Engineering the field emission properties of graphene film by gas adsorbates

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	Engineering the field emission properties of graphene film by gas adsorbates
	Li, J ; Yan, XB ; Gou, GY ; Wang, Z ; Chen, JT
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2014
卷号	16 期号:5 页码:1850
ISSN号	1463-9076
通讯作者	Yan, XB (reprint author), Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China.
中文摘要	We study the effect of different gas adsorbates (N-2, O-2, and CO2) on the field emission (FE) properties of graphene film. Our experimental measurements show that, except for N-2, adsorption of O-2 and CO2 reduces the FE current of the graphene film. Moreover, the measured FE hysteresis loop is almost quenched after adsorbing O-2 or CO2. The ab initio calculations quantify the experimental results by predicting a larger work function and smaller FE current for the graphene system after O-2 or CO2 adsorption. In contrast, the change of FE properties in N-2 adsorbed graphene is negligible. A "depolarization electric field model" is then proposed to explain the observed FE hysteresis behavior.
资助信息	Ministry of Science and Technology of China through a 973-Project [2012CB619401, 2012CB619402]; Natural Science Foundation of China [51002161, 11204230, 11204228]; Top Hundred Talents Program of Chinese Academy of Sciences
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59452]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Li, J,Yan, XB,Gou, GY,et al. Engineering the field emission properties of graphene film by gas adsorbates[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2014,16(5):1850.
APA	Li, J,Yan, XB,Gou, GY,Wang, Z,&Chen, JT.(2014).Engineering the field emission properties of graphene film by gas adsorbates.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,16(5),1850.
MLA	Li, J,et al."Engineering the field emission properties of graphene film by gas adsorbates".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16.5(2014):1850.