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

Autor:	Fernanda Hediger Borges, Rogéria Rocha Gonçalves, Rute A. S. Ferreira, Silvana Ruella de Oliveira, Rafael Ramiro Pereira, Fábio José Caixeta
Rok vydání:	2020
Předmět:	ÍONS Photoluminescence Materials science business.industry General Chemical Engineering Analytical chemistry Quantum yield General Chemistry Orange (colour) law.invention Ion law Lattice (order) Crystallization Photonics business Solid solution
Zdroj:	Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP
ISSN:	2046-2069
DOI:	10.1039/d0ra01912g
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1dbac012efdf66fafe4d3d2ee4912139 https://doi.org/10.1039/d0ra01912g Zobrazit plný text záznamu