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Using copper substrate to enhance electron field emission properties of carbon nanotube/diamond double-layered structure

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Abstract

Vertically aligned carbon nanotube (CNT)/diamond double-layered structure was synthesized on copper (Cu) substrate by hot-filament chemical vapor deposition. The structure was characterized by scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The results show that the diamond layer has good adhesion to the Cu substrate and the CNTs have direct contact with the diamond layer. Field electron emission measurement shows that the double-layered structure on copper has very good emission stability and a much lower turn-on field than that on silicon (Si).

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Acknowledgments

This work is supported by the Canada Research chair program, the National Sciences and Engineering Research Council of Canada (NSERC), and the China Scholarship Council (CSC). The author would like to thank Saskatchewan Science and Structure Center for the Raman spectra measurement.

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Authors and Affiliations

  1. Department of Mechanical Engineering University of Saskatchewan, Saskatoon, SK, S7N 5A9, Canada

    Lezhi Yang, Yuan-shi Li, Hamid Niakan, Chunzi Zhang & Qiaoqin Yang

  2. Department of Mechanical Engineering National Institute of Technology, Tiruchirappalli, Tiruchirappalli, Tamilnadu, 620015, India

    C. S. Sujith Kumar & Suresh Aravind

  3. Plasma Physics Laboratory, University of Saskatchewan, 116 Science Place, Saskatoon, SK, S7N 5E2, Canada

    Akira Hirose

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  1. Lezhi Yang
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  2. C. S. Sujith Kumar
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  5. Chunzi Zhang
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Yang, L., Sujith Kumar, C.S., Li, Ys. et al. Using copper substrate to enhance electron field emission properties of carbon nanotube/diamond double-layered structure. Appl. Phys. A 118, 183–189 (2015). https://doi.org/10.1007/s00339-014-8885-2

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  • DOI: https://doi.org/10.1007/s00339-014-8885-2

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