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Keywords:

  • Polymer semiconductors;
  • organic thin film transistors;
  • donor-acceptor;
  • 1,4-diketopyrrolo[3,4-c]pyrrole;
  • thieno[3,2-b]thiophene
Thumbnail image of graphical abstract

A copolymer comprising 1,4-diketopyrrolo[3,4-c]pyrrole (DPP) and thieno[3,2-b]thiophene moieties, PDBT-co-TT, shows high hole mobility of up to 0.94 cm2 V−1 s−1 in organic thin-film transistors. The strong intermolecular interactions originated from π-π stacking and donor-acceptor interaction lead to the formation of interconnected polymer networks having an ordered lamellar structure, which have established highly efficient pathways for charge carrier transport.