Issue 56, 2018, Issue in Progress
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RSC Advances

The adsorption state and the evolution of field emission properties of graphene edges at different temperatures

Lijuan Jiang, ORCID logo ab   Peng Liu,*b   Lina Zhang,b   Changhong Liu,b   Liwei Zhanga  and  Shoushan Fanb  

* Corresponding authors

a Department of Physics and Electronic Engineering, Xinxiang University, Xinxiang 453003, China

b State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
E-mail: pengliu@mail.tsinghua.edu.cn

Abstract

We have studied the effects of adsorbates on the field emission (FE) properties of graphene edges at different temperatures using Joule heating. Using infrared imaging and spectral fitting, the temperature from room temperature to about 1000 K was measured accurately. It was found that adsorption induces the deviation of graphene edge field emission from the Fowler–Nordheim law and the noise of the field emission. The adsorbates are gradually desorbed with an increase in temperature, and are almost completely desorbed above about 500 K. The FE of graphene edges without adsorption is fairly consistent with the FN theory.

Graphical abstract: The adsorption state and the evolution of field emission properties of graphene edges at different temperatures

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Article information

DOI
https://doi.org/10.1039/C8RA04705G
Article type
Paper
Submitted
01 Jun 2018
Accepted
08 Aug 2018
First published
12 Sep 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 31830-31834

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The adsorption state and the evolution of field emission properties of graphene edges at different temperatures

L. Jiang, P. Liu, L. Zhang, C. Liu, L. Zhang and S. Fan, RSC Adv., 2018, 8, 31830 DOI: 10.1039/C8RA04705G

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