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Micromachines 2018, 9(9), 441;

Luminescent Properties of Eu3+-Doped Hybrid SiO2-PMMA Material for Photonic Applications

Facultad de Ciencias Físico Matemáticas, Benemérita Universidad Autónoma de Puebla, Avenida San Claudio y 18 Sur, Colonia San Manuel, Ciudad Universitaria, C.P. 72570 Puebla, Mexico
Departamento de Investigación en Física, Universidad de Sonora, Apartado Postal 5-088, C.P. 83190 Hermosillo, Sonora, Mexico
Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, P.O. Box 1067, Colonia San Manuel, Ciudad Universitaria, C.P. 72570 Puebla, Mexico
Author to whom correspondence should be addressed.
Received: 19 May 2018 / Revised: 17 July 2018 / Accepted: 19 July 2018 / Published: 1 September 2018
(This article belongs to the Special Issue Glassy Materials Based Microdevices)
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Hybrid organic-inorganic materials are of great interest for various applications. Here, we report on the synthesis and optical characterization of silica-PMMA samples with different Eu3+ molar concentrations. The optical properties of this material make it suitable for photonic applications. The samples were prepared using the sol-gel method, mixing tetraethyl orthosilicate (TEOS) as a silica glass precursor and methyl methacrylate (PMMA) as a polymer component. Europium nitrate pentahydrate was then added in six different molar concentrations (0.0, 0.1, 0.25, 0.5, 0.75, and 1%) to obtain as many different samples of the material. The absorption spectra were obtained applying the Kubelka–Munk formula to the diffuse reflectance spectra of the samples, all in the wavelength range between 240 and 2500 nm. The emission and excitation measurements were made in the visible range. Five bands could be identified in the emission spectra, related to electronic transitions of the ion Eu3+ (4D07Fi, i from 0 to 4). In the excitation spectra, the following bands were detected: 7F05G3 (379 nm), 7F05G2 (380 nm), 7F05L6 (392 nm), 7F05D3 (407 nm), 7F05D2 (462 nm), and 7F05D1 (530 nm). The emission decay times were measured for the different samples and showed an inverse dependence with the Eu3+ concentration. View Full-Text
Keywords: europium; luminescence; hybrid materials; microdevices europium; luminescence; hybrid materials; microdevices

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Trejo-García, P.M.; Palomino-Merino, R.; De la Cruz, J.; Espinosa, J.E.; Aceves, R.; Moreno-Barbosa, E.; Moreno, O.P. Luminescent Properties of Eu3+-Doped Hybrid SiO2-PMMA Material for Photonic Applications. Micromachines 2018, 9, 441.

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