4.8 Article

Observation of a Type II Heterojunction in a Highly Ordered Polymer-Carbon Nanotube Nanohybrid Structure

Journal

NANO LETTERS
Volume 9, Issue 11, Pages 3871-3876

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/nl902081t

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Funding

  1. Engineering and Physical Sciences Research Council
  2. Bayer Science and Education Foundation
  3. Deutscher Akadentischer Austauschdienst
  4. Engineering and Physical Sciences Research Council [GR/S83029/01] Funding Source: researchfish

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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.

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