Effective large-area free-standing graphene field emitters by electrophoretic deposition

被引：25

作者：

Koh, Angel T. T. ^{[1
]}

Foong, Y. M. ^{[1
]}

Pan, Likun ^{[2
]}

Sun, Zhuo ^{[2
]}

Chua, Daniel H. C. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117574, Singapore

[2] E China Normal Univ, Engn Res Ctr Nanophoton & Adv Instrument, Minist Educ, Dept Phys, Shanghai 200062, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 18期

关键词：

FEW-LAYER GRAPHENE; CARBON NANOTUBES; FILMS; OXIDE; TRANSPARENT; EMISSION; REDUCTION;

D O I：

10.1063/1.4765070

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Large area graphene field emitters were fabricated using electrophoretic deposition. By varying the deposition time, we were able to fabricate emitters with varied field enhancement factors. The turn-on field increased when the deposition time increased, and it was observed that a monolayer of graphene flakes covered on the substrate gave the best results. The low emission turn-on field obtained from the graphene field emitters was attributed to the random orientation of graphene flakes which give protruded edges that acted as field enhancing spots. Graphene emitters produced by this method present a low cost cold cathode that can be mass produced. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4765070]

引用

页数：4

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