Tuning the oxidation states of dopants in Li2SrSiO4:Eu,Ce and control of the photoemission color

A color-tunable phosphor Li2SrSiO4:Eu2+,Eu3+,Ce3+ (LSSO:Eu2+,Eu3+,Ce3+) was synthesized by solid state reaction in reducing atmosphere followed by a controlled heating in air at different temperatures. Due to the different sensitivities to oxidation of the Eu2+ and Ce3+ ions, the emission centers Eu...

Full description

Saved in:
Bibliographic Details
Published inJournal of solid state chemistry Vol. 288; p. 121367
Main Authors Yuan, Hailong, Génois, Romain, Glais, Estelle, Chen, Fei, Shen, Qiang, Zhang, Lianmeng, Faulques, Eric, Massuyeau, Florian, Gautier, Romain
Format Journal Article
LanguageEnglish
Published Elsevier Inc 01.08.2020
Elsevier
Subjects
Color-tunable phosphor
Condensed Matter
Materials Science
Oxidation
Physics
Single-phase
White light
Single-phase
Color-tunable phosphor
Oxidation
White light
Online AccessGet full text

Cover

More Information
Summary:A color-tunable phosphor Li2SrSiO4:Eu2+,Eu3+,Ce3+ (LSSO:Eu2+,Eu3+,Ce3+) was synthesized by solid state reaction in reducing atmosphere followed by a controlled heating in air at different temperatures. Due to the different sensitivities to oxidation of the Eu2+ and Ce3+ ions, the emission centers Eu2+/Eu3+/Ce3+ can coexist in the Li2SrSiO4 host and enable a tunable coloration of the “blue-yellow-red” photoemission. By controling the energy transfer between the different activators, a single phase white phosphor was obtained. The single-phase white emitter Li2SrSiO4:Eu2+,Eu3+,Ce3+ was prepared in reducing atmosphere followed by a controlled oxidation of dopants in air. [Display omitted] •A color-tunable phosphor Li2SrSiO4:Eu2+,Eu3+,Ce3+ was synthesized.•The Eu2+/Eu3+ ratio can be controlled by oxidation at different temperature.•A white light phosphor can be designed through the appropriate Eu2+/Eu3+ ratio.
ISSN:0022-4596
1095-726X
DOI:10.1016/j.jssc.2020.121367