Synthesis and field emission characteristics of W5O14 nanowires film

The W5O14 nanowires are metallic oxides with specific resistivity of 27 mu Omega cm and diameters bellow 100 nm. The field emission characteristics of the films composed of these nanowires have been investigated. The emitting current densities up to 6.4 mA/cm(2) have been obtained at very low electric field of about 3 V/mu m. The samples were allowed to emit for more than 100 h without showing significant decays of the emitting current and without substantial current oscillations. These characteristics make these nanowires very promising for the realization of large area field emitting cathodes. (C) 2017 Elsevier B.V. All rights reserved.