Specific Process Knowledge/Characterization/XPS/Processing/Basics/3fitting: Difference between revisions
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== Fitting the oxygen O1s core level == | == Fitting the oxygen O1s core level == | ||
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[[Image:XPS-oxygenCapture 0011.PNG|300px| Level 11]] | [[Image:XPS-oxygenCapture 0011.PNG|300px| Level 11]] | ||
[[Image:XPS-oxygenCapture 0033.PNG|300px| Level 20]] | [[Image:XPS-oxygenCapture 0033.PNG|300px| Level 20]] | ||
We can establish that | |||
* The main peak remains at fixed binding energy, and | |||
* There is a shoulder at higher binding energy | |||
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Fitting the oxygen O1s core level
There is a few choices to make on the fitting of the O1s level. The level is an s-orbital and thus gives rise to a peak that is symmetric so any non-symmetric appearance must be caused several states of oxygen. The question is then to which states of oxygen they should be attributed. Below are shown the spectra of levels 0 (surface), 11 and 20.
We can establish that
- The main peak remains at fixed binding energy, and
- There is a shoulder at higher binding energy