Interplay between solid-state organization and optical properties of thin films of poly-arylene-vinylene and -difluorinated vinylene: Fullerene blends (Articolo in rivista)

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Label
  • Interplay between solid-state organization and optical properties of thin films of poly-arylene-vinylene and -difluorinated vinylene: Fullerene blends (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.synthmet.2011.07.012 (literal)
Alternative label
  • Dilonardo, Elena; Cardone, Antonio; Martinelli, Carmela; Giangregorio, Maria M.; Losurdo, Maria; Capezzuto, Pio; Farinola, Gianluca M.; Babudri, Francesco; Naso, Francesco; Bruno, Giovanni (2012)
    Interplay between solid-state organization and optical properties of thin films of poly-arylene-vinylene and -difluorinated vinylene: Fullerene blends
    in Synthetic metals; Elsevier Ltd, Oxford (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Dilonardo, Elena; Cardone, Antonio; Martinelli, Carmela; Giangregorio, Maria M.; Losurdo, Maria; Capezzuto, Pio; Farinola, Gianluca M.; Babudri, Francesco; Naso, Francesco; Bruno, Giovanni (literal)
Pagina inizio
  • 2607 (literal)
Pagina fine
  • 2611 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 161 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Note
  • Scopus (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Chimica, Università degli studi di Bari \"Aldo Moro\", Via E. Orabona 4, 70126 Bari, Italy Istituto di Metodologie Inorganiche e Plasmi, IMIP-CNR, Via E. Orabona 4, 70126 Bari, Italy Istituto di Chimica dei Composti Organometallici, ICCOM-CNR di Bari, Via E. Orabona 4, 70126 Bari, Italy (literal)
Titolo
  • Interplay between solid-state organization and optical properties of thin films of poly-arylene-vinylene and -difluorinated vinylene: Fullerene blends (literal)
Abstract
  • Nowadays considerable efforts are devoted to the synthesis of low bandgap conjugated polymers for application in organic polymer solar cells. A large variety of low bandgap polymers are prepared by alternating copolymerization of electron-donating donor and electron-withdrawing acceptor units. The interaction between these two units can reduce the polymer bandgap, increasing the sunlight absorption. Benzothiadiazole is commonly used as acceptor block unit in low bandgap polymers. In this contribution we investigate the supramolecular organization and optical properties of thin films of conjugated polymers consisting of benzothiadiazole and thiophene with electron-withdrawing difluorovinylene, and electron-donating vinylene substituents. Atomic force microscopy and spectroscopic ellipsometry are exploited for the analysis of the morphology and optical transitions, respectively. It is found that F-atoms in the vinylene unit yield a blue-shift of the absorption peaks of 0.2 eV respect to the hydrogenated polymer and an increase in the absorption coefficient of fluorinated polymers, which indicates their potential application as photovoltaic material. The morphology evolution of the conjugated polymers blended with a fullerene derivate ([6,6]-phenyl C61-butyric acid methyl ester, PCBM) is also investigated by atomic force microscopy. (literal)
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