• 文献标题:   The field emission of vacuum filtered graphene films reduced by microwave
  • 文献类型:   Article
  • 作  者:   WANG K, FENG T, QIAN M, DING HI, CHEN YW, SUN ZO
  • 作者关键词:   field emission, vacuum filtered graphene film, microwavesynthesi
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   E China Normal Univ
  • 被引频次:   20
  • DOI:   10.1016/j.apsusc.2011.01.109
  • 出版年:   2011

▎ 摘  要

A green, convenient, and inexpensive approach to producing graphene field emitters has been developed. Graphite oxide (GO) produced by hummer method was reduced to graphene in a microwave synthesis system. The vacuum filtration method made it possible to form pure and uniform graphene thin films without any additives and it's easy to transfer to other substrates. Transmission electron microscopy (TEM), X-ray diffraction (XRD), and UV-vis diffuse reflectance spectroscopy (UV-vis) measurements proved that the graphene prepared by microwave has nearly the same reduction level as that prepared by hydrazine. The results of field emission testing demonstrated that graphene films reduced by microwave are more suitable as field emitters than those reduced by hydrazine, which pave a way to mass-produce low-cost graphene emitter for field emission applications. (C) 2011 Elsevier B.V. All rights reserved.