Extra-Atomic Relaxation Effect on the Binding Energy of Reference Gold in X-Ray Photoelectron Spectroscopy

Abstract

The charge shift correction which utilizes the 4f712 binding energy (Eb) of evaporated gold as the reference is investigated for BN, InP, Si02 and A1203 substrates. The change in the final-state relaxation process in low coverage region (<2 monolayers) produces inaccuracy of as much as 1 eV of binding energy, determined by the gold evaporation method. It is possible to use the 4f7/2 binding energy of evaporated gold as an energy reference in X-ray photoelectron spectroscopy in the coverage region above 2 monolayers. © 1985, The Japan Society for Analytical Chemistry. All rights reserved.