Physical vapor deposition of Ga on polycrystalline Au surfaces studied using X-ray photoelectron spectroscopy

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Details zur Publikation

Autor(en): Grabau M, Steinrück HP, Papp C
Zeitschrift: Surface Science
Verlag: ELSEVIER SCIENCE BV
Jahr der Veröffentlichung: 2018
Band: 677
Seitenbereich: 254-257
ISSN: 0039-6028


Abstract

We studied the deposition of Ga onto polycrystalline Au surfaces at room temperature by X-ray photoelectron spectroscopy (XPS). We find the formation of an alloy film with an average composition of Au7Ga3 in the near surface region probed by XPS, as deduced from qualitative and quantitative analysis of the Ga 2p(3/2), Ga 3d and Au 4f signals. The formation of the Au7Ga3 alloy is reversed, and the original spectroscopic Au 4f fingerprint is restored upon exposure of the alloy to molecular oxygen at elevated pressures and elevated temperatures. We find the formation of a GaxOy film on top of the Au substrate, which goes along with a dealloying of the surface near Au7Ga3 alloy phase.


FAU-Autoren / FAU-Herausgeber

Grabau, Mathias Dr.
Lehrstuhl für Physikalische Chemie II
Papp, Christian PD Dr.
Lehrstuhl für Physikalische Chemie II
Steinrück, Hans-Peter Prof. Dr.
Lehrstuhl für Physikalische Chemie II


Zitierweisen

APA:
Grabau, M., Steinrück, H.-P., & Papp, C. (2018). Physical vapor deposition of Ga on polycrystalline Au surfaces studied using X-ray photoelectron spectroscopy. Surface Science, 677, 254-257. https://dx.doi.org/10.1016/j.susc.2018.07.011

MLA:
Grabau, Mathias, Hans-Peter Steinrück, and Christian Papp. "Physical vapor deposition of Ga on polycrystalline Au surfaces studied using X-ray photoelectron spectroscopy." Surface Science 677 (2018): 254-257.

BibTeX: 

Zuletzt aktualisiert 2019-01-02 um 12:23