Effects of Potassium Doping on Field Emission Properties of Multi-walled Carbon Nanotubes Films
In this paper we report our experimental studies on the effects of potassium (K) doping on field emission properties of multi-walled carbon nanotubes films. Doping treatment was carried out with K in gas phase by vapor-solid reactions in a glass bulb. Field emission I-V curves were measured in situ. Compared with pristine films, the turn-on voltage for field emission from the processed sample decreased from 0.89 kV to 0.64 kV and field emission current increased by an order of magnitude. Resistance measurement and XPS analysis showed that n-doping mechanism played an important role in the field emission enhancement.
Multi-Walled Carbon Nanotubes Films Potassium Doping Field Emission Work Function
Jianping Sun
Institute of Modern Electronic Technology, School of Electric & Electronic Engineering, North China Electric Power University,Beijing 102206, China
国际会议
上海
英文
382-385
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）