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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

High Eu3+ concentration quenching in Y3TaO7 solid solution for orange-reddish emission in photonics

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Borges, Fernanda Hediger [1] ; Caixeta, Fabio Jose [1] ; Pereira, Rafael Ramiro [1] ; de Oliveira, Silvana Ruella [1] ; Ferreira, Rute A. S. [2] ; Goncalves, Rogeria Rocha [1]
Total Authors: 6
[1] Univ Sao Paulo, Dept Quim, Lab Mat Luminescentes Micro & Nanoestruturados Ma, Sao Paulo, SP - Brazil
[2] Univ Aveiro, CICECO Aveiro Inst Mat, Dept Phys, Phantam G, Aveiro - Portugal
Total Affiliations: 2
Document type: Journal article
Source: RSC ADVANCES; v. 10, n. 29, p. 16917-16927, MAY 4 2020.
Web of Science Citations: 0

We report the synthesis of a Y3TaO7 solid solution containing a high Eu3+ concentration (from 7 up to 50 mol%) and investigate how Eu3+ influences the Y3TaO7 crystallization process. To this end, we evaluate the Y3TaO7 structural features and photoluminescence properties after Eu3+ introduction into the Y3TaO7 lattice. The higher the Eu3+ ion concentration, the more stable the crystallization process of the Y3TaO7 phase seems to be. The Eu3+-containing Y3TaO7 displays intense orange-reddish, broad band emission because Eu3+ occupies different symmetry sites in the host and causes inhomogeneous broadening. Eu3+ emission quenching due to Eu3+ concentration is negligible up to 30 mol% and absolute quantum yield values of up to nearly 30% were obtained, making Eu3+-containing Y3TaO7 interesting materials for application as high-intensity emitters in photonics. (AU)

FAPESP's process: 18/04587-0 - Yttrium Tantalates and niobates rare earth ions doped with emission in the Visible and Near Infrared region for photonics applications
Grantee:Fernanda Hediger Borges Ribeiro
Support type: Scholarships abroad - Research Internship - Master's degree
FAPESP's process: 17/11301-2 - Rare earth doped micro and nanostructures luminescent materials: properties and applications
Grantee:Rogéria Rocha Gonçalves
Support type: Regular Research Grants
FAPESP's process: 17/10424-3 - Luminescent rare earth tantalate and niobate: synthesis, properties and applications in photonics
Grantee:Fernanda Hediger Borges Ribeiro
Support type: Scholarships in Brazil - Master