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题名: Oxygen adsorption on Ag/Si(111)-7x7 surfaces
作者: Zhang, Zhen1;  Jiao, Jian1;  Jiang, Zhiquan1;  Tan, Dali1;  Fu, Qiang1;  Bao, Xinhe1;  Liu, Xi2;  Jia, Jinfeng2;  Xue, Qikun2
通讯作者: 包信和
刊名: JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
发表日期: 2008
DOI: 10.1116/1.2816938
卷: 26, 期:1, 页:62-67
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 502
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Materials Science, Coatings & Films ;  Physics, Applied
研究领域[WOS]: Materials Science ;  Physics
英文摘要: The growth of Ag clusters on Si(111)-7 x 7 surfaces was studied by scanning tunneling microscopy (STM), ultraviolet photoelectron spectroscopy, and x-ray photoelectron spectroscopy (XPS). A shift in the Ag 3d binding energy and a noticeable change in the valence-band structure reveal a significant modification of the electronic states of the Si(111)-7 X 7 surface and the dispersed Ag clusters, which had a strong dependence on the coverage of Ag. Furthermore, these Ag clusters deposited on the Si surface alter the behavior of oxygen adsorption on the Si(111)-7 X 7 surface. As evidenced by XPS, the presence of Ag inhibits the adsorbed surface oxygen species, the ins-ins and ad-ins oxygen, in which "ad" denotes an O atom bonding on top of the Si adatom and "ins" denotes an O atom inserted into a Si adatom back bond. The STM and high-resolution electron energy loss spectroscopy results show that the ins-ins oxygen species are more significantly suppressed by the Ag clusters compared to the ad-ins oxygen. (C) 2008 American Vacuum Society.
关键词[WOS]: ENERGY-LOSS SPECTROSCOPY ;  AUGER-ELECTRON-SPECTROSCOPY ;  STAGE OXIDATION-PRODUCTS ;  SI(111)7X7 SURFACE ;  ROOM-TEMPERATURE ;  INITIAL-STAGES ;  SI(111)-(7X7) OXIDATION ;  ULTRATHIN FILMS ;  MODEL CATALYSTS ;  AG
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000252982100010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100583
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.Chinese Acad Sci, Inst Phys, State Key Lab Surface Phys, Beijing 100080, Peoples R China

Recommended Citation:
Zhang, Zhen,Jiao, Jian,Jiang, Zhiquan,et al. Oxygen adsorption on Ag/Si(111)-7x7 surfaces[J]. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A,2008,26(1):62-67.
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