IFAC-CNR, MP Lab., Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy (literal)
Titolo
  • Structural and spectroscopic properties of Eu3 +-activated nanocrystalline tetraphosphates loaded in silica-hafnia thin film (literal)
Abstract
  • Nanoparticles of lithium lanthanum tetraphosphates doped with different concentration of Eu3+ ions were synthesized. The selected tetraphosphate was used to fabricate a transparent composite where nanocrystals were immobilized in a sol-gel-derived silica-hafnia amorphous film. The structural and spectroscopic properties of the systems were investigated by XRD analysis, Raman spectroscopy, and photoluminescence measurements. For all the samples with the Eu3+ ions concentration from 1 to 100 mol% the monoclinic structure with a space group C12/c1 was determined. The mean diameter of nanocrystals determined by Scherrer equation was in the range of 40-55 nm. The luminescence of 10%Eu3+:LiLa(PO3)4 in silica-hafnia matrix indicated the immobilization of Eu3+ ions into a distorted environment. The dependence of both luminescence intensity and lifetime on the Eu3+ concentration demonstrated effective reduction of concentration quenching in the tetraphosphate nanopowders. (literal)
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