Abstract
Abstract In this work, amorphous diamond (a-D) films have been prepared by filtered arc deposition (FAD). Field emission data from the a-D film were obtained using planar diode structure. Emission currents in the range of 20–40 μ A were detected at an electric field of 20 V μ m −1 . A mechanism for electron emission from the a-D film is discussed. FAD a-D films had a low effective work function (1.0 eV) and negative electron affinity (−0.2 eV). In addition, uniform and stable emission can be achieved for FAD a-D films.
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