title: A Chemical Route Towards Single-Phase Materials with Controllable Photoluminescence.
abstract: A promising general approach is proposed that enables the controlled reduction of dopants to tune the photoluminescence properties of single-phase materials. The change of oxidation state of dopants in phosphor phases leads to different emission colors that can be finely tuned. This approach was illustrated with the progressive reduction of the red phosphor SrAl2O4:Eu(3+) to green phosphor SrAl2O4:Eu(2+) to target yellow luminescence.
authors.affiliation: Centre National de la Recherche Scientifique CNRS-IMN, 2 rue de la Houssinière, 44300 Nantes (France).
authors.forename: Gaganpreet
authors.initials: G
authors.lastname: Kaur Behrh
authors.affiliation: Centre National de la Recherche Scientifique CNRS-IMN, 2 rue de la Houssinière, 44300 Nantes (France).
authors.forename: Hélène
authors.initials: H
authors.lastname: Serier-Brault
authors.affiliation: Centre National de la Recherche Scientifique CNRS-IMN, 2 rue de la Houssinière, 44300 Nantes (France).
authors.forename: Stéphane
authors.initials: S
authors.lastname: Jobic
authors.affiliation: Centre National de la Recherche Scientifique CNRS-IMN, 2 rue de la Houssinière, 44300 Nantes (France). romain.gautier@cnrs-imn.fr.
authors.forename: Romain
authors.initials: R
authors.lastname: Gautier
keywords: controlled reduction; dopants; doped SrAl2O4; europium; photoluminescence