Characterizing the geometric and electronic structure of defects in the "29" copper surface oxide

Andrew J. Therrien, Alyssa J.R. Hensley, Renqin Zhang, Alex Pronschinske, Matthew D. Marcinkowski, Jean Sabin McEwen, E. Charles H. Sykes

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The geometric and electronic structural characterization of thin film metal oxides is of fundamental importance to many fields such as catalysis, photovoltaics, and electrochemistry. Surface defects are also well known to impact a material's performance in any such applications. Here, we focus on the "29" oxide Cu2O/Cu(111) surface and we observe two common structural defects which we characterize using scanning tunneling microscopy/spectroscopy and density functional theory. The defects are proposed to be O vacancies and Cu adatoms, which both show unique topographic and spectroscopic signatures. The spatially resolved electronic and charge state effects of the defects are investigated, and implications for their reactivity are given.

Original languageEnglish
Article number224706
JournalJournal of Chemical Physics
Volume147
Issue number22
DOIs
StatePublished - 14 Dec 2017

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