首页|期刊导航|半导体学报（英文版）|Improved field emission properties of carbon nanotube cathodes by nickel electroplating and corrosion
半导体学报（英文版）2012，Vol.33Issue(5)：26-31,6.DOI:10.1088/1674-4926/33/5/053004
Improved field emission properties of carbon nanotube cathodes by nickel electroplating and corrosion
Improved field emission properties of carbon nanotube cathodes by nickel electroplating and corrosion
摘要
Abstract
Carbon nanotube (CNT) cathodes prepared by electrophoretic deposition were treated by a combination of nickel electroplating and cathode corrosion technologies.The characteristics of the samples were measured by scanning electron microscopy,energy dispersive X-ray spectroscopy,J-E and F-N plots.After the treatment,the CNT cathodes showed improved field emission properties such as turn-on field,threshold electric field,current density,stability and luminescence uniformity.Concretely,the turn-on field decreased from 0.95 to 0.45 V/μm at an emission current density of 1 mA/cm2,and the threshold electric field decreased from 0.99 to 0.46 V/μm at a current density of 3 mA/cm2.The maximum current density was up to 7 mA/cm2 at a field of 0.48 V/μm.In addition,the current density of the CNT cathodes fluctuated at around 0.7 mA/cm2 for 20 h,with an initial current density 0.75 mA/cm2.The improvement in field emission properties was found to be due to the exposure of more CNT tips,the wider gaps among the CNTs and the infiltration of nickel particles.关键词
carbon nanotube/ cathode corrosion/ Ni electroplating/ field emissionKey words
carbon nanotube/ cathode corrosion/ Ni electroplating/ field emission引用本文复制引用
Xiao Xiaojing,Ye Yun,Zheng Longwu,Guo Tailiang..Improved field emission properties of carbon nanotube cathodes by nickel electroplating and corrosion[J].半导体学报（英文版）,2012,33(5):26-31,6.基金项目
Project supported by the National High Technology Research and Development Program of China (No.2008AA03A313),the National Natural Science Foundation of China (No.61106053),and the Specialized Research Fund for the Doctoral Program of Higher Education of China (No.20103514110007). （No.2008AA03A313）
