Abstract
The carbon nanoparticles film coating on top of vertically aligned carbon nanotubes on silicon substrate (CNPs/CNTs/silicon) has been prepared by the pyrolysis of FePC at 960 °C. The surface morphologies and structure of the prepared sample are characterized by Scanning Electron Microscope, X-ray energy dispersive spectroscopy and Raman Spectroscopy. The field electron emission (FEE) properties of the CNPs/CNTs are also measured. A low turn-on electric field of 1.3 V/μm at a current density of 10 μA/cm2, low threshold electric field of 1.8 V/μm at a current density of 1 mA/cm2, a high emission density and good field emission stability are obtained. The above results make CNPs/CNTs/silicon an effective field emitter.
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