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Photophysical properties of Eu3+ and Tb3+-doped ZnAl2O4 phosphors obtained by combustion reaction

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Abstract

Europium- and terbium-doped zinc aluminate oxide nanocrystals with a spinel structure were successfully prepared by a combustion method, using urea as fuel. The samples thus obtained were characterized by X-ray diffraction, scanning electron microscopy and luminescence spectroscopy. X-ray diffraction results confirmed the formation of ZnAl2O4 spinel phase and a minor amount of ZnO. Our SEM results revealed agglomerates in the shape of irregular plates composed of nanoparticles with dispersed points of second phase in the surface. Powders containing Eu3+ and Tb3+ ions displayed red and green photoluminescence, respectively.

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Acknowledgements

The authors would like to thank the Brazilian institutions CAPES and RENAMI-CNPq for their financial support of this research.

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Authors and Affiliations

  1. Department of Materials Engineering, Federal University of Campina Grande, Campina Grande, PB, Brazil

    B. S. Barros, P. S. Melo & A. C. F. M. Costa

  2. Rare Earth Laboratory – BSTR, Department of Fundamental Chemistry, Federal University of Pernambuco, Recife, PE, Brazil

    G. F. de Sá & S. Alves Jr

  3. Department of Materials Engineering, Federal University of São Carlos, São Carlos, SP, Brazil

    R. H. G. A. Kiminami

Authors
  1. B. S. Barros
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  2. P. S. Melo
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  3. R. H. G. A. Kiminami
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  4. A. C. F. M. Costa
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  5. G. F. de Sá
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  6. S. Alves Jr
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Correspondence to R. H. G. A. Kiminami.

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Barros, B.S., Melo, P.S., Kiminami, R.H.G.A. et al. Photophysical properties of Eu3+ and Tb3+-doped ZnAl2O4 phosphors obtained by combustion reaction. J Mater Sci 41, 4744–4748 (2006). https://doi.org/10.1007/s10853-006-0035-6

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  • DOI: https://doi.org/10.1007/s10853-006-0035-6

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