Optical spectroscopy and magnetic behaviour of Sm3+ and Eu3+ cations in Li6Eu1-xSmx(BO3)3 solid solution
| hal.structure.identifier | Laboratoire d'Electronique Quantique | |
| hal.structure.identifier | Faculté des Sciences - Département de Physique | |
| dc.contributor.author | BELHOUCIF, Rekia | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | VELÁZQUEZ, Matias | |
| hal.structure.identifier | CSNSM PS2 | |
| dc.contributor.author | PLANTEVIN, Olivier | |
| dc.contributor.author | ASCHEHOUG, Patrick | |
| dc.contributor.author | GOLDNER, Philippe | |
| hal.structure.identifier | CSNSM PS2 | |
| dc.contributor.author | GEORGE, C. | |
| dc.date.issued | 2017-11 | |
| dc.identifier.issn | 0925-3467 | |
| dc.description.abstractEn | A new borate solid solution series of powders, Li6Eu1-xSmx(BO3)3 (LSEBx, x = 0.35, 0.5, 0.6, 1), were synthesized by solid-state reaction, characterized and their luminescent properties were investigated. The absorption spectra indicate that absorption takes place mainly from the Sm3+6H5/2 ground state, with a strong band at 405 nm. The photoluminescence spectra reveal that the Eu3+ red emission intensity strongly depends on the Sm3+ content x. Judd-Ofelt theory was applied to experimental data for the quantitative determination of phenomenological parameters Ωi (i = 2, 4, 6) Judd Ofelt parameters, radiative transition rates and emission quantum efficiency. Owing to the energy transfer from Sm3+ to Eu3+ the intense red light detected at 613 nm at room temperature under UV or blue light excitation, was improved by ∼35% as compared with Sm3+-free samples. This energy transfer was confirmed by faster decay times of Sm3+ as energy donors. Moreover, the energy transfer between Sm3+ and Eu3+ is unidirectional and irreversible, implying that the energy transfer wastage between Sm3+ and Eu3+ is very low. Magnetic susceptibility (χ) measurements of LSEBx were carried out in the temperature range 2-320 K and are used to compare calculated and experimental energy levels. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Energy transfer | |
| dc.subject.en | Activator | |
| dc.subject.en | Sensitizer | |
| dc.subject.en | Concentration quenching | |
| dc.subject.en | Judd-Ofelt theory | |
| dc.title.en | Optical spectroscopy and magnetic behaviour of Sm3+ and Eu3+ cations in Li6Eu1-xSmx(BO3)3 solid solution | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.optmat.2017.09.026 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Optical Materials | |
| bordeaux.page | 658-665 | |
| bordeaux.volume | 73 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01640500 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01640500v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Optical%20Materials&rft.date=2017-11&rft.volume=73&rft.spage=658-665&rft.epage=658-665&rft.eissn=0925-3467&rft.issn=0925-3467&rft.au=BELHOUCIF,%20Rekia&VEL%C3%81ZQUEZ,%20Matias&PLANTEVIN,%20Olivier&ASCHEHOUG,%20Patrick&GOLDNER,%20Philippe&rft.genre=article |
Fichier(s) constituant ce document
| Fichiers | Taille | Format | Vue |
|---|---|---|---|
|
Il n'y a pas de fichiers associés à ce document. |
|||