Advanced search
Start date
Betweenand

Rare earth doped micro and nanostructures luminescent materials: properties and applications

Abstract

This project focuses specifically on the synthesis and spectroscopic study of micro-and / or nanostructured rare-earth doped inorganic materials with efficient near-infrared (NIR) and visible emission for applications in photonics, biophotonics and as efficient energy converters. Morphological and structural control of oxides and their correlation with optical and luminescent properties represent the academic basis of this project. Inorganic materials will be prepared in the form of particulate powders and / or films targeting three different applications which underlie the project's technological and innovation base: optical amplifiers for telecommunication systems, optical markers (biomarkers) and energy converters to Solar cell efficiency increase.A study of the structural, optical and spectroscopic properties of silicon-derived nanocomposite films prepared by sol-gel for photonic application as optical amplifiers, specifically in the area of telecommunications, will be carried out. The project aims to develop materials with broadband emission in the NIR region. Systems based on 1-xSiO2-xTa2O5 and 1-xSiO2-xNb2O5 will be studied, focusing especially the optical and spectroscopic properties as a function of the composition and concentration of the rare earth dopant ion (Er3+ / Yb3+ / Tm3+ / Nd3+ / Pr3+). The co-doping nanocomposite systems will be performed aiming the study of energy transfer processes and their mechanisms dynamics will be studied in order to obtain materials with efficient NIR emission (broad band). It will also explore systems containing GeO2, aiming greater transparency of the matrix in the NIR and exploitation of photosensitive properties which will enable the microstructure fabrication in films.Studies on the upconversion dynamics of rare earth doped (Er3+, Yb3+, Tm3+) nanostructured low-phonon energy oxides systems, as N2O5, will be continued, aiming the optimization of luminescent properties with potential application as optical markers and as efficient energy converters.A third focus of this project is the conversion of energy involving downshifting and downconversion, especially Eu3+ doped systems and codoped Tb3+/ Yb3+ and Pr3+/ Yb3+, to obtain materials with emission in 1.0 ¼m to increase the efficiency of commercial Si-based solar cells.The correlation between optical and structural properties will be performed according to the composition, synthesis method, as well as the concentration of Ln3+ ions (Ln3+ = Er3+, Tm3+, Yb3+, Nd3+, Pr3+). (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
Articles published in other media outlets (0 total):
More itemsLess items
VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Scientific publications (9)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
LIMA, KARMEL DE OLIVEIRA; DOS SANTOS, LUIZ FERNANDO; DE MELO, MARYANNE TRAFANI; TEDESCO, ANTONIO CLAUDIO; GONCALVES, ROGERIA ROCHA; GREDIN, PATRICK; MORTIER, MICHEL. Highly colloidal luminescent Er3+, Yb3+-codoped KY3F10 nanoparticles for theranostic applications. MATERIALS TODAY COMMUNICATIONS, v. 28, . (18/18213-4, 20/05319-9, 17/11301-2)
MARCONDES, LIA MARA; DA CUNHA, CRISTIANO RAMOS; DE PIETRO, GABRIELE MATINATTI; MANZANI, DANILO; GONCALVES, ROGERIA ROCHA; BATISTA, GISLENE; CASSANJES, FABIA CASTRO; POIRIER, GAEL. Multicolor tunable and NIR broadband emission from rare-earth-codoped tantalum germanate glasses and nanostructured glass-ceramics. Journal of Luminescence, v. 239, . (20/01786-1, 17/11301-2, 18/16126-7, 13/07793-6, 20/05319-9)
BORGES, FERNANDA HEDIGER; MARTINS, JOANA COSTA; CAIXETA, FABIO JOSE; PEREIRA, RAFAEL RAMIRO; CARLOS, LUIS DIAS; FERREIRA, RUTE A. S.; GONCALVES, ROGERIA ROCHA. Primary thermometers based on sol-gel upconverting Er3+/Yb3+ co-doped yttrium tantalates with high upconversion quantum yield and emission color tunability. Journal of Sol-Gel Science and Technology, . (17/10424-3, 18/04587-0, 17/11301-2)
LIMA, KARMEL DE OLIVEIRA; DOS SANTOS, LUIZ FERNANDO; GALVAO, RODRIGO; TEDESCO, ANTONIO CLAUDIO; MENEZES, LEONARDO DE SOUZA; GONCALVES, ROGERIA ROCHA. Single Er3+, Yb3+: KGd3F10 Nanoparticles for Nanothermometry. FRONTIERS IN CHEMISTRY, v. 9, . (20/05319-9, 17/11301-2, 17/10440-9, 18/18213-4)
BORGES, FERNANDA HEDIGER; CAIXETA, FABIO JOSE; PEREIRA, RAFAEL RAMIRO; DE OLIVEIRA, SILVANA RUELLA; FERREIRA, RUTE A. S.; GONCALVES, ROGERIA ROCHA. High Eu3+ concentration quenching in Y3TaO7 solid solution for orange-reddish emission in photonics. RSC ADVANCES, v. 10, n. 29, p. 16917-16927, . (18/04587-0, 17/11301-2, 17/10424-3)
BORGES, FERNANDA HEDIGER; CAIXETA, FABIO JOSE; PEREIRA, RAFAEL RAMIRO; DE OLIVEIRA, SILVANA RUELLA; GONCALVES, ROGERIA ROCHA. Yttrium tantalate containing high concentrations of Eu3+ as dopant: Synthesis and structural and luminescence features. Journal of Luminescence, v. 199, p. 143-153, . (17/10424-3, 17/11301-2)
MUSCELLI, WESLEY CARDOSO; AQUINO, FELIPE THOMAZ; CAIXETA, FABIO JOSE; RODRIGUES NUNES, LUCAS RAFAEL; ZUR, LIDIA; FERRARI, MAURIZIO; GONCALVES, ROGERIA ROCHA. Yb3+ concentration influences UV-Vis to NIR energy conversion in nanostructured Pr3+ and Yb3+ co-doped SiO2-Nb2O5 materials for photonics. Journal of Luminescence, v. 199, p. 454-460, . (17/11301-2)
DA CUNHA, CRISTIANO RAMOS; MARCONDES, LIA MARA; BATISTA, GISLENE; GONCALVES, ROGERIA ROCHA; CASSANJES, FABIA CASTRO; POIRIER, GAEL YVES. rystallization of bronze-like perovskite in potassium tantalum germanate glasses: Glass ceramic preparation and its optical propertie. Optical Materials, v. 122, n. B, . (20/01786-1, 17/11301-2, 20/05319-9)
CAIXETA, FABIO JOSE; AQUINO, FELIPE THOMAZ; PEREIRA, RAFAEL RAMIRO; GONCALVES, ROGERIA ROCHA. Highly red luminescent Nb2O5:Eu3+ nanoparticles in silicate host for solid-state lighting and energy conversion. Optical Materials, v. 111, . (20/05319-9, 17/10423-7, 17/11301-2)

Please report errors in scientific publications list by writing to: cdi@fapesp.br.