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Ultraviolet Photoelectron Spectroscopy (UPS)

(Kopie 2)

UPS spectrum of a surface covered with benzene. The bands can be assigned to characteristic bond orbitals in the benzene molecule.

Ultraviolet Photoelectron Spectroscopy (UPS) is an electron spectroscopic procedure, with which the electronic structure of a surface can be studied. To this end, the surface is beams with ultraviolet light and the kinetic energy of the photo-emitted valence electrons is measured. The image of the occupied electronic valence states acquired in this way enables conclusions to be drawn regarding the chemical compounds on the surface. UPS can therefore be used for the chemical analysis of a surface, among other uses.




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