Optical spectroscopy study of Eu-doped ions in BaAl2O4 phosphors

Rezende, MV dos S; Valerio, MEG; Araujo, RM; Jackson, R; dos Santos Mattos, EF; dos Santos Junior, BF

doi:10.1016/j.jlumin.2021.118011

Optical spectroscopy study of Eu-doped ions in BaAl2O4 phosphors

Rezende, MV dos S; Valerio, MEG; Araujo, RM; Jackson, R; dos Santos Mattos, EF; dos Santos Junior, BF

Authors

MV dos S Rezende

MEG Valerio

RM Araujo

Robert Jackson r.a.jackson@keele.ac.uk

EF dos Santos Mattos

BF dos Santos Junior

Abstract

Computational and experimental methodology is employed to study optical properties in Eu-doped BaAl2O4 phosphors. The symmetry and detailed geometry of the Eu-dopant site, predicted by atomistic simulation, are used to calculate the crystal field parameters and the intensity parameters (O2 and O4) based on a Judd-Ofelt approach to the Eu3+ ion. The phenomenological intensity parameters are obtained from the emission spectra of the Eu-doped BaAl2O4 and compared to the theoretical results. Experimental and calculated values for the 7F1 energy sub-levels of the Eu3+ and maximum Stark splittings (?Emax) are also obtained.

Acceptance Date	Feb 23, 2021
Publication Date	Aug 1, 2021
Journal	Journal of Luminescence
Print ISSN	0022-2313
Publisher	Elsevier
Pages	1-5
DOI	https://doi.org/10.1016/j.jlumin.2021.118011
Keywords	Intensity parameters; Simple overlap model; Optical properties
Publisher URL	https://www.sciencedirect.com/science/article/pii/S0022231321001277?via%3Dihub