Chin. Phys. Lett.  2009, Vol. 26 Issue (8): 086112    DOI: 10.1088/0256-307X/26/8/086112
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
Effect of Electrochemical Treatment in a Lithium Chloride Solution on Field Emission from Carbon Nanotubes
WANG Qiang1, LI Chun1, YUAN Guang1,2, GU Chang-Zhi3
1Department of Physics, Ocean University of China, Qingdao 2661002Research Institute of Electron, University of Shizuoka, Hamamatu 432-8011, Japan3Institute of Physics, Chinese Academy of Sciences, Beijing 100190
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WANG Qiang, LI Chun, YUAN Guang et al  2009 Chin. Phys. Lett. 26 086112
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Abstract Carbon nanotubes (CNTs) are electrochemically treated in a lithium chloride solution at a concentration 0.1mol/L. The field emission properties of the CNTs are investigated at different temperatures before and after the electrochemical treatment. After treatment, the turn-on voltage to produce field emission current of 10μA decreases from 4.2kV to 2.7kV and the field emission current increases distinctly, but the stability falls off. Based on the Fowler-Nordheim plot, the values of the work function for the CNTs are calculated, which reveals that work function decreases after the electrochemical treatment. These results are attributed to the decrease of the work function of the carbon nanotubes.
Keywords: 61.16.Fk      61.72.Ww     
Received: 11 March 2009      Published: 30 July 2009
PACS:  61.16.Fk  
  61.72.Ww  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/8/086112       OR      https://cpl.iphy.ac.cn/Y2009/V26/I8/086112
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WANG Qiang
LI Chun
YUAN Guang
GU Chang-Zhi
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