High-efficiency silicon-compatible photodetectors based on Ge quantum dots (Articolo in rivista)

Type
Label
  • High-efficiency silicon-compatible photodetectors based on Ge quantum dots (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.3597360 (literal)
Alternative label
  • Cosentino S, Liu Pei, Le Son T, Lee S, Paine D, Zaslavsky A, Pacifici D, Mirabella S, Miritello M, Crupi I, Terrasi A (2011)
    High-efficiency silicon-compatible photodetectors based on Ge quantum dots
    in Applied physics letters; American Institute of Physics, Melville [NY] (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cosentino S, Liu Pei, Le Son T, Lee S, Paine D, Zaslavsky A, Pacifici D, Mirabella S, Miritello M, Crupi I, Terrasi A (literal)
Pagina inizio
  • 221107 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 98 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Brown Univ, Sch Engn, Providence, RI 02912 USA 2. Univ Catania, MATIS IMM CNR, I-95123 Catania, Italy 3. Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy (literal)
Titolo
  • High-efficiency silicon-compatible photodetectors based on Ge quantum dots (literal)
Abstract
  • We report on high responsivity, broadband metal/insulator/semiconductor photodetectors with amorphous Ge quantum dots (a-Ge QDs) as the active absorbers embedded in a silicon dioxide matrix. Spectral responsivities between 1-4 A/W are achieved in the 500-900 nm wavelength range with internal quantum efficiencies (IQEs) as high as similar to 700%. We investigate the role of a-Ge QDs in the photocurrent generation and explain the high IQE as a result of transport mechanisms via photoexcited QDs. These results suggest that a-Ge QDs are promising for high-performance integrated optoelectronic devices that are fully compatible with silicon technology in terms of fabrication and thermal budget. (literal)
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