High Eu 3+ concentration quenching in Y 3 TaO 7 solid solution for orange-reddish emission in photonics.

Autor: Borges FH; Laboratório de Materiais Luminescentes Micro e Nanoestruturados - Mater Lumen, Departamento de Química, FFCLRP, Universidade de São Paulo SP Brazil rrgoncalves@ffclrp.usp.br., Caixeta FJ; Laboratório de Materiais Luminescentes Micro e Nanoestruturados - Mater Lumen, Departamento de Química, FFCLRP, Universidade de São Paulo SP Brazil rrgoncalves@ffclrp.usp.br., Pereira RR; Laboratório de Materiais Luminescentes Micro e Nanoestruturados - Mater Lumen, Departamento de Química, FFCLRP, Universidade de São Paulo SP Brazil rrgoncalves@ffclrp.usp.br., Ruella de Oliveira S; Laboratório de Materiais Luminescentes Micro e Nanoestruturados - Mater Lumen, Departamento de Química, FFCLRP, Universidade de São Paulo SP Brazil rrgoncalves@ffclrp.usp.br., Ferreira RAS; Phantom-G, CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro Aveiro Portugal., Gonçalves RR; Laboratório de Materiais Luminescentes Micro e Nanoestruturados - Mater Lumen, Departamento de Química, FFCLRP, Universidade de São Paulo SP Brazil rrgoncalves@ffclrp.usp.br.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2020 Apr 30; Vol. 10 (29), pp. 16917-16927. Date of Electronic Publication: 2020 Apr 30 (Print Publication: 2020).
DOI: 10.1039/d0ra01912g
Abstrakt: 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.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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