Vertically expand the spectrum to look at the baseline.Background Endpoints and Endpoint Averaging.There are other backgrounds that “actively” change the background and the peak-fit to produce a well define result expected by the analyst.The Tougaard background is not used on any spectra in this database.In various cases neither of these background types will give a best result.Shirley was originally designed for use on the Valence Band spectrum of Pure Gold.Shirley and Sherwood (Proctor) are used when the baseline above the peaks is definitely higher than the lower baseline for conductors.

Shirley and Sherwood were developed to be used on conductive materials, and are often used on insulators for convenience, without scientific basis.

Linearis preferred (almost flat) for nearly all insulators and a few conductors.

This helps us to locate a valid flat baseline region at the low BE end and reveals small peaks at high BE end.

Vertically expand all spectra to get a look at the onset upward curving region of the peak at high BE.

The other information is a guide for alternative methods or special methods to help the XPS analyst peak-fit chemical state spectra. The words highlighted using Dark-Red Boldlettering are the methods used on most of the spectra in The International XPS Database of XPS Spectra.

Used to Peak-fit Chemical State Spectra inĪfter “Data Processing and Charge Shifting” all chemical state spectra, then you must choose the Peak-fitting Parameters for your spectra For practical reasons we used the C (1s) spectra from the naturally formed layer of adventitious hydrocarbons because that signal is the “de facto” standard for charge referencing insulating materials. We have assumed that the most XPS laboratories need practical reference spectra and will not spend the time or money to produce and to analyze pure, clean surfaces under ultimate energy resolution conditions. Our philosophy is to collect spectra under analysis conditions that are practical, readily reproduced, and typically used in laboratories that use monochromatic X-ray sources and work under real world practical analysis conditions. The International XPS Database of XPS Spectra Used to Peak-fit Chemical Compound Spectra in

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