How to calculate the charge ratio from XPS study?

28 December 2020 1 1K Report

For example, I have fitted the Mn 2P3/2 peak of two different samples with Mn3+, Mn2+, Mn4+

I want to check the ratio value of Mn3+/Mn2+ of these samples. How can I calculate can anyone help out? From this problem

Jürgen Weippert

If you stay within one single peak type as in this case Mn2P3/2, the stoichiometric fractions are directly proportional to the peak integrals. Thus, if you want percentages for your charge states, you just have to normalize the sum of the peak integrals to 100%.

Side question: how large is your Mn3+ fraction? That's a rather labile species and therefore having a large fraction of it means you have to be really certain about your data.

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