Enhancement mechanism of field electron emission properties in hybrid carbon nanotubes with tree- and wing-like features |
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Authors: | G.M. Yang C.C. Yang Q. Xu S. Li |
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Affiliation: | a Department of Materials Science, State Key Laboratory of Superhard Materials, and Key Laboratory of Automobile Materials of MOE, Jilin University, Changchun 130012, PR China b School of Materials Science and Engineering, The University of New South Wales, NSW 2052, Australia c Changchun Institute of Technology, Changchun 130021, PR China |
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Abstract: | In this work, the tree-like carbon nanotubes (CNTs) with branches of different diameters and the wing-like CNTs with graphitic-sheets of different densities were synthesized by using plasma enhanced chemical vapor deposition. The nanostructures of the as-prepared hybrid carbon materials were characterized by scanning electron microscopy and transmission electron microscopy. The structural dependence of field electron emission (FEE) property was also investigated. It is found that both of the tree- and wing-like CNTs exhibit a lower turn-on field and higher emission current density than the pristine CNTs, which can be ascribed to the effects of branch size, crystal orientation, and graphitic-sheet density. |
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Keywords: | Branch Density Graphitic sheets RF-PECVD |
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