The influence of film morphology in high-mobility small-molecule: Polymer blend organic transistors

Jeremy Smith, Richard Hamilton, Yabing Qi, Antoine Kahn, Donal D.C. Bradley, Martin Heeney, Iain McCulloch, Thomas D. Anthopoulos

Research output: Contribution to journalArticlepeer-review

113 Scopus citations


Organic field-effect transistors (OFETs) based upon blends of small molecular semiconductors and polymers show promise for high performance organic electronics applications. Here the charge transport characteristics of high mobility p-channel orpnic transistors based on 2,8-difluoro-5,11- bis(triethylsilylethynyl) anthradithiophene:poly(triarylamine) blend films are investigated. By simple alteration of the film processing conditions two distinct film microstructures can be obtained: one characterized by small spherulitic grains (SG) and one by large grains (LC). Charge transport measurements reveal thermally activated hole transport in both SC and LG film microstructures with two distinct temperature regimes. For temperatures >115 K, gate voltage dependent activation energies (EA) in the range of 25-60 meV are derived. At temperatures
Original languageEnglish (US)
Pages (from-to)2330-2337
Number of pages8
JournalAdvanced Functional Materials
Issue number14
StatePublished - Jul 23 2010
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-02-14

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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