Luminescent Nd3+, Cr3+ codoped YAG nanocrystals for thermal sensing: Influence of the excitation wavelength - Archive ouverte HAL Access content directly
Journal Articles Physica B: Condensed Matter Year : 2021

Luminescent Nd3+, Cr3+ codoped YAG nanocrystals for thermal sensing: Influence of the excitation wavelength

Geraldine Dantelle
Alain Ibanez
Gilles Ledoux
Christophe Dujardin

Abstract

Al 5 O 12 (YAG) nanocrystals codoped with Nd 3+ and Cr 3+ ions have been produced by a modified solvothermal method. The incorporation of both Nd 3+ and Cr 3+ inside the YAG network has been attested by X-ray diffraction and photoluminescence measurements. Modification of the excitation wavelength leads to ratiometric intensity changes between the luminescence attributed to Nd 3+ and that of Cr 3+. Temperature-dependent luminescence spectra have been analyzed according to the different excitation wavelengths. The highest relative thermal intensity (S r = 2.5%.K − 1) is obtained under a 532 nm excitation, which favors the direct and independent excitation of Cr 3+ and Nd 3+ .
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hal-03541503 , version 1 (08-01-2024)

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Geraldine Dantelle, Valérie Reita, Alain Ibanez, Gilles Ledoux, Christophe Dujardin. Luminescent Nd3+, Cr3+ codoped YAG nanocrystals for thermal sensing: Influence of the excitation wavelength. Physica B: Condensed Matter, 2021, 628, pp.413622. ⟨10.1016/j.physb.2021.413622⟩. ⟨hal-03541503⟩
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