Dependence of field emission properties of carbon nanotube films on their graphitization
CNT diode devices.
Field emission current measurement system.
SEM micrographs of (a) the CNT emitter array and (b) a single CNT diode device: (, 15% methane).
Current-voltage characteristic of the CNT diode device (microwave , ).
Raman spectrum of the CNT emitter array (microwave , ).
TEM images of a carbon nanotube (a) at the middle portion and (b) at the tip portion.
Dependence of the CNT graphitization on the flow ratio and the MW power.
Dependence of the threshold field on the flow ratio and the MW power.
Dependence of the field-controlled current density on the flow ratio and the MW power.
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