Abstract
A facile sol–gel combustion route was reported for the direct preparation of CaZrO3:Eu3+ and CaZrO3:Eu3+, Gd3+. The obtained deposits were characterized by XRD, TGA-DSC, SEM, EDS, PL measurements and microscope fluorescence. When the Gd3+ ions were introduced in this compound, the emissions of CaZrO3:Eu3+were remarkably enhanced. The emission spectrum of CaZrO3:Eu3+, Gd3+ nanocrystals exhibited a red shift compared with CaZrO3:Eu3+ samples. A new mechanism of the improved photoluminescent properties of Eu3+ by Gd3+ was investigated. The optimized phosphor CaZrO3:5%Eu3+, 2%Gd3+ could be considered an efficient red-emitting component for white lighting devices excited in the near-ultraviolet region.
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Acknowledgements
This work was supported by projects from The Chinese PLA Medical Science and Technique Foundation (CWS11J243) and The Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, P R China.
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DU, Q., ZHOU, G., ZHANG, S. et al. Facile combustion synthesis of novel CaZrO3:Eu3+, Gd3+ red phosphor and remarkably enhanced photoluminescence by Gd3+ doping. Bull Mater Sci 38, 215–220 (2015). https://doi.org/10.1007/s12034-014-0787-6
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DOI: https://doi.org/10.1007/s12034-014-0787-6