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题名: An Exchange Intercalation Mechanism for the Formation of a Two-Dimensional Si Structure Underneath Graphene
作者: Cui, Yi1;  Gao, Junfeng2;  Jin, Li1;  Zhao, Jijun2;  Tan, Dali1;  Fu, Qiang1;  Bao, Xinhe1
关键词: Graphene ;  photoemission electron microscopy (PEEM) ;  low energy electron microscopy (LEEM) ;  intercalation ;  silicon ;  Ru(0001)
刊名: NANO RESEARCH
发表日期: 2012-05-01
DOI: 10.1007/s12274-012-0215-4
卷: 5, 期:5, 页:352-360
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary ;  Physics, Applied
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: A two-dimensional (2D) Si film can form between a graphene overlayer and a Ru(0001) substrate through an intercalation process. At the graphene/2D-Si/Ru(0001) surface, the topmost graphene layer is decoupled from the Ru substrate and becomes quasi-freestanding. The interfacial Si layers show high stability due to the protection from the graphene cover. Surface science measurements indicate that the surface Si atoms can penetrate through the graphene lattice, and density functional theory calculations suggest a Si-C exchange mechanism facilitates the penetration of Si at mild temperatures. The new mechanism may be involved for other elements on graphene, if they can bond strongly with carbon. This finding opens a new route to form 2D interfacial layers between graphene and substrates.
关键词[WOS]: BIMETALLIC SURFACES ;  NI(111) SURFACE ;  RU(0001) ;  GROWTH ;  DEPOSITION ;  CLUSTERS ;  FILMS
语种: 英语
WOS记录号: WOS:000304114100006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142970
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Minist Educ, Key Lab Mat Modificat Laser Ion & Elect Beams, Dalian 116024, Peoples R China

Recommended Citation:
Cui, Yi,Gao, Junfeng,Jin, Li,et al. An Exchange Intercalation Mechanism for the Formation of a Two-Dimensional Si Structure Underneath Graphene[J]. NANO RESEARCH,2012,5(5):352-360.
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