Zobrazeno 1 - 4
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pro vyhledávání: '"Fábio José Caixeta"'
Autor:
Fernanda Hediger Borges, Rogéria Rocha Gonçalves, Rute A. S. Ferreira, Silvana Ruella de Oliveira, Rafael Ramiro Pereira, Fábio José Caixeta
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
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 photolu
Publikováno v:
Journal of Luminescence. 188:295-300
This study reports on how the niobium content influences the infrared-to-visible upconversion (UC) in Er 3+ /Yb 3+ co-doped SiO 2 -Nb 2 O 5 nanocomposites produced by an alternative sol-gel route. Raman spectroscopy, Transmission electron microscopy
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
A high intrinsic quantum yield and color purity red-emitting nanostructured Eu3+-doped 1-xSiO2-xNb2O5 materials were prepared by a new sol-gel route at different Si:Nb molar ratio for solid-state lighting and energy conversion. It was evaluated how t
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
A new sol–gel route was used for obtaining Er 3+ /Yb 3+ co-doped Nb 2 O 5 nanoparticles distributed in a SiO 2 based host. Phase separation and crystallization process were investigated for Er 3+ /Yb 3+ co-doped nanocomposites at 70Si:30Nb molar ra