Photoelectron spectroscopy—An overview

We give an overview about the development of photoelectron spectroscopy (PES) from first historic observations of the photoelectric effect to state-of-the-art experiments. We present selected examples for the application of PES for chemical analysis of solids (ESCA), the determination of the valence band structure by angle resolved photoelectron spectroscopy (ARUPS), and the investigation of many-body effects by high-resolution PES. Furthermore, we give a brief introduction to the possibilities of spacially resolved PES and PES with high photon energies.