4.6 Article

Effective doping by spin-coating and enhanced thermoelectric power factors in SWCNT/P3HT hybrid films

Journal

JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 23, Pages 12314-12319

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta02443a

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Funding

  1. R&D Convergence Program of NST (National Research Council of Science Technology)
  2. KRICT Core Project [KK-1507-C6]
  3. Center for Advanced Soft-Electronics - Ministry of Science, ICT and Future Planning as Global Frontier Project [2011-0031628]

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This study investigates a coating method for doping a single-walled carbon nanotube (SWCNT)/poly(3-hexylthiophene) (P3HT) hybrid film. In the hybrid film, P3HT chains were very highly doped by simple spin-coating of a FeCl3/nitromethane solution. Hybrid films doped by spin-coating exhibited power factors of 267 +/- 38 mu W m(-1) K-2, which is an improvement over that of hybrid films doped by conventional immersion, 103 + 24 mu W m(-1) K-2. The excellent thermoelectric performance is originated from the dramatically increased electrical conductivity by the sufficient doping of P3HT in the hybrid films.

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