What is XPS?
XPS is a widely used surface analysis technique. It is based on irradiating a sample
with mono-energetic X-rays causing photoelectrons to be emitted from the sample surface.
The binding energy of the photoelectrons is then determined by an electron energy
analyzer. From the binding energies and intensities photoelectron peaks, the elemental
identities, chemical states, and quantities of the elements present on a surface are
XPS provides information about surface layers or thin film structures that is useful
for applications such as magnetic media, semiconductor and dielectric materials, electronics
packaging, polymer surface modification, catalysis, corrosion, adhesion, and thin