Luminescent behavior of Eu3+ doped BaHfO3 perovskite ceramic under UV radiation

In this paper, luminescent properties of Europium trivalent ion in the matrix with unbalanced charge of barium hafnate under UV radiation, with special emphasis on the 5D0 → 7F0 transition are reported. The synthesis was conducted by the hydrothermal route at 200 °C with a reaction time of 90 min us...

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Bibliographic Details
Published in:Applied radiation and isotopes 2019-11, Vol.153, p.108815-108815, Article 108815
Main Authors: Guzmán-Olguín, J.C., Esquivel, R.I. López, Torres Jasso, G., Guzmán-Mendoza, J., Rivera Montalvo, T., García-Hipólito, M., Falcony, C.
Format: Article
Language:English
Subjects:
Barium hafnate
Europium
Hydrothermal
Luminescence
Perovskite
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Summary:In this paper, luminescent properties of Europium trivalent ion in the matrix with unbalanced charge of barium hafnate under UV radiation, with special emphasis on the 5D0 → 7F0 transition are reported. The synthesis was conducted by the hydrothermal route at 200 °C with a reaction time of 90 min using chlorides as raw materials. In order to determinate the luminescent quenching concentration, the samples were doped with different amounts of Europium trivalent ions being the sample doped with 1 and 3% at of Eu3+ which shows the highest luminescent emission. X-ray diffraction analysis showed that the material crystallize in the cubic perovskite structure with space group Pm-3m. The Energy Dispersive Spectroscopy (EDS) shows there are not elements other those that Ba, Hf, O and Eu in the synthesized material. Photoluminescent emission spectra show peaks of emission associated with the 5D0 → 7FJ (J = 0,1,2,3,4) transitions, characteristics of europium ion. The 5D0 → 7F0 transition centered at 580 nm showed an unusual great intensity when it was excited with the wavelength associated with the charge transfer band (272 nm). Finally the decay time was measured in the 5D0 → 7FJ (J = 0,1,2,3,4) transitions using the sample doped with Eu3+ (3% at). •Powders of Eu doped BaHfO3 were synthesized.•Effect of Eu dopant concentration was studied.•UV radiation effect in BaHfO3:Eu was discussed.•Decay time of 5D0 .→ 7F0 transition was measured
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2019.108815