Shell thickness dependence of exciton trapping in colloidal core/shell nanorods (Articolo in rivista)

Type
Label
  • Shell thickness dependence of exciton trapping in colloidal core/shell nanorods (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jlumin.2007.09.001 (literal)
Alternative label
  • Creti, A; Lomascolo, M; Leo, G; Manna, L; Anni, M (2008)
    Shell thickness dependence of exciton trapping in colloidal core/shell nanorods
    in Journal of luminescence
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Creti, A; Lomascolo, M; Leo, G; Manna, L; Anni, M (literal)
Pagina inizio
  • 361 (literal)
Pagina fine
  • 365 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.sciencedirect.com/science/article/pii/S0022231307002669 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 128 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Creti, Arianna; Lomascolo, Mauro] Ist Microelerr & Microsistemi, IMM CNR, I-73100 Lecce, Italy; [Leo, Gabriella] Inst Study nanostruct Mat, ISMN CNR, Monterotondo Stn 00016, Rome, Italy; [Manna, Liberato] Univ Lecce, Distretto Tecnol ISUFI, INFM CNR, NNL Natl Nanotechnol Lab, I-73100 Lecce, Italy; [Anni, Marco] Univ Salento, Dipartimento Ingn Innovaz, I-73100 Lecce, Italy (literal)
Titolo
  • Shell thickness dependence of exciton trapping in colloidal core/shell nanorods (literal)
Abstract
  • We quantitatively investigated, by time-resolved photoluminescence (PL) spectroscopy, the shell thickness dependence of exciton trapping and its effects on the PL quantum yield (QY) in colloidal CdSe/CdS/ZnS core/shell quantum rods. The defects passivation, due to a thin shell (0.6 monolayer), leads to a 2 times reduction of the trapping from both emitting and high-energy excited states, thus explaining the observed 4.3 times increase of the PL QY. Moreover, the QY decrease in the thick shell (1.3 monolayers) sample is fully explained in terms of increased trapping from the emitting states, which is ascribed to new defects caused by the strain relaxation at the core-shell interface. (C) 2007 Elsevier B.V. All rights reserved. (literal)
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