XPS for different oxidation states

In summary, X-ray photoelectron spectroscopy (XPS) is a surface-sensitive technique that can analyze the chemical composition and oxidation state of a material. It works by bombarding a sample with X-rays and measuring the kinetic energy of ejected electrons. XPS is useful for studying surface chemistry and changes in oxidation states over time, but has limitations in accurately representing bulk composition and distribution of oxidation states. It can be used in situ to study kinetics and stability of a material.
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sum555
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Dear All,

for different oxidation states of the same element in X-ray photoelectron spectroscopy measurements, should the full width half maximum (FWHM) value be the same for all? Is this a parameter to fix in this case for the fitting?

I am studying an amorphous transition metal oxide thin film on glass.

Thanks a lot!
 
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I'm sorry you are not finding help at the moment. Is there any additional information you can share with us?
 

FAQ: XPS for different oxidation states

1. What is XPS for different oxidation states?

X-ray photoelectron spectroscopy (XPS) is a surface-sensitive technique used to analyze the chemical composition of a material. It can also provide information about the oxidation state of elements present on the surface.

2. How does XPS determine different oxidation states?

XPS works by bombarding a sample with X-rays, causing the outermost electrons of the atoms to be ejected. The kinetic energy of these electrons is then measured, which can provide information about the oxidation state of the elements present.

3. Why is XPS useful for studying different oxidation states?

XPS can provide valuable information about the chemical bonding and electronic structure of a material, which can be affected by changes in oxidation state. This makes it a powerful tool for studying the surface chemistry of a material.

4. What are some limitations of XPS for studying different oxidation states?

XPS is a surface-sensitive technique, so it may not accurately represent the bulk composition of a material. Additionally, it cannot provide information about the distribution of oxidation states within a material.

5. How can XPS be used to study changes in oxidation states over time?

XPS can be used in situ, meaning it can analyze a material while it is undergoing a chemical reaction or environmental changes. This allows for the study of changes in oxidation states over time, providing insight into the kinetics of the reaction or the stability of a material.

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