Size-Dependent Electron Transfer from Colloidal PbS Nanocrystals to Fullerene (Articolo in rivista)

Type
Label
  • Size-Dependent Electron Transfer from Colloidal PbS Nanocrystals to Fullerene (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jz100116t (literal)
Alternative label
  • Gocalinska, Agnieszka; Saba, Michele; Quochi, Francesco; Marceddu, Marco; Szendrei, Krisztina; Gao, Jia; Loi, Maria A.; Yarema, Maksym; Seyrkammer, Robert; Heiss, Wolfgang; Mura, Andrea; Bongiovanni, Giovanni (2010)
    Size-Dependent Electron Transfer from Colloidal PbS Nanocrystals to Fullerene
    in The journal of physical chemistry letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gocalinska, Agnieszka; Saba, Michele; Quochi, Francesco; Marceddu, Marco; Szendrei, Krisztina; Gao, Jia; Loi, Maria A.; Yarema, Maksym; Seyrkammer, Robert; Heiss, Wolfgang; Mura, Andrea; Bongiovanni, Giovanni (literal)
Pagina inizio
  • 1149 (literal)
Pagina fine
  • 1154 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 1 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Agnieszka Gocali?nska,+ Michele Saba,*,+ Francesco Quochi,+ Marco Marceddu,+ Krisztina Szendrei,? Jia Gao,? Maria A. Loi,? Maksym Yarema,§ Robert Seyrkammer,§ Wolfgang Heiss,§ Andrea Mura,+ and Giovanni Bongiovanni+ +Dipartimento di Fisica and SLACS-CNR/INFM, Universit?a di Cagliari, I-09042 Monserrato, Italy, ?Zernike Institute for Advanced Materials, University of Groningen, Groningen, 9747 AG, The Netherlands, and §Institute of Semiconductor and Solid State Physics, Johannes Kepler University, Austria (literal)
Titolo
  • Size-Dependent Electron Transfer from Colloidal PbS Nanocrystals to Fullerene (literal)
Abstract
  • We investigate a promising organic/inorganic hybrid composite for solution-processable optoelectronics made by lead sulphide nanoparticles and fullerene derivatives, which combine the sensitivity of PbS to the infrared spectrum with the good electron transport properties of fullerenes. Charge separation is the crucial process that determines whether the heterojunction can be the building block for devices converting photogenerated excitons into free charges flowing in a circuit. Subpicosecond spectroscopy techniques on bulk heterojunctions between PbS nanocrystals of various sizes and [6,6]-phenyl-61-butyric acid methyl ester (PCBM) were employed to reveal the ultrafast dynamics of photoexcited carriers, particularly transfer of photoexcited electrons from nanocrystals to PCBM. Electron transfer is found to critically depend on nanoparticle size, occurring for nanocrystals with diameter 4.4 nm and smaller, not for larger ones. Our findings are relevant to the engineering of hybrid solar cells and light detectors based on PbS nanocrystal/fullerene bulk heterojunctions. (literal)
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