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Graphene field emitters: A review of fabrication, characterization and properties

机译：石墨烯场发射体：制备，表征和性能的综述

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摘要

Graphenes are beneficial to electrons field emission due to its high aspect ratio, high carrier density, the larger carrier mobility, excellent electrical and thermal conductivity, excellent mechanical strength and chemical stability. In recent years, graphene or reduced oxide graphene field emitters have been successfully constructed by various methods such as chemical vapor deposition, chemical exfoliation, elec-trophoretic deposition, screen-printing and chemical synthesis methods. Graphene emitters are tried to construct in distribution with some angles or vertical orientation with respect to the substrate surface. The vertical alignment of graphene sheets or edges arrays can facilitate efficient electron emission from the atomically thick sheets. Therefore they have even more a low turn-on and threshold-field electronic field, high field enhancement factor, high current stability and high luminance. In this review, we shortly survey and discuss recent research progress in graphene field emission properties with particular an emphasis on their preparing method, characterization and applications in devices especially for vertical graphene and single layer graphene, also including their challenges and future prospects.
机译：石墨烯具有高的长宽比，高的载流子密度，更大的载流子迁移率，优异的电导率和导热率，优异的机械强度和化学稳定性，因此对电子场发射是有益的。近年来，通过各种方法，例如化学气相沉积，化学剥落，电泳沉积，丝网印刷和化学合成方法，已经成功地构造了石墨烯或还原氧化物石墨烯场发射体。尝试将石墨烯发射体构造成相对于衬底表面以一定角度或垂直方向分布。石墨烯片或边缘阵列的垂直排列可以促进从原子厚的片的有效电子发射。因此，它们具有更低的导通电场和阈值电场，更高的场增强因子，更高的电流稳定性和更高的亮度。在这篇综述中，我们简短地调查和讨论了石墨烯场发射特性的最新研究进展，重点是它们的制备方法，表征和在器件中的应用，特别是在垂直石墨烯和单层石墨烯的器件中的应用，还包括它们的挑战和未来前景。

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  • 来源
    《Materials Science and Engineering》 |2017年第6期|44-58|共15页
  • 作者

    Leifeng Chen; Hu Yu; Jiasong Zhong; Lihui Song; Jun Wu; Weitao Su;

  • 作者单位

    College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China,State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, PR China;

    College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China;

    College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China;

    College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China;

    Institute of Electron Device & Application, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China;

    College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Graphene; Reduced; graphene oxide; Electron field emission;

    机译：石墨烯;还原;氧化石墨烯;电子场发射;

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