Schematic diagram of the experimental procedure used in this work.
Effects of bonding materials on the field-emission properties of screen-printed CNT cathodes measured in the diode mode in a high-vacuum chamber (distance between electrodes is ): (a) voltage vs emission current curves and (b) Fowler–Nordheim plots.
Plan view of SEM micrographs for samples after surface treatment: (a) sample F10A0 and (b) sample F0A10.
Side views of a CNT cathode for sample F0A10: (a) SEM micrograph and (b) schematic description of (a), where 1 is the cathode, 2 is the CNT, and 3 is the bonding material.
Schematic illustration of the electric potential contours around CNTs in CNT cathodes dependence on the bonding materials: (a) ideal CNT cathode, (b) sample F0A10, and (c) sample F10A0.
Change in sheet resistance of films after screen-printing and firing at on the composition of the bonding material.
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