Novel field emission from graphene sheets supported by CNTs arrays

Ke Qu, Xiaobing Zhang, Yan Zhang, Chi Li, Matthew T. Cole, Ning Zhao, Chenyan Shi, Shuyi Ding, Kai Ying, Wei Lei, Baoping Wang, William I. Milne

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A good quality graphene is transferred onto honeycomb-like CNTs arrays with inner supporting CNTs. The efficient field emission is demonstrated due to a high aspect ratio protrusions and graphene crack edges. A high efficient current density about 1.2 mA/cm2 at threshold electric field of 7.8 V/μm with a turn-on electric field of 1.8 V/μm at the current density of 10 μA/cm2 is observed due to high localized electric field. Stable field emission is tested in a vacuum chamber. The results are of significance to the development of Graphene based field emitters.

Original languageEnglish
Title of host publication14th IEEE International Vacuum Electronics Conference, IVEC 2013 - Proceedings
DOIs
Publication statusPublished - 2013
Event14th IEEE International Vacuum Electronics Conference, IVEC 2013 - Paris, France
Duration: 21 May 201323 May 2013

Conference

Conference14th IEEE International Vacuum Electronics Conference, IVEC 2013
CountryFrance
CityParis
Period21/05/1323/05/13

Keywords

  • carbon nanotubes
  • field emission
  • graphene

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Qu, K., Zhang, X., Zhang, Y., Li, C., Cole, M. T., Zhao, N., Shi, C., Ding, S., Ying, K., Lei, W., Wang, B., & Milne, W. I. (2013). Novel field emission from graphene sheets supported by CNTs arrays. In 14th IEEE International Vacuum Electronics Conference, IVEC 2013 - Proceedings [6570956] https://doi.org/10.1109/IVEC.2013.6570956