Advances in fabrication procedures have allowed regular arrays of carbon nanotubes (CNTs) with controllable parameters to be obtained [1]. CNT arrays may be integrated with extraction and other electrodes, for field emission displays (FEDs) and other application [2]. In this study, the CNT electron emission current has been computed using a previously derived analytical formula [3], which depends on the local electric field. An analytical relationship for the field enhancement has been derived, based on multiple field data sets obtained using numerical computation applied for a nanotriode configuration. The electric field within the CNT array depends on applied voltages and geometrical parameters, such as the CNT radius, the distance to the extraction electrode (being generally not uniform), and the CNT packing density.
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