Low temperature synthesis of diamond-based nano-carbon composite materials with high electron field emission properties

Journal Article · Mon Jun 08 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4922370· OSTI ID:22412548

Saravanan, A.; Huang, B. R. ^[1]; Yeh, C. J.; Leou, K. C. ^[2]

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1. Graduate Institute of Electro-Optical Engineering and Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan (China)
2. Department of Engineering and System Science, National Tsing Hua University, Hsinchu 300, Taiwan (China)

A diamond-based nano-carbon composite (d/NCC) material, which contains needle-like diamond grains encased with the nano-graphite layers, was synthesized at low substrate temperature via a bias enhanced growth process using CH{sub 4}/N{sub 2} plasma. Such a unique granular structure renders the d/NCC material very conductive (σ = 714.8 S/cm), along with superior electron field emission (EFE) properties (E{sub 0} = 4.06 V/μm and J{sub e} = 3.18 mA/cm{sup 2}) and long lifetime (τ = 842 min at 2.41 mA/cm{sup 2}). Moreover, the electrical conductivity and EFE behavior of d/NCC material can be tuned in a wide range that is especially useful for different kind of applications.

• OSTI ID: 22412548
• Journal Information: Applied Physics Letters, Vol. 106, Issue 23; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
77 NANOSCIENCE AND NANOTECHNOLOGY
DIAMONDS
ELECTRIC CONDUCTIVITY
FIELD EMISSION
GRAPHITE
LAYERS
METHANE
NANOSTRUCTURES
SUBSTRATES