Abstract
The luminescence and chromaticity characteristics of Na5Y(WO4)4: Eu3+, a type of red-emitting phosphors, are examined. To make Na5Y(WO4)4: Eu3+ phosphor, a conventional solid-state reaction technique has been employed. The photoluminescence emission(PL) and photoluminescence excitation(PLE) spectra indicate that the absorption of light is mostly due to W → O charge transfer at 319 nm wavelength and Eu3+ transitions are obtained in the near-UV and visible areas, whereas red emissions are due to intra-configurational 4f-4f Eu3+ transitions. The CIE chromaticity coordinates for Na5Y(WO4)4: Eu3+ are (0.68, 0.31), which is the same as the commodity phosphor Y2O2S:Eu3+. Characteristic line emission is seen, with the strongest emission at 619 nm. The intensity of the luminescence is constrained by Eu3+ concentration due to energy transfer. Furthermore, Na5Y(WO4)4: Eu3+ phosphors are interesting prospects for w-LEDs.
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Acknowledgements
Crystal structure showing presence of all elements of compound are prepared using open-source Vesta software [31]. We are obliged to the copyright owners of the vesta software for permitting free of cost use. Assistance in obtaining XRD pattern provided by Shri Shivaji Science College, Amaravati, India is gratefully acknowledged.
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AP—Data collection, Writing-Original draft, Investigation, Visualization. Dr. NU—Conceptualization, editing, analysis and discussion. Dr. AM—Conceptualization, editing, analysis and discussion. Dr. CG—Conceptualization, editing, analysis and discussion. Prof. SM—Conceptualization, editing, analysis and discussion. All authors have directly participated in planning and agree to publish this manuscript.
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Pusdekar, A., Ugemuge, N.S., Mistry, A.A. et al. Synthesis and luminescence properties of intensely red-emitting Na5Y(WO4)4:Eu3+ phosphor. J Mater Sci: Mater Electron 35, 336 (2024). https://doi.org/10.1007/s10854-024-12053-1
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DOI: https://doi.org/10.1007/s10854-024-12053-1