Growth and field emission properties of vertically aligned molybdenum–sulfur–iodine nanowires on molybdenum and quartz substrates

Abstract

Vertically aligned bundles of molybdenum-sulfur-iodine nanowires ͑MoSIx͒ were grown on a molybdenum foil, thin wire, and quartz substrate. By choosing different growth parameters we have been able to vary the surface density from ϳ0.01 to 0.5 bundless/ m 2 and the length of the nanowire bundles from ϳ30 m to 15 mm. In the case of growth on molybdenum, resistivity measurements show that a good electrical contact exists between the bundles and the metal substrate. The nanowires are found to have excellent field emission properties, competitive with state-of-the-art carbon nanotube large-area field emitters.

Inorganic molecular wires: Physical and functional properties of transition metal chalco-halide polymers

“…Dvorsek et al [13] have also established that Mo 6 S 6 I 2 and MoI 2 microcrystals appear as precursors on the surface of Mo from which the nanowires grow. Mo 6 S 6 I 2 is metallic, which may explain the presence of the good electrical contact between the molybdenum substrate and the nanowires.…”

“…MoSI nanowires, which grow in a single-step synthesis procedure on a molybdenum substrate without any catalysts, potentially represent an important advance on current technologies. The feasibility of controlling length and diameter in the growth was recently demonstrated [13] with good results. Vertically aligned bundles of MoSI nanowires were grown on a molybdenum foil, thin wire, and quartz substrate [13].…”

“…The feasibility of controlling length and diameter in the growth was recently demonstrated [13] with good results. Vertically aligned bundles of MoSI nanowires were grown on a molybdenum foil, thin wire, and quartz substrate [13]. By choosing different growth parameters, more precisely, by adjusting the S and I content in the reactor vessel, the authors have been able to vary the surface density from 0.01 to 0.5 bundles/lm 2 and the length of the nanowire bundles from 30 lm to 15 mm.…”

“…38) which may be of interest for lighting and display applications were grown on Mo metal as described in Section 2 [13]. The observed maximum FE current density of 2 mA/cm 2 (Fig.…”

“…Single emitters as well as large-area emitters were both characterized [13,69,70]. A single nanowire was mounted on an indium-coated nickel holder by dielectrophoresis in isopropyl alcohol (see Fig.…”