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Studies on organic-mediated synthesis of Y2O3:Eu3+ nanophosphors and its temperature-dependent photoluminescence properties

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Abstract

In this work, thermally stable Y2O3:Eu3+ nanophosphors were synthesized through the organic-mediated combustion technique using dilute citric acid/citric acid mixed with diethylene glycol as fuel. The structural analysis establishes that these oxides crystallize into the body-centred cubic structure with a space group la3. The nanophosphor prepared by citric acid with diethylene glycol as fuel exhibits better surface morphology and enhanced photoemission. The addition of polymeric precursors greatly enhanced the photoluminescence intensity of Y2O3:Eu phosphor by reducing the surface defects via morphological control and improvement of crystallite growth. Investigations on temperature-dependent photoluminescence studies reveal that the nanaophosphors are thermally stable, and the respective activation energies were 0.130 and 0.143 eV. The nanophosphor, fueled with diethylene glycol, exhibits remarkable CIE chromaticity coordinates (0.655, 0.345), in agreement with the National Television System Committee standards, and good CCT values with high colour purity (96.48%), making them potential red phosphor in the fabrication of white light-emitting diodes.

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Acknowledgements

We acknowledge the Central Laboratory for Instrumentation and Facilitation (CLIF), University of Kerala, for the characterization of the samples. We would like to acknowledge Department of Optoelectronics, University of Kerala, for the research facilities. T S Sreena acknowledges the financial support from the Council of Scientific and Industrial Research (CSIR), New Delhi, Government of India, under the CSIR-Research Associateship scheme.

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Correspondence to K G Gopchandran.

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Abhila, S.R., Lalan, V., Sreena, T.S. et al. Studies on organic-mediated synthesis of Y2O3:Eu3+ nanophosphors and its temperature-dependent photoluminescence properties. Bull Mater Sci 46, 127 (2023). https://doi.org/10.1007/s12034-023-02970-y

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  • DOI: https://doi.org/10.1007/s12034-023-02970-y

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