Publikace na Matematicko-fyzikální fakulta |
2015
Abstrakt
Fluorine atoms have been reported as an impurity in cerium oxide; however, their influence on the electronic structure and chemical properties is not well understood yet. We show the changes in Ce 3d photoelectron spectra features induced by fluorine.
We introduce a fitting procedure which allows to evaluate the concentration of fluorine in the cerium oxide layer. A correlation between the fluorine concentration and the characteristic Ce-F interaction doublets added to Ce 3d spectra fits is presented in this Letter.
We studied also the interaction of the prepared layers with small doses of CO and O-2 gases at elevated temperatures.