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Photoluminescence and energy transfer of Tm<sup>3+</sup> doped LiIn (WO<sub>4</sub>)<sub>2</sub> blue phosphors
| hal.structure.identifier | Laser Department [CRNA] | |
| dc.contributor.author | GUERBOUS, L. | |
| hal.structure.identifier | LASMEA | |
| dc.contributor.author | DERBAL, M. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHAMINADE, Jean-Pierre | |
| dc.date.issued | 2010 | |
| dc.identifier.issn | 0022-2313 | |
| dc.description.abstractEn | Room temperature steady and time resolved emission spectra of LiIn<sub>1−<i>x</i></sub>Tm<sub><i>x</i></sub>(WO4)2 (where thulium concentration is 0, 0.5, 1, 5 and 10 at%) blue phosphors, under UV excitation energy have been investigated. The concentration quenching effect on the blue emission, due to the (WO<sub>4</sub>)<sup>−2</sup> groups and <sup>1</sup>G<sub>4</sub>→<sup>3</sup>H<sub>6</sub> emission transition of Tm<sup>3+</sup> were studied. Two energy transfer mechanisms are shown. The first takes place between excited (WO<sub>4</sub>)<sup>−2</sup> groups and the <sup>1</sup>G<sub>4</sub> energy level of Tm<sup>3+</sup>, and is mainly analyzed by phonon-assisted energy transfer. The second mechanism is due to an energy transfer from the excited Tm<sup>3+</sup> ions to the surrounding ground state Tm<sup>3+</sup> ions. The non-exponential decay curves of the <sup>1</sup>G<sub>4</sub> level observed for higher concentrations are analyzed by the Inokuti–Hirayama model. We think that the quenching effect between Tm<sup>3+</sup> ions is mainly linked to the dipole–dipole interactions. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Tm3+ | |
| dc.subject.en | Double tungstate | |
| dc.subject.en | Photoluminescence | |
| dc.subject.en | Energy transfer | |
| dc.title.en | Photoluminescence and energy transfer of Tm<sup>3+</sup> doped LiIn (WO<sub>4</sub>)<sub>2</sub> blue phosphors | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jlumin.2010.08.014 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Luminescence | |
| bordeaux.page | 2469-2475 | |
| bordeaux.volume | 130 | |
| bordeaux.issue | 12 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00544299 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00544299v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Luminescence&rft.date=2010&rft.volume=130&rft.issue=12&rft.spage=2469-2475&rft.epage=2469-2475&rft.eissn=0022-2313&rft.issn=0022-2313&rft.au=GUERBOUS,%20L.&DERBAL,%20M.&CHAMINADE,%20Jean-Pierre&rft.genre=article |
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