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Effect of CdS nanocrystals on the photoluminescence of Eu3+-doped silicophosphate sol gel glass

Abstract :

In this work, we investigate the effect of co-doping with CdS nanoparticles on the photoluminescence properties of Eu3+ doped silicophosphate glass prepared via the sol gel method. Infrared spectroscopy (FTIR) revealed the insertion of phosphorus within the silicate network. XRD and TEM analyses revealed the presence of CdS nanoparticles dispersed in the glass matrix. Based on the optical study and the effective mass theory for spherical quantum dots, it was found that CdS nanocrystals have a gap of nearly 3.53 eV and a size of 2.42 nm. The enhancement of Eu3+ emission induced by CdS nanocrystals and thermal annealing was assigned to either an energy transfer via defect states or structural alteration of the glass network around the rare earth ions.

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https://hal.univ-angers.fr/hal-02572703
Contributeur : Okina Université d'Angers <>
Soumis le : mercredi 13 mai 2020 - 18:15:49
Dernière modification le : mercredi 14 octobre 2020 - 04:17:04

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F. Ben Slimen, Z. Zaaboub, M. Haouari, Naim Bel Haj Mohamed, H. Ben Ouada, et al.. Effect of CdS nanocrystals on the photoluminescence of Eu3+-doped silicophosphate sol gel glass. RSC Advances, Royal Society of Chemistry, 2017, 7 (24), pp.14552-14561. ⟨10.1039/c7ra01313b⟩. ⟨hal-02572703⟩

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