Photoluminescence of CdSe nanowires grown with and without metal catalyst (Articolo in rivista)

Type
Label
  • Photoluminescence of CdSe nanowires grown with and without metal catalyst (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Fasoli A, Colli A, Martelli F, Pisana S, Tan PH, Ferrari AC (2011)
    Photoluminescence of CdSe nanowires grown with and without metal catalyst
    in Nano research (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Fasoli A, Colli A, Martelli F, Pisana S, Tan PH, Ferrari AC (literal)
Pagina inizio
  • 343 (literal)
Pagina fine
  • 359 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 4 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England 2. Nokia Res Ctr, Cambridge CB3 0GT, England 3. CNR, Ist Microelettron & Microsistemi, I-00133 Rome, Italy 4. Chinese Acad Sci, Inst Semicond, SKLSM, Beijing 100083, Peoples R China (literal)
Titolo
  • Photoluminescence of CdSe nanowires grown with and without metal catalyst (literal)
Abstract
  • We present temperature and power dependent photoluminescence measurements on CdSe nanowires synthesized via vapor-phase with and without the use of a metal catalyst. Nanowires produced without a catalyst can be optimized to yield higher quantum efficiency, and narrower and spatially uniform emission, when compared to the catalyst-assisted ones. Emission at energies lower than the band-edge is also found in both cases. By combining spatially-resolved photoluminescence and electron microscopy on the same nanowires, we show that catalyst-free nanowires exhibit a low-energy peak with sharp phonon replica, whereas for catalyst-assisted nanowires low-energy emission is linked to the presence of nanostructures with extended morphological defects. (literal)
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