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Keywords:

  • Copper-phthalocyanine nanowires;
  • Field-effect transistors;
  • Organic electronics;
  • Charge transport;
  • Nanostructures

Abstract

This paper describes a simple, vapor-phase route for the synthesis of metastable α-phase copper-phthalocyanine (CuPc) single-crystal nanowires through control of the growth temperature. The influence of the growth temperature on the crystal structures, morphology, and size of the CuPc nanostructures is explored using X-ray diffraction (XRD), optical absorption, and transmission electron microscopy (TEM). α-CuPc nanowires are successfully incorporated as active semiconductors in field-effect transistors (FETs). Single nanowire devices exhibit carrier mobilities and current on/off ratios as high as 0.4 cm2 V−1 s−1 and >104, respectively.