High emission performance from point emitters made by carbon nanotube films
Vacuum Nanoelectronics Conference（2011）
摘要
We present field emission properties of CNT point emitters fabricated by a unique method. The CNT point emitters exhibited high emission current up to 2.3 mA at the electric field of 1.6 V/μm and excellent emission stability during 24 h. Moreover, emission pattern showed a very low spreading angle of emitted electrons at the anode electrode. The high emission performance was attributed to the well-focused local electric field and high density of emission sites.
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关键词
carbon nanotubes,electric fields,carbon nanotube films,current 2.3 ma,electric field,high emission performance,point emitters,time 24 h,carbon nanotube,field emitter,point,temperature measurement,films,fabrication,thermal stability
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