Observation of a type II heterojunction in a highly ordered polymer-carbon nanotube nanohybrid structure.
basic_science · Level V
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- Record sourced from PubMed, PMID 19795839.
- Also identified by DOI 10.1021/nl902081t.
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Abstract
We report a study of the electronic properties of the heterojunction between regioregular poly(3-hexylthiophene) (rrP3HT) and single-walled carbon nanotubes (SWNTs). Comparison of the spectroscopic data of nanotube dispersions in a range of polymers indicates significant changes in the nature of the observed SWNT excitons only in combination with rrP3HT. A detailed analysis concludes that a type II heterojunction between rrP3HT and small diameter s-SWNTs is formed, making these particular nanohybrids a promising material for organic photovoltaics.