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The effect of the morphology on the field emission characteristics of the well-aligned carbon nanotubes synthesized in methanol

In this study, the field electron emission from the vertically well-aligned CNTs catalytically synthesized in liquid methanol was measured to determine the relation between the emission properties and their morphologies. Heavily doped n-type silicon (Si) wafers with a low resistivity less than 0.02 Ω cm were used as a substrate for the CNT growth. The morphology and fine structure of the grown CNTs were observed by scanning electron microscopy (SEM).