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Journal of Research in Physics

The Journal of University of Novi Sad

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2217-933X
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Analysis of luminescence of Eu3+ doped Lu2Ti2O7 powders with Judd-Ofelt theory

Katarina Vuković / Sanja Ćulubrk / Milica Sekulić / Miroslav D. Dramićanin
Published Online: 2016-06-16 | DOI: https://doi.org/10.1515/jrp-2015-0003

Abstract

Eu3+ doped Lu2Ti2O7 particles of 6 to 10 nm in diameter are prepared by Pechini-type polymerized complex route based on polyesterification between citric acid (CA) and ethylene glycol. X-ray diffraction measurements confirmed that Eu3+ doped Lu2Ti2O7 powders crystallized in the face-centered cubic lattice (Fd3m). Emission spectra displayed characteristic 5D07 FJ (J = 0, 1, 2, 3 and 4) spin forbidden f-f electronic transitions of the Eu3+ ions with the most pronounced emission coming from 5D07 F2 and with the emission decays varying between 0.75 and 0.60 ms for samples doped with different concentration of Eu3+. The Judd-Ofelt theory was applied to the experimental data for the quantitative determination of optical parameters such as Ω2, Ω4 Judd-Ofelt parameters, radiative and nonradiative transition rates and emission quantum efficiency. It was observed that, for all the samples, Ω2 >> Ω4. The luminescence quantum yields were calculated by means of the Judd-Ofelt theory and the highest value 60.83 % is obtained for particles doped with concentration of 3 % Eu3+.

Keywords: Judd-Ofelt analyses; Eu3+; luminescence; lanthanides

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About the article

Received: 2015-10-26

Published Online: 2016-06-16

Published in Print: 2015-12-01


Citation Information: Journal of Research in Physics, ISSN (Online) 2217-933X, DOI: https://doi.org/10.1515/jrp-2015-0003.

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© 2014 Katarina Vuković et al., published by De Gruyter Open. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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