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Evidence for the Diffusion of Au Atoms into the Te UPD Layer Formed on a Au(111) Substrate

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Title: Evidence for the Diffusion of Au Atoms into the Te UPD Layer Formed on a Au(111) Substrate
Authors: Kawamura, Hiroyuki Browse this author
Takahasi, Masamitu Browse this author
Hojo, Nobuhiko Browse this author
Miyake, Masao Browse this author
Murase, Kuniaki Browse this author
Tamura, Kazuhisa Browse this author
Uosaki, Kohei Browse this author →KAKEN DB
Awakura, Yasuhiro Browse this author
Mizuki, Jun'ichiro Browse this author
Matsubara, Eiichiro Browse this author
Keywords: tellurium
surface diffusion
X-ray diffraction
voltammetry (chemical analysis)
Issue Date: 2002
Publisher: The Electrochemical Society
Journal Title: Journal of The Electrochemical Society
Volume: 149
Issue: 2
Start Page: C83
End Page: C88
Publisher DOI: 10.1149/1.1429928
Abstract: The structure of a Te layer formed on a Au(111) substrate by underpotential deposition (UPD) in an electrolytic solution has been studied using in situ surface X-ray diffraction technique. The measurements were carried out for a series of samples which were kept at UPD potential for 4 to 59 h. The results revealed that the Te UPD layer is unstable. The top layer is analyzed to consist of the UPD Te atoms and Au atoms which diffuse from the Au(111) substrate. Also, the Te UPD layer does not have the structure with periodicity reported in previous works, such as (√3 x √3)R30° after ample time elapses. Stripping voltammetry for the Te UPD layer shows that the interaction between Te and Au increases with time, supporting the finding that the top layer is a mixture of Te and Au.
Rights: © The Electrochemical Society, Inc. 2001. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in J. Electrochem. Soc. 2002 volume 149, issue 2, C83-C88.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 魚崎 浩平

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