The room temperature (RT) formation of the interface between metals (Cr, Sn, Ag) and the SnO2 surface was studied by Synchrotron Radiation induced UPS. The Sn4d core level and the Valence Band were monitored as a function of metal growth starting from submonolayer regime. At low monolayer coverages a redox reaction with different rate and evolution depending on metal reactivity, arises between the Cr and Sn atoms and the SnO2 surface, oxidizing the overlayer and reducing the Sn cation at the interface. Deposition of less reactive Ag film leaves the stoichiometry of the substrate unchanged. However, in this case as well as for Cr, at high metal coverage the metallic tin segregation is observed.

Padova, P., Larciprete, R., Mangiantini, M., & Fanfoni, M. (1995). Cr, Sn and Ag/SnO2 interface formation studied by synchrotron radiation induced UPS. In Journal of Electron Spectroscopy and Related Phenomena (pp.499-504). AMSTERDAM : ELSEVIER SCIENCE BV.

Cr, Sn and Ag/SnO2 interface formation studied by synchrotron radiation induced UPS

FANFONI, MASSIMO
1995

Abstract

The room temperature (RT) formation of the interface between metals (Cr, Sn, Ag) and the SnO2 surface was studied by Synchrotron Radiation induced UPS. The Sn4d core level and the Valence Band were monitored as a function of metal growth starting from submonolayer regime. At low monolayer coverages a redox reaction with different rate and evolution depending on metal reactivity, arises between the Cr and Sn atoms and the SnO2 surface, oxidizing the overlayer and reducing the Sn cation at the interface. Deposition of less reactive Ag film leaves the stoichiometry of the substrate unchanged. However, in this case as well as for Cr, at high metal coverage the metallic tin segregation is observed.
6th International Conference on Electron Spectroscopy (ICES 6)
ROME, ITALY
JUN 19-23, 1995
Univ La Sapienza, Univ Tor Vergata, Univ Rome III, CNR, Gruppo Nazionale Struttura Materia
Rilevanza internazionale
contributo
Settore FIS/03 - Fisica della Materia
English
PHOTOEMISSION; TIO2(110); TIN; SPECTROSCOPY; OVERLAYERS; PLATINUM; GROWTH
Intervento a convegno
Padova, P., Larciprete, R., Mangiantini, M., & Fanfoni, M. (1995). Cr, Sn and Ag/SnO2 interface formation studied by synchrotron radiation induced UPS. In Journal of Electron Spectroscopy and Related Phenomena (pp.499-504). AMSTERDAM : ELSEVIER SCIENCE BV.
Padova, P; Larciprete, R; Mangiantini, M; Fanfoni, M
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/44988
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