Role of f-Orbital Electron Wave Function Mixing in the Concentration Quenching of Eu3+

Abstract
The dependencies of intensity of emission of Eu3+ upon its concentration have been examined for several oxide systems which differ in structural arrangements and cation charge type. The data show that concentration quenching increases with the rise of perturbing influences which probably result from the mixing of the f‐orbital wave functions of different Eu3+ ions through a lattice band process.