Field emission performances of CNTs bundles array
作者： Jianfeng Dai , Xiaowen Mu , Xiaoting Chen , Junhong Wang , Bi Fu
DOI: 10.1016/J.PHYSE.2011.08.006
关键词:
摘要: Abstract The field emission performances of normal-gate cold cathode, which is composed different multi-wall carbon nanotubes (MWCNTs) bundles array are calculated. device parameters such as the arrangement bundles, density, gate location, voltage, anode voltages and anode–cathode distance affect properties, discussed in detail. results reveal that hexagon needs a lower threshold voltage than square to reach high enhancement factor large current density. density two orders larger oxide emitter. optimal densities get 0.0063 0.00375 μm−2, respectively. Meanwhile, impacted critically by location voltage. Field properties changed little while varies within tens micrometers, increases process-friendliness CNTs devices.
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