What Is Photoelectron Spectroscopy?

Photoelectron spectroscopy uses the principle of the photoelectric effect to measure the kinetic energy (and thus the binding energy), photoelectron intensity and angular distribution of photoelectrons emitted from a sample of monochromatic radiation from a sample, and applies this information to A technique for studying the electronic structure of atoms, molecules, condensed phases, especially solid surfaces. For solids, photoelectron spectroscopy is a surface-sensitive technique. Although incident photons can penetrate deep into the solid, only the photoelectrons in a thin layer of 20-30 angstroms under the surface of the solid can escape (the average free path of inelastic scattering of photons is 10-10 times larger than that of electrons), so photoelectrons Reflects information from solid surfaces.