Influence of microstructure on voids nucleation in nanoporous Ge (Articolo in rivista)

Type
Label
  • Influence of microstructure on voids nucleation in nanoporous Ge (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.matlet.2013.01.017 (literal)
Alternative label
  • Romano L, Impellizzeri G, Grimaldi MG (2013)
    Influence of microstructure on voids nucleation in nanoporous Ge
    in Materials letters (Gen. ed.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Romano L, Impellizzeri G, Grimaldi MG (literal)
Pagina inizio
  • 74 (literal)
Pagina fine
  • 77 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 96 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Univ Catania, CNR IMM MATIS, I-95123 Catania, Italy [ 2 ] Univ Catania, Dept Phys & Astron, I-95123 Catania, Italy (literal)
Titolo
  • Influence of microstructure on voids nucleation in nanoporous Ge (literal)
Abstract
  • This paper reports about the mechanism of porous formation in bulk crystalline Ge wafers, polycrystalline and amorphous Ge thin films as a consequence of Ge+ ion implantation at 300 keV, Ge+ fluence 5 x 10(15) cm(-2) or 1 x 10(16) cm(-2). Cross-section scanning electron microscopy and Rutherford backscattering spectrometry were used to characterize the nucleation mechanism of the nanoporous structure by revealing a uniform mechanism in the amorphous Ge thin layers, and a heterogeneous growth mechanism in bulk crystalline and poly-crystalline Ge substrates. The uniform growth is due to the presence of voids distributed over all the as-deposited amorphous films, which provide nucleation sites for the formation of the porous structure. Instead, the heterogeneous growth is catalyzed by the free surface and the film/substrate interface. (literal)
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