Advanced search
Start date
Betweenand
(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

Full text
Author(s):
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
Affiliation:
[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
Abstract

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