Revised crystal structure and luminescent properties of gadolinium oxyfluoride Gd4O3F6 doped with Eu3+ ions

Tomasz Grzyb; Rafal J. Wiglusz; Vitali Nagirnyi; Aleksei Kotlov; Stefan Lis

doi:10.1039/C4DT00338A

Revised crystal structure and luminescent properties of gadolinium oxyfluoride Gd₄O₃F₆ doped with Eu³⁺ ions†

Tomasz Grzyb,*^a Rafal J. Wiglusz,*^b Vitali Nagirnyi,^c Aleksei Kotlov^d and Stefan Lis^a

* Corresponding authors

^a Department of Rare Earth, Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland
E-mail: tgrzyb@amu.edu.pl

^b Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wroclaw, Poland
E-mail: R.Wiglusz@int.pan.wroc.pl

^c Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia

^d Photon Science Division at DESY, Gebaude 25b/309 Notkestr. 85, D-22607 Hamburg, Germany

Abstract

The structure of gadolinium oxyfluoride nanoparticles was revised. Extensive studies including X-ray diffraction and Rietveld refinement as well as Fourier transform infrared spectroscopy and Raman spectroscopy confirmed the monoclinic P12/c1 crystal structure of Gd₄O₃F₆. Morphological analysis using transmission electron microscopy showed the nanocrystallinity of the materials prepared via the sol–gel Pechini's method. The luminescent properties of the prepared materials with different concentrations of Eu³⁺ ions were characterized by emission spectroscopy. The phosphors obtained were investigated in the vacuum ultraviolet range using synchrotron radiation. The Judd–Ofelt parameters (Ω₂, Ω₄) and emission efficiencies η were calculated and are discussed in detail.

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Article information

DOI: https://doi.org/10.1039/C4DT00338A
Article type: Paper
Submitted: 31 Jan 2014
Accepted: 04 Mar 2014
First published: 04 Mar 2014
This article is Open Access

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Dalton Trans., 2014,43, 6925-6934

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Revised crystal structure and luminescent properties of gadolinium oxyfluoride Gd₄O₃F₆ doped with Eu³⁺ ions

T. Grzyb, R. J. Wiglusz, V. Nagirnyi, A. Kotlov and S. Lis, Dalton Trans., 2014, 43, 6925 DOI: 10.1039/C4DT00338A

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Dalton Transactions