Excellent field emission characteristics from few-layer graphene–carbon nanotube hybrids synthesized using radio frequency hydrogen plasma sputtering deposition

The growth of few-layer graphene (FLG) on carbon nanotubes (CNTs) was realized by using radio frequency hydrogen plasma sputtering deposition. A defect nucleation mechanism and a two dimensional growth model of the FLG were proposed, and field emission characteristics of these FLG–CNT hybrids were s...

Full description

Saved in:
Bibliographic Details
Published inCarbon (New York) Vol. 50; no. 12; pp. 4732 - 4737
Main Authors Deng, Jian-hua, Zheng, Rui-ting, Yang, Yu-mei, Zhao, Yong, Cheng, Guo-an
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.10.2012
Elsevier
Subjects
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Fullerenes and related materials; diamonds, graphite
Materials science
Physics
Specific materials
Plasma
Work functions
Nucleation
Stability
Growth
Hydrogen
Carbon nanotubes
Two dimensional model
Enhancement factor
Mechanism
Sputtering
Defects
Graphene
Frequency
Electric fields
Deposition
Online AccessGet full text

Cover

More Information
Summary:The growth of few-layer graphene (FLG) on carbon nanotubes (CNTs) was realized by using radio frequency hydrogen plasma sputtering deposition. A defect nucleation mechanism and a two dimensional growth model of the FLG were proposed, and field emission characteristics of these FLG–CNT hybrids were studied. They show excellent field emission properties, with a low turn-on electric field (0.98V/μm) and threshold field (1.51V/μm), large field enhancement factor (∼3980) and good stability behavior, which are much better than those of the as-grown CNT arrays. The sharp edges and the low work function of the hybrids are believed to be responsible for the improved field emission properties.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2012.05.065