Optimize the field emission character of a vertical few-layer graphene sheet by manipulating the morphology
Optimize the field emission character of a vertical few-layer graphene sheet by manipulating the morphology
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通过控制形貌优化垂直几层石墨烯片的场致发射特性
DOI：
10.1088/0957-4484/23/1/015202
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发表时间：
2012-01
期刊：
影响因子：
3.5
通讯作者：
Xu Ningsheng
中科院分区：
文献类型：
--
作者：
Zhang Yu;Du Jiale;Tang Shuai;Liu Pei;Deng Shaozhi;Chen Jun;Xu Ningsheng
采用微波等离子体增强化学气相沉积技术制备了垂直少层石墨烯片材。通过调节生长时间和烃气比来控制其形状。讨论了不同生长阶段的生长机理。对不同形状FLG的场发射特性进行了测试，发现尖端形状、高度和非晶碳含量对FLG的场发射特性有很大影响。垂直FLG的最佳形状为层数少、棱角锐利、高度大、无非晶态碳。当导通场为1.8 Vµm−1，最大电流密度为7 mA cm−2时，具有最佳的场发射特性和最佳的形状。
Vertical few-layer graphene (FLG) sheets have been fabricated by using microwave-plasma-enhanced chemical vapour deposition. Their shape was manipulated through adjusting the growth time and hydrocarbon gas ratio. The growth mechanism during different growth stages is discussed. The field emission characteristics for different FLG shapes were tested and found to be strongly influenced by the tip shape, the height and the amorphous carbon content. The optimal shape of vertical FLG for field emission had fewer layers, sharp corners, large height and was free of amorphous carbon. The best field emission properties with the optimal shape were observed with a turn-on field of 1.8 V µm−1 and maximum current density of 7 mA cm−2.
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影响因子：
3.5
作者：
Malesevic, Alexander;Vitchev, Roumen;Van Haesendonck, Chris
通讯作者：
Van Haesendonck, Chris
影响因子：
4
作者：
E. Tam;K. Ostrikov
通讯作者：
E. Tam;K. Ostrikov
DOI：
10.1016/j.phpro.2008.07.080
发表时间：
2008-08
期刊：
Physics Procedia
影响因子：
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作者：
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通讯作者：
Supinda Watcharotone;R. Ruoff;F. H. Read
影响因子：
64.8
作者：
Kim, Keun Soo;Zhao, Yue;Hong, Byung Hee
通讯作者：
Hong, Byung Hee
影响因子：
10.8
作者：
Balandin, Alexander A.;Ghosh, Suchismita;Lau, Chun Ning
通讯作者：
Lau, Chun Ning