CASTRO, Tarcio; JUBERA, Veronique; FARES, Hssen; PETIT, Yannick; FARGUES, Alexandre; CARDINAL, Thierry; NALIN, Marcelo; RIBEIRO, Sidney

doi:10.1007/s10854-019-01530-7

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CASTRO, Tarcio
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]

JUBERA, Veronique
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

FARES, Hssen
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Universidade Estadual Paulista Júlio de Mesquita Filho = São Paulo State University [UNESP]

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Article de revue

Ce document a été publié dans

Journal of Materials Science: Materials in Electronics. 2019, vol. 30, n° 18, p. 16878–16885

Springer Verlag

Résumé en anglais

Here, we report the luminescence properties of Yb3+/Pr3+ dual-doped fluorophosphate glasses containing silver clusters. Through the solubility of silver into the glass system as function of its initial concentration, charged species characterized as Ag+ and Ag m n+ were formed and identified according to their absorption and emission spectral responses. By changing the transition metal concentration, multi-energy transfer mechanisms were observed between silver and Yb3+/Pr3+ co-doped glasses. The stabilization of silver species seems to be detrimental to the radiative processes of the rare earth ions under excitation at 444 nm (Pr3+3H4 → 3P0 absorption line). In other words, the main visible emissions of Pr3+ and the NIR emission of Yb3+ decrease with increment of Ag concentration. However, energy transfer occurs for large spectral range by the excitation of the silver species. In consequence, the visible and NIR emission could be activate in a broadband from ultraviolet to the blue part of the spectral region. These two observations highlight the competitive absorption processes and probabilities between the cationic elements and the interest to use the transition metal species as sensitizers to excite the rare earth elements.< Réduire

DOI

http://dx.doi.org/10.1007/s10854-019-01530-7

Project ANR

Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026