Large and stable emission current from synthesized carbon nanotube/fiber network

Journal Article · Fri Feb 14 04:00:00 EST 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4864431· OSTI ID:22278071

Di, Yunsong ^[1]; Xiao, Mei; Zhang, Xiaobing; Wang, Qilong; Li, Chen; Lei, Wei; Cui, Yunkang ^[2]

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1. Jiangsu Key Laboratory of Optoelectronic Technology, Nanjing Normal University, Nanjing 210023 (China)
2. School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China)

In order to obtain a large and stable electron field emission current, the carbon nanotubes have been synthesized on carbon fibers by cold wall chemical vapor deposition method. In the hierarchical nanostructures, carbon fibers are entangled together to form a conductive network, it could provide excellent electron transmission and adhesion property between electrode and emitters, dispersed clusters of carbon nanotubes with smaller diameters have been synthesized on the top of carbon fibers as field emitters, this kind of emitter distribution could alleviate electrostatic shielding effect and protect emitters from being wholly destroyed. Field emission properties of this kind of carbon nanotube/fiber network have been tested, up to 30 mA emission current at an applied electric field of 6.4 V/μm was emitted from as-prepared hierarchical nanostructures. Small current degradation at large emission current output by DC power operation indicated that carbon nanotube/fiber network could be a promising candidate for field emission electron source.

• OSTI ID: 22278071
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 6 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ADHESION
CARBON FIBERS
CARBON NANOTUBES
CHEMICAL VAPOR DEPOSITION
ELECTRIC CURRENTS
ELECTRIC FIELDS
ELECTRON SOURCES
ELECTRONS
FIELD EMISSION