4.8 Article

Charge-Transport Anisotropy Due to Grain Boundaries in Directionally Crystallized Thin Films of Regioregular Poly(3-hexylthiophene)

Journal

ADVANCED MATERIALS
Volume 21, Issue 16, Pages 1568-+

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200802722

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Funding

  1. U.S. Department of Energy
  2. Office of Basic Energy Sciences
  3. National Science Foundation

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P3HT films that are highly anisotropic inplane are produced using a directional crystallization technique, and the charge-transport properties of grain boundaries between different orientations of crystallites are studied. Boundaries along the fiber provide a small barrier to charge transport when compared to fiber-to-fiber grain boundaries. The films allow a correlation to be drawn between the grain-boundary type and charge-tran sport behavior in P3HT

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