Surface treatment of carbon nanotube cathodes with glass fillers using KrF excimer laser for field-emission displays

摘要

Carbon nanotube (CNT) cathodes prepared with and without glass fillers were irradiated by a KrF (248 nm) excimer laser light with a homogeneous beam-intensity profile at various laser power densities. The current density was greatly increased by adding glass fillers to the paste. The turn-on field became as low as 0.34 V/ μm and the emission density became as high as 5.88 mA/cm~2 at a field of 2 V/μm by KrF laser irradiation, presumably due to the change in morphology of the surface of the CNT cathodes.