Synthesis and field effect characteristics of Na2Ti3O7 nanowires

Na2Ti3O7 nanowires with diameters of about 80-130 nm and lengths up to several tens of micrometers are synthesized via a simple hydrothermal method and characterized by the field-emission scanning electron microscopy and X-ray diffraction. Back-gate field-effect transistors based on these nanowires are fabricated on indium tin oxide glass substrates with polymethyl-methacrylate-co-glyciclyl-methacrylate as the gate insulator layers. Typical p-type semiconductor material properties are observed in our investigations. The field-effect mobility is about 0.1 cm(2)/Vs. The capacitance per unit area of the dielectric is 3:43 nF/cm(2) (dielectric constant, k = 3.9). The on/off ratio is around 10(3) at the conduction of 10 V. (C) 2009 Elsevier B.V. All rights reserved.