The field emission characteristics of multiwalled carbon nanotubes grown on metal tips are studied at various temperatures. It is found that emission current at a given applied electric field increased with the temperature, and the stability of the current did not change. The dependence upon temperature varies quite differently with the metal substrates. This may result from the asymmetry of the CNTs and the interface effect between CNT and underlay.
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Rinzler A G, Hafner J H, Nikolaev P, et al. Unraveling nanotubes:field emission from an atomic wire. Science, 1995, 269: 1550–1553
De Heer W A, Chatelain A, Ugarte D. Carbon nanotube field-emission electron source. Science, 1995, 270: 1179–1180
Collins P G, Zettl A. Unique characteristics of cold cathode carbon-nanotube matrix field emitters. Phys Rev B, 1997, 55: 9391–9399
Dean K A, Chalamala B R. Current saturation mechanisms in carbon nanotube field emitters. Appl Phys Lett, 2000, 76: 375–377
Chen Y, Deng S Z, Xu N S, et al. Physical origin of non-linearity in Fowler-Nordheim plots of aligned large area multi-walled nitrogen-containing carbon nanotubes. Mater Sci Eng A, 2002, 327:16–19
Altman I S, Pikhitsa P V, Choi M. Electron field emission from nanocarbons: A two-process model. Appl Phys Lett, 2004, 84: 1126–1128
Tan C M, Jia J J, Yu W B. Temperature dependence of the field emission of multiwalled carbon nanotubes. Appl Phys Lett, 2005, 86: 263104-1–263104-3
Yuan G, Song H, Jin Y X, et al. Effect of distribution of field enhancement factor on field emission from cathode with a large number of emission sites. Thin Solid Films, 2005, 484: 379–381
Gao R P, Pan Z W, Wang Z L, Work function at the tips of multiwalled carbon nanotubes. Appl Phys Lett, 2001, 78: 1757–1759
Jonge N D, Allioux M, Doytcheva M, et al. Characterization of the field emission properties of individual thin carbon nanotubes. Appl Phys Lett, 2004, 85: 1607–1609
Xue Q Z, Wu Q D. Electronic Emssion and Energy Spectra. Beijing: Peking University Press, 1993
Xu N S, Huq S E. Novel cold cathode materials and applications. Mater Sci Eng R, 2005, 48: 47–189
Huang N Y, She J C, Deng S Z, et al. Mechanism responsible for initiation carbon nanotube vacuum breakdown. Phys Rev Lett, 2004, 93(07): 075501-1–4
Zheng X, Chen G H, Li Z B, et al. Quantum-Mechanical investigation of field-emission mechanism of a micrometer-long single-walled carbon nanotube. Phys Rev Lett, 2004, 92(10): 106803-1–106803-4
Supported by the 973 Program of the Ministry of Science and Technology of China (Grant No. 2003CB314702)
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Guo, D., Yuan, G., Song, C. et al. Field emission study of CNTs on metal tips. Chin. Sci. Bull. 53, 17–21 (2008). https://doi.org/10.1007/s11434-008-0010-5
- field emission
- carbon nanotube
- temperature characteristic