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题名: Effect of Substrate Surface Reconstruction on Interaction with Adsorbates: Pt on 6H-SiC(0001)
作者: Wang, Zhen1;  Fu, Qiang1;  Bao, Xinhe1
刊名: LANGMUIR
发表日期: 2010-05-18
DOI: 10.1021/la904343w
卷: 26, 期:10, 页:7227-7232
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: Three reconstructed 6H-SiC(0001) surfaces, including a Si-rich 3 x 3 surface, a C-rich 6 root 3 x 6 root 3 surface, and a graphitized SiC surface, were used as substrates for the deposition of Pt overlayers. The interaction between Pt and the SiC(0001) surfaces was studied by X-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy (STM). Pt reacts readily with the 3 x 3 surface to form platinum suicide even at room temperature. On the graphitized SiC surface, metal particles with low lateral dispersion form and keep on aggregating upon annealing. In contrast, homogeneously distributed small Pt nanoclusters were grown on the C-rich 6 root 3 x 6 root 3 surface. The unique nanomesh surface structure helps to stabilize the Pt nanoclusters until 500 C. Above 1000 C, Pt tends to diffuse into the subsurface region, forming the C/Pt silicide/SiC(0001) interface structure. The different surface electronic structures of the three Pt/SiC(0001) systems were discussed as well. The present data show that surface reconstruction provides;in effective route to control the growth of metal overlayers and the formation of metal/substrate interfaces.
关键词[WOS]: SILICON-CARBIDE ;  ELECTRON-DIFFRACTION ;  EPITAXIAL GRAPHENE ;  ATOMIC-STRUCTURE ;  CORE-LEVEL ;  STM ;  MORPHOLOGY ;  SIC(0001) ;  SEMICONDUCTOR ;  SPECTROSCOPY
语种: 英语
WOS记录号: WOS:000277398600050
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141902
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

Recommended Citation:
Wang, Zhen,Fu, Qiang,Bao, Xinhe. Effect of Substrate Surface Reconstruction on Interaction with Adsorbates: Pt on 6H-SiC(0001)[J]. LANGMUIR,2010,26(10):7227-7232.
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