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Synfacts 2011(1): 0036-0036  
DOI: 10.1055/s-0030-1259147
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart ˙ New York

Tailor-Made Donor-Acceptor Polymer for OFETs

Contributor(s): Timothy M. Swager, Shuang Liu
T. L. Nelson, T. M. Young, J. Liu, S. P. Mishra, J. A. Belot, C. L. Balliet, A. E. Javier, T. Kowalewski, R. D. McCullough*
Carnegie Mellon University, Pittsburgh, USA
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Publikationsdatum:
21. Dezember 2010 (online)

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Significance

A semiconducting polymer is synthesized based on Stille copolymerization using dithienopyrrole (DTP) and diketopyrrolopyrrole (DPP) as strong donor and acceptor units, respectively. This polymer (poly-DTP-DPP) shows narrow band gap of 1.15 eV and hole mobility as high as 0.41 cm²/Vs in annealed thin films. Polymer ­organic field-effect transistors (OFETs) fabricated with different channel lengths exhibit reproducible p-channel mobility of 0.28 cm²/Vs ± 0.019 and on/off ratio of 10³-104.