Interfacial properties of bilayer and trilayer graphene on metal substrates.
Interfacial properties of bilayer and trilayer graphene on metal substrates.
复制标题
金属基底上双层和三层石墨烯的界面特性
DOI:
10.1038/srep02081
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发表时间:
2013
影响因子:
4.6
通讯作者:
Lu, Jing
中科院分区:
文献类型:
--
作者:
Zheng, Jiaxin;Wang, Yangyang;Wang, Lu;Quhe, Ruge;Ni, Zeyuan;Mei, Wai-Ning;Gao, Zhengxiang;Yu, Dapeng;Shi, Junjie;Lu, Jing
One popular approach to prepare graphene is to grow them on transition metal substrates via chemical vapor deposition. By using the density functional theory with dispersion correction, we systematically investigate for the first time the interfacial properties of bilayer (BLG) and trilayer graphene (TLG) on metal substrates. Three categories of interfacial structures are revealed. The adsorption of B(T)LG on Al, Ag, Cu, Au and Pt substrates is a weak physisorption, but a band gap can be opened. The adsorption of B(T)LG on Ti, Ni and Co substrates is a strong chemisorption and a stacking-insensitive band gap is opened for the two uncontacted layers of TLG. The adsorption of B(T)LG on Pd substrate is a weaker chemisorption, with a band gap opened for the uncontacted layers. This fundamental study also helps for B(T)LG device study due to inevitable graphene/metal contact.
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