Fabrication of a sexithiophene semiconducting wire: Nanoshaving with an atomic force microscope tip

Functional semiconducting wires were fabricated from the molecular semiconductor sexithiophene using atomic force microscope (AFM) nanoshaving. Wires carved to 300 and 70 nm widths were obtained. Through photoconductivity and temperature-dependent transport measurements, the electrical properties of the wires were found to be consistent for single grains of organic semiconductor sexithiophene. The time-dependent transport in wires showed that the sexithiophene undergoes reversible trapping of positive-charge carriers.