Increase in emission current after high-frequency low-voltage pulse application observed for nano-pillar cathode

We demonstrated the drastically increase in emission current by applying high-frequency low-voltage pulses in gated organic nano-pillar cold cathodes. This method is effective to increase the number of emission site without destruction of emitter tip, because the transient current is considered to induce the heat at even at inactive emitter tip. This result suggests that high-frequency low-voltage pulse application increases the number of emission site due to rise in temperature caused by transient current flowing during the application of the pulses. This method is expected to be an effective post-fabrication treatment method of field emitters after vacuum sealing.