Search Results - "Pereira, Rafael Ramiro"

High Eu3+ concentration quenching in Y3TaO7 solid solution for orange-reddish emission in photonics by Fernanda Hediger Borges, Caixeta, Fábio José, Rafael Ramiro Pereira, Silvana Ruella de Oliveira, Ferreira, Rute A S, Rogéria Rocha Gonçalves

“…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…”
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Nanostructured rare earth doped Nb2O5: Structural, optical properties and their correlation with photonic applications by Pereira, Rafael Ramiro, Aquino, Felipe Thomaz, Ferrier, Alban, Goldner, Philippe, Gonçalves, Rogéria R.

“…In the present work, we report on a systematic study on structural and spectroscopic properties Eu3+ and Er3+-doped Nb2O5 prepared by sol–gel method. The Eu3+…”
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Highly red luminescent Nb2O5:Eu3+ nanoparticles in silicate host for solid-state lighting and energy conversion by Caixeta, Fábio José, Aquino, Felipe Thomaz, Pereira, Rafael Ramiro, Gonçalves, Rogéria Rocha

“…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…”
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Yttrium tantalate containing high concentrations of Eu3+ as dopant: Synthesis and structural and luminescence features by Borges, Fernanda Hediger, Caixeta, Fábio José, Pereira, Rafael Ramiro, de Oliveira, Silvana Ruella, Gonçalves, Rogéria Rocha

“…This study reports the synthesis and the structural and spectroscopic characterization of Eu3+-doped yttrium tantalate prepared by a new sol–gel method, which…”
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Primary thermometers based on sol–gel upconverting Er3+/Yb3+ co-doped yttrium tantalates with high upconversion quantum yield and emission color tunability by Borges, Fernanda Hediger, Martins, Joana Costa, Caixeta, Fábio José, Pereira, Rafael Ramiro, Carlos, Luis Dias, Ferreira, Rute A. S., Gonçalves, Rogéria Rocha

“…This study investigates how rare earth ion (RE 3+ ) concentration affects stabilization of the crystalline structure and infrared-to-visible upconversion (UC)…”
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Broad and intense NIR luminescence from rare earth doped SiO2–Nb2O5 glass and glass ceramic prepared by a new sol gel route by Caixeta, Fábio José, Aquino, Felipe Thomaz, Pereira, Rafael Ramiro, Gonçalves, Rogéria Rocha

“…A new sol–gel route was used for obtaining Er3+/Yb3+ co-doped Nb2O5 nanoparticles distributed in a SiO2 based host. Phase separation and crystallization…”
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High Eu 3+ concentration quenching in Y 3 TaO 7 solid solution for orange-reddish emission in photonics by Borges, Fernanda Hediger, Caixeta, Fábio José, Pereira, Rafael Ramiro, Ruella de Oliveira, Silvana, Ferreira, Rute A S, Gonçalves, Rogéria Rocha

“…We report the synthesis of a Y TaO solid solution containing a high Eu concentration (from 7 up to 50 mol%) and investigate how Eu influences the Y TaO…”
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Niobium oxide influence on the structural properties and NIR luminescence of Er3+/Yb3+ co-doped and single-doped 1−xSiO2−xNb2O5 nanocomposites prepared by an alternative sol–gel route by Caixeta, Fábio José, Aquino, Felipe Thomaz, Pereira, Rafael Ramiro, Gonçalves, Rogéria Rocha

“…We have investigated how the Nb content influences the structural and luminescence properties of Er3+/Yb3+ co-doped SiO2–Nb2O5 nanocomposites prepared by an…”
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Nanostructured rare earth doped Nb 2 O 5 : Structural, optical properties and their correlation with photonic applications by Pereira, Rafael Ramiro, Aquino, Felipe Thomaz, Ferrier, Alban, Goldner, Philippe, Gonçalves, Rogéria R.

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High Eu concentration quenching in YTaO solid solution for orange-reddish emission in photonics by Borges, Fernanda Hediger, Caixeta, Fábio José, Pereira, Rafael Ramiro, Ruella de Oliveira, Silvana, Ferreira, Rute A. S, Gonçalves, Rogéria Rocha

“…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…”
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