Prolonging charge separation in P3HT-SWNT composites using highly enriched semiconducting nanotubes. Journal Article uri icon



  • Single-walled carbon nanotubes (SWNTs) have potential as electron acceptors in organic photovoltaics (OPVs), but the currently low-power conversion efficiencies of devices remain largely unexplained. We demonstrate effective redispersion of isolated, highly enriched semiconducting and metallic SWNTs into poly(3-hexylthiophene) (P3HT). We use these enriched blends to provide the first experimental evidence of the negative impact of metallic nanotubes. Time-resolved microwave conductivity reveals that the long-lived carrier population can be significantly increased by incorporating highly enriched semiconducting SWNTs into semiconducting polymer composites.

publication date

  • November 1, 2010

Full Author List

  • Holt JM; Ferguson AJ; Kopidakis N; Larsen BA; Bult J; Rumbles G; Blackburn JL

Other Profiles

Additional Document Info

start page

  • 4627

end page

  • 4633


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