Facile synthesis and enhanced field emission properties of Cu nanoparticles decorated graphene-based emitters
DOI: 10.1016/j.diamond.2016.07.011
Title: Facile synthesis and enhanced field emission properties of Cu nanoparticles decorated graphene-based emitters
Journal Title: Diamond and Related Materials
Volume: 69
Publication Date: October 2016
Start Page: 61
End Page: 67
Published online: online 21 July 2016
ISSN: 0925-9635
Author: X.D. Hong, D. Liang, P.Z. Wu, H.R. Zheng
Affiliations:
  • Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Institute of Biomedical and Health Engineering, Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen 518055, PR China
  • Abstract: articles (Cu NPs) were decorated on the surface of graphene films to form composite emitters. The graphene films were deposited by electrophoretic deposition and subsequently coated with Cu NPs via electrochemical reduction. The Cu NPs decorated graphene films exhibited lower turn-on field, lower threshold field and larger field enhancement factor compared with those of the pristine films. The Cu NPs decorated graphene films also showed good emission stability. The field emission properties of Cu NPs decorated graphene films were tunable through adjusting decoration time. This graphene-based composite could be used as a possible candidate for vacuum electron source.
    Accepted: 20 July 2016
    Received: 7 April 2016
    Revised: 15 July 2016
    Keywords: Graphene; Copper; Decoration; Field emission
    Email: dong.liang@siat.ac.cn

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