On the phosphorescence mechanism in SrAl<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup> and its codoped derivatives
hal.structure.identifier | Institut des Matériaux Jean Rouxel [IMN] | |
dc.contributor.author | CLABAU, Frédéric | |
hal.structure.identifier | Institut des Matériaux Jean Rouxel [IMN] | |
dc.contributor.author | ROCQUEFELTE, Xavier | |
hal.structure.identifier | Institut des Matériaux Jean Rouxel [IMN] | |
dc.contributor.author | JOBIC, Stéphane | |
hal.structure.identifier | Institut des Matériaux Jean Rouxel [IMN] | |
dc.contributor.author | DENIARD, Philippe | |
hal.structure.identifier | Department of Chemistry, North Carolina Raleigh | |
dc.contributor.author | WHANGBO, Myung-Hwan | |
hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
dc.contributor.author | GARCIA, Alain | |
hal.structure.identifier | Centre de Recherches d'Aubervilliers | |
dc.contributor.author | LE MERCIER, Thierry | |
dc.date.issued | 2007 | |
dc.identifier.issn | 1293-2558 | |
dc.description.abstractEn | The mechanism of phosphorescence in SrAl<sub>2</sub>O<sub>4</sub>:Eu,Dy material is discussed on the basis of a thermo-activated release of electrons trapped at oxygen vacancy sites. The depths and concentration of the electron traps are strongly affected by codoping with trivalent lanthanide cations Ln<sup>3+</sup>. This finding is rationalized by comparing the ionization potentials of the dopant cation Eu<sup>2+</sup>, the codopant cation Ln<sup>3+</sup> and the substituted cation Sr<sup>2+</sup>. Such a use of ionization potentials provides a practical guide with which the variation of the phosphorescent decay time in the codoped derivatives of SrAl<sub>2</sub>O<sub>4</sub>:Eu is predicted. | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.subject.en | Phosphorescence | |
dc.subject.en | Mechanism | |
dc.subject.en | SrAl2O4 | |
dc.subject.en | Electron trap | |
dc.subject.en | Dopant | |
dc.subject.en | Trap depth | |
dc.title.en | On the phosphorescence mechanism in SrAl<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup> and its codoped derivatives | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1016/j.solidstatesciences.2007.03.020 | |
dc.subject.hal | Chimie/Matériaux | |
bordeaux.journal | Solid State Sciences | |
bordeaux.page | 608-612 | |
bordeaux.volume | 9 | |
bordeaux.issue | 7 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-00359214 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-00359214v1 | |
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