Abstract
AbstractWe have investigated effects of post‐treatment of carbon nanotubes(CNTs) films on field emission characteristics. CNTs films were prepared with Ar plasma treatment of different exposure times. With the Ar plasma treatment, electron emission at low threshold field was observed and higher emission current at 2.9 V/μm was generated, compared to the untreated films. Also the field emission site density of CNTs films was improved by Ar plasma treatment. We show that electrons can be emitted from not only CNT tip but also irradiation‐induced defects on CNTs walls.
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