High Eu concentration quenching in YTaO solid solution for orange-reddish emission in photonics

We report the synthesis of a Y 3 TaO 7 solid solution containing a high Eu 3+ concentration (from 7 up to 50 mol%) and investigate how Eu 3+ influences the Y 3 TaO 7 crystallization process. To this end, we evaluate the Y 3 TaO 7 structural features and photoluminescence properties after Eu 3+ intro...

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Bibliographic Details
Published in:RSC advances 2020-04, Vol.1 (29), p.16917-16927
Main Authors: Borges, Fernanda Hediger, Caixeta, Fábio José, Pereira, Rafael Ramiro, Ruella de Oliveira, Silvana, Ferreira, Rute A. S, Gonçalves, Rogéria Rocha
Format: Article
Language:English
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Summary:We report the synthesis of a Y 3 TaO 7 solid solution containing a high Eu 3+ concentration (from 7 up to 50 mol%) and investigate how Eu 3+ influences the Y 3 TaO 7 crystallization process. To this end, we evaluate the Y 3 TaO 7 structural features and photoluminescence properties after Eu 3+ introduction into the Y 3 TaO 7 lattice. The higher the Eu 3+ ion concentration, the more stable the crystallization process of the Y 3 TaO 7 phase seems to be. The Eu 3+ -containing Y 3 TaO 7 displays intense orange-reddish, broad band emission because Eu 3+ occupies different symmetry sites in the host and causes inhomogeneous broadening. Eu 3+ emission quenching due to Eu 3+ concentration is negligible up to 30 mol% and absolute quantum yield values of up to nearly 30% were obtained, making Eu 3+ -containing Y 3 TaO 7 interesting materials for application as high-intensity emitters in photonics. Eu 3+ ions influence on the crystallization process of Y 3 TaO 7 solid solution and this particular host has presented a high concentration quenching (30 mol%), displaying an intense orange-reddish emission, with color purity over 92.6%.
ISSN:2046-2069
DOI:10.1039/d0ra01912g