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
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
摘要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.
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.
WANG Qiang;LI Chun;YUAN Guang;GU Chang-Zhi. Effect of Electrochemical Treatment in a Lithium Chloride Solution on Field Emission from Carbon Nanotubes[J]. 中国物理快报, 2009, 26(8): 86112-086112.
WANG Qiang, LI Chun, YUAN Guang, GU Chang-Zhi. Effect of Electrochemical Treatment in a Lithium Chloride Solution on Field Emission from Carbon Nanotubes. Chin. Phys. Lett., 2009, 26(8): 86112-086112.
[1] de Heer W A, Chatelain A and Ugarte D 1995 Science 270 1179 [2] Rinzler A G, Hafner J H and Nikolaev P 1995 Science 269 1550 [3] Choi W B, Chung D S and Kang J H 1999 Appl. Phys.Lett. 75 3129 [4] Smith R C, Carey J D and Poa C H P 2004 J. Appl.Phys. 95 3153 [5] Zhao G, Zhan Q G, Zhang H and Yang G 2006 Appl. Phys.Lett. 89 263113 [6] Kim W S, Lee J and Jeong T W 2005 Appl. Phys. Lett. 87 163112 [7] Tens S J, Verchuren R M and Dekker C 1998 Nature 393 49 [8] Ago H, Kugler T and Cacialli F 1999 J. Phys. Chem. B 103 8116 [9] Fransen M J, Rooy T L and von Kruit P 1999 Appl.Surf. Sci. 146 312 [10] Bonard J M, Kenneth A D and Bernard F 2002 Phys.Rev. Lett. 89 197602 [11] Hamada N, Sawada S I and Oshiyama A 1992 Phys. Rev.Lett. 68 1579 [12] Kane C L and Mele E J 1997 Phys. Rev. Lett. 78 1932 [13] Liang S D and Xu N S 2003 Appl. Phys. Lett. 83 1213 [14] Chen K F and Jiang Y C 2006 Appl. Phys. Lett. 88 193127 [15] Hwang J D, Chen K F and Chan L H 2006 Appl. Phys.Lett. 89 033103 [16] Chen Z, Engelsen D D and Bachmann P K 2005 Appl.Phys. Lett. 87 243104 [17] Ha B and Lee C J 2007 Appl. Phys Lett. 90023108 [18] Claye A, Nemes N M, J\'{anossy A and Fischer J E 2000 Phys. Rev. B 62 R4845 [19] Bendiab N, Spina L and Zahab A 2001 Phys. Rev. B 63 153407 [20] Claye A, Rahman S and Fischer J E 2001 Chem. Phys.Lett. 333 16 [21] Sauvajol J, Bendiab N, Anglaret E and Petit P 2003 C. R. Physique 4 1035 [22] Lyth S M, Hatton R A and Silva S R P 2007 Appl.Phys. Lett. 90 013120 [23] Guo D B, Yuan G, Gu C Z 2007 Acta Phys. Sin. 56 10 (in Chinese) [24] Xu Z, Bai X D, Wang E G and Wang Z L 2005 Appl.Phys. Lett. 87 163106 [25] Su W S, Leung T C, Li B and Chan C T 2007 Appl.Phys. Lett. 90 163103
2009, Vol. 26 
