Prolonging charge separation in P3HT-SWNT composites using highly enriched semiconducting nanotubes.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 20939586.
- Also identified by DOI 10.1021/nl102753z.
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Abstract
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.
Medical subject headings
- Nanotubes, Carbon
- Organoselenium Compounds
- Semiconductors