NDLI: Field emission from polypyrrole-graphene composites synthesized by electrochemical deposition method

Content Provider	IEEE Xplore Digital Library
Author	Ning Zhao Jing Chen Zhiwei Zhao Wei Lei Xiaobing Zhang
Copyright Year	2015
Description	Author affiliation: Display Res. Center, Southeast Univ., Nanjing, China (Ning Zhao; Jing Chen; Zhiwei Zhao; Wei Lei; Xiaobing Zhang)
Abstract	Field emission of graphene is usually limited by the surface morphology because the existing deposition methods lead to graphene flakes that lay flat on the substrate. To overcome this problem, we synthesized polypyrrole(PPy)-graphene composites by electrochemical deposition method. The graphene flakes are oriented at some angles on the PPy surface, leading to good field emission performance. This can be attributed to the enhanced local electric field at the tips and edges of the randomly vertical graphene flakes as well as the electrical conductivity enhancement due to the existence of PPy particles. Compared with the flat graphene sheets, the PPy-graphene composites show a better field emission performance, with a lower turn-on voltage and a larger current density. The results are of significance to the graphene based field emission device.
Starting Page	1
Ending Page	2
File Size	781330
Page Count	2
File Format	PDF
ISBN	9781467393560
e-ISBN	9781467393577
DOI	10.1109/IVNC.2015.7225600
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-13
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Graphene Substrates Surface treatment Surface morphology Conductivity Electrodes Temperature measurement field emission graphene polypyrrole electrochemical deposition
Content Type	Text
Resource Type	Article

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