Dithienothiophene based Polymers as electron donor in plastic solar cells. (Articolo in rivista)

Type
Label
  • Dithienothiophene based Polymers as electron donor in plastic solar cells. (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.tsf.2007.12.077 (literal)
Alternative label
  • Millefiorini R., Kozma E., Catellani M., Luzzati S. (2008)
    Dithienothiophene based Polymers as electron donor in plastic solar cells.
    in Thin solid films (Print); Elsevier Science SA, Lausanne (Svizzera)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Millefiorini R., Kozma E., Catellani M., Luzzati S. (literal)
Pagina inizio
  • 7205 (literal)
Pagina fine
  • 7208 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • lavoro a stampa (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.sciencedirect.com/science/article/pii/S004060900702130X (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 516 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • M. Catellani, Silvia Luzzati ISMAC CNR MI S. Millefiorini, E. Kozma ISMAC CNR MI (literal)
Titolo
  • Dithienothiophene based Polymers as electron donor in plastic solar cells. (literal)
Abstract
  • In this work we have tested in bulk heterojunction solar cells a polymer with a high oxidation potential, Poly-(dithieno[3,2-b:2?,3?-d]thiophene)-3-decylthiophene (P1), as electron donor together with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as electron acceptor. We have studied the photovoltaic characteristics of solar cells made with different P1:PCBM blend composition. The incident photon-to-current efficiency spectra reaches EQEs of 40%, evidencing good charge photogeneration. The best power conversion efficiency, ? = 0.83 under AM1.5 illumination, is found for solar cells containing 67% in weight of PCBM. As expected for polymers with high oxidation potentials, the open circuit voltage Voc attains high values (Voc >= 0.8 V), independently from the photoactive blend composition, but the fill factors FF of the cells are low (FF: 0.3-0.38), evidencing poor charge transport properties. The data here reported suggest that transport features, probably arising from poor polymer hole mobility, are the main limitation for cell performances. (literal)
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