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α-Fe2O3 nanomaterials with different morphology parameters were prepared by varying growth temperature in the thermal oxidation process. After current aging treatment, emission current density increased from 0.05 mA/cm2 to 5.70 mA/cm2 under applied electrical field of 7.8 MV/m.α-Fe2O3 nanoflakes prepared under 350 °C exhibits low threshold field of 5.1 MV/m. Current aging treatment was carried out...
Lanthanum hexaboride (LaB6) nanowires have attracted much attention due to their outstanding physical properties. In order to enhance the developments of LaB6 nanowires, it is essential to study the field emission (FE) properties of LaB6 nanowires in different environments. Here, we investigate the effect of oxygen (O2) on the FE behaviors of LaB6 nanowires. And it is found that the oxygen content...
A theoretical model for one-dimensional CuO nanowire was established considering transport mechanisms induced by different defect concentration. By using a one-dimensional heat equation, the emission current was calculated by considering the temperature induced by the emission current. The maximum emission current density and maximum applied field was studied considering different electrical properties...
Vertical few-layer graphene (FLG) is an excellent field emission material, with an atomically thin edge and a 2-D heat dissipation area. A pulse voltage driving operation was used to achieve a high field emission current. The pulsewidth and duty ratio affected the field emission characteristics of the FLG due to the current heating effect. The optimal pulse parameters were obtained. A maximum current...
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