All polymer bulk heterojunction solar cells with high fill factors based on blends of poly3hexylthiophene: poly(perylene diimidealtterthiophene) (Contributo in atti di convegno)

Type
Label
  • All polymer bulk heterojunction solar cells with high fill factors based on blends of poly3hexylthiophene: poly(perylene diimidealtterthiophene) (Contributo in atti di convegno) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1557/opl.2012.788 (literal)
Alternative label
  • Kotowski D.; Kozma E.; Catellani M.; Luzzati S. (2012)
    All polymer bulk heterojunction solar cells with high fill factors based on blends of poly3hexylthiophene: poly(perylene diimidealtterthiophene)
    in MRS Fall Meeting 2011, Symposium H/I - Organic Photovoltaics-Materials to Devices, Boston, USA, December 2011
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Kotowski D.; Kozma E.; Catellani M.; Luzzati S. (literal)
Pagina inizio
  • 09 (literal)
Pagina fine
  • 12 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://journals.cambridge.org/abstract_S1946427412007889 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Organic Photovoltaics-Materials to Devices (literal)
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  • 1390 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Kotowski D.; Kozma E;, Catellani M.; Luzzati S. Istituto per lo Studio delle Macromolecole - CNR, Milano, Italy (literal)
Titolo
  • All polymer bulk heterojunction solar cells with high fill factors based on blends of poly3hexylthiophene: poly(perylene diimidealtterthiophene) (literal)
Abstract
  • The photovoltaic characteristics of all polymer bulk heterojunction solar cells made of P3HT and a perylene diimide-based copolymer (PEK3) have been studied. Thermal annealing is needed to improve the performances. Annealing optimization induces an enhancement of the power conversion efficiency from 0.06 to 1%, Jsc from 0.24 to 2.9 mA/cm2 and FF from 0.32 to 0.59. The origin of such improvements has been investigated by studying the P3HT:PEK3 blend morphology, by means of absorption and emission spectroscopy and charge transport, from single carrier measurements on P3HT:PEK3 diodes. Upon annealing we have observed an increase in phase segregation and a 100-fold enhancement of the hole and electron mobilities, that favor the dissociation of bound electron-hole pairs and their transport to the electrodes. This explains the high FF of the annealed P3HT:PEK3 solar cell. (literal)
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