When I reported the binding energy of c=o and c-o 288.6 and 286.6 respectively to a journal, the reviewers told that binding energy of these components are high. I got these values from previously reported articles. Can anyone please guide me in this regard? My educational background is biology and I am new to XPS analysis. I will be really grateful for your responses.
Dear,
If not yet answered, please contact me via e-mail and our team guide you further with details on the required binding energies (reference hand books, ...).
Kind regards,
Peter Dubruel
There are a number of good references available as well as the ASTM standards and International Standard ISO 15472 prepared by Technical Committee ISO/TC 201 (Surf. Interface Anal. 2001; 31: 721–723, search for the latest update) on calibration.
The energy positions depend on a number of instrument parameters: To name a few
1. Calibration of the spectrometer energy scale (workfunction and dispersion)?
2. When last was the instrument calibrated?
3. Is the x-ray source fitted with a monochromator?
4. X-ray anode used
5. Pass energy/aperture used during the detail scans
6. Energy step size
7. Sweep rate
8. Count rate
Other parameters:
9. Was the energy range, in the detail scans, wide enough for proper background subtraction?
10. Did you compensate for any charging and if so how?
11. Is your specimen stable under radiation?
The energy positions are also influenced by the fit parameters:
12. Number of peaks in the energy envelope
13. FWHM of the peaks
14. Symmetry of the peaks (Gaussian/Lorentian).
15. Restrictions on any of the fit parameters.
16. Background range selection
17. Background subtraction (linear, Shirly, Tougaard – end points averaging) etc.
Regards
Dear all... Thank You You very Much for Your valuable Information. Dear Dr Peter Dubruel we would contact you in case we have further doubts...
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