A Comparative Photoemission Study of Ceria and Gold-doped Ceria /Cu(111) Interfaces

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F09%3A00206537" target="_blank" >RIV/00216208:11320/09:00206537 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
A Comparative Photoemission Study of Ceria and Gold-doped Ceria /Cu(111) Interfaces
Original language description
We have studied the electronic states in three different ceria thin film surfaces prepared on a Cu(111) single-crystal surface by vapor deposition at different conditions: at 250 °C, at room temperature and finally Au-doped ceria film obtained by simultaneous deposition of Au and CeO2 at room temperature (RT). Electronic properties of the layers and interaction of gold with CeO2 were investigated with use of synchrotron-radiation-excited PES and resonant photoemission (Ce 4d 4f transitions). We have observed partial Ce4 Ce3 reduction induced by decrease of deposition temperature to RT instead 250 °C and also by doping ceria by gold, accompanied by a 4f resonance enhancement of the Ce3 species. In the case of Au-doped sample the surface reduction degreeis stronger and can be explained by the possible creation of new ionic Au state peaks observed in the Au 4f spectra.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
WDS´09 Proceedings of Contributed Papers: Part III - Physics
ISBN
978-80-7378-103-3
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
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Publisher name
Matfyzpress
Place of publication
Prague
Event location
Prague
Event date
Jan 1, 2009
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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