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Synthesis and Characterisation of SrAl2O4: Eu3+ Orange-Red Emitting Nanoparticles

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Abstract

The current study involves the synthesis and characterisation of europium doped strontium aluminate nanophosphors using the solid-state reaction method with varying concentrations of europium. The existence of the SrAl2O4 phase in all samples was verified using X-ray diffraction and FTIR analysis. The lattice parameters as well as phase fractions were determined using Rietveld refinement. Surface morphology was studied using field emission scanning electron microscope. Using the Tauc plot method acquired from the diffuse reflectance spectra, the band gaps of the samples were determined and it was found that the doped samples possess lower band gaps compared to the host. Our findings demonstrate that these nanophosphors exhibiting bright orange-red emission under UV excitation with quantum efficiency 70.68%, can be applied for display and fluorescence imaging.

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Data Availability

The datasets generated during and/or analyzed during the current study are not publicly available, but are available from the corresponding author on reasonable request.

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Funding

The authors acknowledge instrumentation support of CLIF, Kerala University. The authors declare that no other funds, grants were received during the preparation of this manuscript.

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Authors and Affiliations

  1. Department of Physics, Morning Star Home Science College, Angamaly, Kerala, 683573, India

    Neenu Mary Thomas

  2. Optoelectronic and Nanomaterials’ Research Lab, Department of Physics, Union Christian College, Aluva, Kerala, 683102, India

    Neenu Mary Thomas & E I Anila

  3. Center for Nano-Bio Polymer Science and Technology, Department of Physics, St. Thomas College, Palai, Kerala, 686574, India

    Neenu Mary Thomas

  4. Department of Physics and Electronics, Christ (Deemed to be University), Bangalore, Karnataka, 560029, India

    E I Anila

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All authors collectively contributed to the conception and design of the study. Anila E I and Neenu Mary Thomas were responsible for the conceptualization. Neenu Mary Thomas conducted the material preparation, data collection, and analysis. The initial draft of the manuscript was prepared by Neenu Mary Thomas, and E. I Anila provided valuable feedback, reviewed, and edited the manuscript. All authors have thoroughly read and approved the final version of the manuscript.

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Thomas, N.M., Anila, E.I. Synthesis and Characterisation of SrAl2O4: Eu3+ Orange-Red Emitting Nanoparticles. J Fluoresc 34, 1161–1169 (2024). https://doi.org/10.1007/s10895-023-03351-8

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