Artículo
Experimental and theoretical investigation of the electronic structure of Cu2O and CuO thin films on Cu(110) using x-ray photoelectron and absorption spectroscopy
Jiang, Peng; Prendergast, David; Borondics, Ferenc; Porsgaard, Soeren; Giovanetti, Lisandro Jose
; Pach, Elzbieta; Newberg, John; Bluhm, Hendrik; Besenbacher, Flemming; Salmeron, Miquel
Fecha de publicación:
01/2013
Editorial:
American Institute of Physics
Revista:
Journal of Chemical Physics
ISSN:
0021-9606
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The electronic structure of Cu2O and CuO thin films grown on Cu(110) was characterized by X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS). The various oxidation states, Cu0, Cu+, and Cu2+, were unambiguously identified and characterized from their XPS and XAS spectra. We show that a clean and stoichiometric surface of CuO requires special environmental conditions to prevent loss of oxygen and contamination by background water. First-principles density functional theory XAS simulations of the oxygen K edge provide understanding of the core to valence transitions in Cu+ and Cu 2+. A novel method to reference x-ray absorption energies based on the energies of isolated atoms is presented.
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Articulos(INIFTA)
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Citación
Jiang, Peng; Prendergast, David; Borondics, Ferenc; Porsgaard, Soeren; Giovanetti, Lisandro Jose; et al.; Experimental and theoretical investigation of the electronic structure of Cu2O and CuO thin films on Cu(110) using x-ray photoelectron and absorption spectroscopy; American Institute of Physics; Journal of Chemical Physics; 138; 2; 1-2013; 1-6; 024704
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