The local structure of the Ce3+ ion in the yellow emitting YAG:Ce phosphor has been studied by Extended X-ray Absorption Fine Structure spectroscopy in the 20-300 K temperature range. It is shown that the dopant Ce3+ replaces Y3+ in the garnet structure, giving rise to a significant expansion of the distorted cubic local structure, limited to the nearest neighbours coordination sphere only. The experimental Ce-O distances in the YAG structure obtained in this study are in good agreement with the recently published values, derived from periodic-boundary-conditions density functional theory calculations. © 2011 Elsevier B.V. All rights reserved.
Ghigna, P., Pin, S., Ronda, C., Speghini, A., Piccinelli, F., & Bettinelli, M. (2011). Local structure of the Ce3+ ion in the yellow emitting phosphor YAG:Ce. Optical Materials, 34(1), 19–22. https://doi.org/10.1016/j.optmat.2011.07.015