Field emission properties of vertically aligned iron nanocluster wires grown on a glass substrate Available to Purchase

Vertically aligned nanocluster wires (NCWs) were synthesized on indium-tin-oxide-coated glass substrates via the thermal decomposition of $Fe(CO)5$ with a resistive heater under a magnetic field. The density of the aligned $NCWs$ was controlled by varying the flow rate of the carrier gas. The low-density $NCWs$ showed better field emission characteristics, with a low turn-on field of about $4V∕μm$ and a current density as high as $3mA∕cm2$ at $7.6V∕μm$⁠. The field enhancement factor $(γ)$ was determined to be $∼1200$ for high-density $NCWs$ and $∼1600$ for low-density $NCWs$⁠, which is comparable to those of carbon nanotubes.