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PREPARATION AND CHARACTERIZATION OF THE LUMINESCENT FILMS BASED OF YTTRIUM ALUMINUM OXIDES VIA SOL-GEL

Grant number: 12/20908-4
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2013
Effective date (End): February 28, 2015
Field of knowledge:Engineering - Chemical Engineering
Principal researcher:Eduardo José Nassar
Grantee:Camila Maria Alves Ferreira
Home Institution: Reitoria. Universidade de Franca (UNIFRAN). Franca , SP, Brazil

Abstract

Thin luminescent films have seen great technological advances and can be used to produce a variety of materials such as sensors, solar cells, photovoltaic devices, and optical magnetic readers and recorders.New methodologies for the synthesis of polycrystalline yttrium and aluminum in milder conditions have emerged, including the sol-gel process. The sol-gel methodology has been applied to the development of solid-state lasers containing organic dopants. Although this method uses mild temperatures, the facile decomposition of the organic dopants in the reaction medium has limited its use. To overcome this limitation, several works have focused on the non-hydrolytic sol-gel route, which enables the in situ preparation of the reagents and affords a more homogeneous product. In this work, we will use the non-hydrolytic sol-gel method to prepare inorganic matrixes consisting of mixed yttrium and aluminum oxides doped with europium(III) ions; the precursor solutions will generate films that will be deposited by the 'dip-coating' and 'spin-coating' techniques. We will characterize the resultingfilms by X-ray diffraction, scanning electron microscopy, electronic and vibrational spectroscopy, and europium(III) ions photoluminescence.

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Scientific publications
(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)
FERREIRA, CAMILA M. A.; FREIRIA, GABRIELA S.; DE FARIA, EMERSON H.; ROCHA, LUCAS A.; CIUFFI, KATIA J.; NASSAR, EDUARDO J. Yttrium aluminum garnet coating on glass substrate. Journal of Luminescence, v. 170, n. 2, SI, p. 686-691, FEB 2016. Web of Science Citations: 7.
PEREIRA, PAULA F. S.; MATOS, MARCELA G.; FERREIRA, CAMILA M. A.; DE FARIA, EMERSON H.; CALEFI, PAULO S.; ROCHA, LUCAS A.; CIUFFI, KATIA J.; NASSAR, EDUARDO J. Aluminate matrix doped with Tm3+/Tb3+/Eu3+ obtained by non-hydrolytic sol-gel route: White light emission. Journal of Luminescence, v. 146, p. 394-397, FEB 2014. Web of Science Citations: 16.

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