High performance field emission properties of graphite nanoplatelet field emitters

Yenan Song, Dong Hoon Shin, Yoon Ho Song, Yahachi Saito, Cheol Jin Lee

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    13 Citations (Scopus)

    Abstract

    Graphite nanoplatelet (GNP) that consists of several tens of layers of graphene sheets is a promising candidate for electron field emission. The GNP emitter shows good field emission properties with a high emission current and a robust long-term stability because of the sharp edges, the high aspect ratio, and the stacked graphene sheets. Most of the electrons are emitted from the sharp edges of GNPs. The GNP emitters fabricated by the screen printing method reveal the turn-on electric field of 1.77 V/μm, the threshold electric field of 4.47 V/μm, the maximum emission current density of 39 mA/cm2, and the good emission stability for 20 h with little degradation rate of the emission current. The GNP field emitters can be a good candidate for several field emission applications such as flat lamps, field emission displays, and x-ray sources.

    Original languageEnglish
    Article number073112
    JournalApplied Physics Letters
    Volume103
    Issue number7
    DOIs
    Publication statusPublished - 2013 Aug 12

    Bibliographical note

    Funding Information:
    This work was supported by World Class University (WCU, R32-2008-000-10082-0) Project through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology. This work was also supported by the Korea Basic Science Institute and ETRI Creative R&D program (12ZF1100).

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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