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Keywords:

  • Field-effect transistors;
  • Organized assemblies;
  • Semiconductors, organic
Thumbnail image of graphical abstract

Field-effect transistors with highly ordered active layers are fabricated by zone-casting discotic dodecyl-substituted hexa-peri-hexabenzocoronene molecules onto hydrophobic substrates to form semiconducting columnar structures (see Figure). The discs form columns that possess long-range order on the scale of square centimeters, and the devices show order-of-magnitude improvements in charge-carrier mobilities over previously reported devices.