Spectroscopic Signature of Trap States in Assembled CdSe Nanocrystal Hybrid Films (Articolo in rivista)

Type
Label
  • Spectroscopic Signature of Trap States in Assembled CdSe Nanocrystal Hybrid Films (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp303471s (literal)
Alternative label
  • Virgili T.; López I.S.; Vercelli B.; Angella G.; Zotti G.; Cabanillas-Gonzalez J.; Granados D.; Luer L.; Wannemacher R.; Tassone F. (2012)
    Spectroscopic Signature of Trap States in Assembled CdSe Nanocrystal Hybrid Films
    in Journal of physical chemistry. C
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Virgili T.; López I.S.; Vercelli B.; Angella G.; Zotti G.; Cabanillas-Gonzalez J.; Granados D.; Luer L.; Wannemacher R.; Tassone F. (literal)
Pagina inizio
  • 16259 (literal)
Pagina fine
  • 16263 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://pubs.acs.org/doi/abs/10.1021/jp303471s (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 116 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
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  • 1,2 : Istituto di Fotonica e Nanotecnologie (IFN) CNR, Dipartimento di Fisica, Politecnico di Milano, Piazza L. Da Vinci 32, 20133 Milano, Italy / 10 : CNST, IIT, Via Pascoli 70, 20133 Milano, Italy / 3-5 : IENI, CNR, Corso Stati Uniti 4, 35127 Padova, Italy / 3-5 : IENI, CNR,Via Cozzi 53, 20125 Milano, Italy / 6-9 : Instituto Madrileño de Estudios Avanzados (IMDEA-Nanociencia), Cantoblanco, 28049 Madrid, Spain (literal)
Titolo
  • Spectroscopic Signature of Trap States in Assembled CdSe Nanocrystal Hybrid Films (literal)
Abstract
  • View at Publisher| Export | Download | More... Journal of Physical Chemistry C Volume 116, Issue 30, 2 August 2012, Pages 16259-16263 Spectroscopic signature of trap states in assembled cdse nanocrystal hybrid films (Article) Virgili, T.a , López, I.S.a, Vercelli, B.cd, Angella, G.cd, Zotti, G.cd, Cabanillas-Gonzalez, J.e, Granados, D.e, Luer, L.e, Wannemacher, R.e, Tassone, F.b a Istituto di Fotonica e Nanotecnologie (IFN) CNR, Dipartimento di Fisica, Politecnico di Milano, Piazza L. Da Vinci 32, 20133 Milano, Italy b CNST, IIT, Via Pascoli 70, 20133 Milano, Italy c IENI, CNR, Corso Stati Uniti 4, 35127 Padova, Italy d Via Cozzi 53, 20125 Milano, Italy e Instituto Madrileño de Estudios Avanzados (IMDEA-Nanociencia), Cantoblanco, 28049 Madrid, Spain Hide additional affiliations View references (42) Abstract We report on femtosecond to millisecond pump-probe experiments performed on a multilayered structure composed by the alternation of CdSe nanocrystals (NCs) and poly(p-styrenesulphonic acid) (PSSH). We found that, after a few picoseconds of pumping at high intensity, an intense photoinduced absorption band and a strong derivative feature emerge in the differential absorption spectrum, both overlapping with the positive bleaching bands of the filled exciton states. These two former spectral features are long-living well into the millisecond range, and we attribute them to the population of charged trap states, located close to the NC surface, and thus inducing a Stark effect through the strong electric field they generate inside the NC. (literal)
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