Eu3+ reduction and efficient light emission in Eu2O3 films deposited on Si substrates (Articolo in rivista)

Type
Label
  • Eu3+ reduction and efficient light emission in Eu2O3 films deposited on Si substrates (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • Bellocchi G, Franzo G, Iacona F, Boninelli S, Miritello M, Cesca T, Priolo F (2012)
    Eu3+ reduction and efficient light emission in Eu2O3 films deposited on Si substrates
    in Optics express
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bellocchi G, Franzo G, Iacona F, Boninelli S, Miritello M, Cesca T, Priolo F (literal)
Pagina inizio
  • 5501 (literal)
Pagina fine
  • 5507 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.opticsinfobase.org/oe/abstract.cfm?URI=OPEX-20-5-5501 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 20 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (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
  • [ 1 ] MATIS CNR IMM, I-95123 Catania, Italy [ 2 ] Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy [ 3 ] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy [ 4 ] CNISM, I-35131 Padua, Italy (literal)
Titolo
  • Eu3+ reduction and efficient light emission in Eu2O3 films deposited on Si substrates (literal)
Abstract
  • A stable Eu3+-> Eu2+ reduction is accomplished by thermal annealing in N-2 ambient of EU2O3 films deposited by magnetron sputtering on Si substrates. Transmission electron microscopy and x-ray diffraction measurements demonstrate the occurrence of a complex reactivity at the Eu2O3/Si interface, leading to the formation of Eu2+ silicates, characterized by a very strong (the measured external quantum efficiency is about 10%) and broad room temperature photoluminescence (PL) peak centered at 590 nm. This signal is much more efficient than the Eu3+ emission, mainly consisting of a sharp PL peak at 622 nm, observed in O-2-annealed films, where the presence of a SiO2 layer at the Eu2O3/Si interface prevents Eu2+ formation. (literal)
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