Publication

Na Hyperoxidation States Studied by Core-Level Spectroscopy

Giorgio Margaritondo
1994
Journal Articles

Abstract

In order to investigate the formation and the time evolution of Na oxidation states, a thin ayer 0 sodium was deposited on oxidized substrates and exposed to oxygen at 10(-9) Torr. In the Na 2p core-level spectrum, several chemically shifted components have been observed, denoting the presence of non-stoichiometric Na oxidation states, whose binding energy is substrate independent. Modification of these states, with oxygen exposure has been observed by detecting the increase in intensity of the corresponding shifted components and the consequent decrease of the clean features: the stationary configuration is reached in a time tau = 10(3) S.

Official source

https://infoscience.epfl.ch/entities/publication/fe648b71-b8cb-4008-a319-49d67455f7f2

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Giorgio Margaritondo
1994
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/fe648b71-b8cb-4008-a319-49d67455f7f2

About this result

Related concepts (32)

X-ray photoelectron spectroscopy

X-ray photoelectron spectroscopy (XPS) is a surface-sensitive quantitative spectroscopic technique based on the photoelectric effect that can identify the elements that exist within a material (elemental composition) or are covering its surface, as well as their chemical state, and the overall electronic structure and density of the electronic states in the material. XPS is a powerful measurement technique because it not only shows what elements are present, but also what other elements they are bonded to.

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Auger electron spectroscopy

Auger electron spectroscopy (AES; pronounced oʒe in French) is a common analytical technique used specifically in the study of surfaces and, more generally, in the area of materials science. It is a form of electron spectroscopy that relies on the Auger effect, based on the analysis of energetic electrons emitted from an excited atom after a series of internal relaxation events. The Auger effect was discovered independently by both Lise Meitner and Pierre Auger in the 1920s.

Related publications (1)

Na Hyperoxidation States Studied by Core-Level Spectroscopy

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