Room-temperature efficient light detection by amorphous Ge quantum wells (Articolo in rivista)

Type
Label
  • Room-temperature efficient light detection by amorphous Ge quantum wells (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1186/1556-276X-8-128 (literal)
Alternative label
  • Cosentino S, Miritello M, Crupi I, Nicotra G, Simone F, Spinella C, Terrasi A, Mirabella S (2013)
    Room-temperature efficient light detection by amorphous Ge quantum wells
    in Nanoscale research letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cosentino S, Miritello M, Crupi I, Nicotra G, Simone F, Spinella C, Terrasi A, Mirabella S (literal)
Pagina inizio
  • 128 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 8 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Univ Catania, MATIS IMM CNR, I-95123 Catania, Italy [ 2 ] Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy [ 3 ] IMM CNR, I-95121 Catania, Italy (literal)
Titolo
  • Room-temperature efficient light detection by amorphous Ge quantum wells (literal)
Abstract
  • In this work, ultrathin amorphous Ge films (2 to 30 nm in thickness) embedded in SiO2 layers were grown by magnetron sputtering and employed as proficient light sensitizer in photodetector devices. A noteworthy modification of the visible photon absorption is evidenced due to quantum confinement effects which cause both a blueshift (from 0.8 to 1.8 eV) in the bandgap and an enhancement (up to three times) in the optical oscillator strength of confined carriers. The reported quantum confinement effects have been exploited to enhance light detection by Ge quantum wells, as demonstrated by photodetectors with an internal quantum efficiency of 70%. (literal)
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