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Spectroscopic Investigation of Phosphate Glasses for Resins Free W-LED Applications

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Abstract

We prepare glasses with a chemical composition of 10NaO2-10SrO2-10Gd2O3-69P2O5-1Dy2O3 (NSrODy) and 10NaF-10SrO2-10GdF3-69P2O5-1Dy2O3 (NSrFDy) melt-quenching method and study the effect of Gd2O3 and GdF3 compounds on their physical and luminescence properties. We observed higher emission spectra intensity of NSrFDy glass than that of NSrODy glass. The difference in the intensity is attributed to the difference in OH concentrations in each samples and the efficient energy transfer from Gd3+ ions to Dy3+ ions in the case of NSrFDy glass. We also find that the 6H15/2 → 6F11/2 + 6H9/2 transition has a high oscillator strength and the relation among the J-O parameters, Ωλ (λ = 2, 4, 6), is Ω2 > Ω4 > Ω6 for both glasses. The NSrFDy glass demonstrates a high value of stimulated emission cross-section and, hence, considered good for laser gain medium. We find that CIE coordinates are (0.37, 0.42) and (0.37, 0.41), while CCT values are 4378 K and 4426 K for NSrODy and NSrFDy glasses, respectively.

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Funding

This project is funded by the National Research Council of Thailand (NRCT). J. Kaewkhao would like to thank the National Research Council of Thailand (NRCT) under Research Grants for Talented Mid-Career Researchers Project (Project number N41A640097). Thanks are also due to Thailand Science Research and Innovation (TSRI) for partially supporting this research. This work was funded by the Researchers Supporting Project Number (RSP2022R448) King Saud University, Riyadh, Saudi Arabia. This work is also supported by National Natural Science Foundation of China (Project number 51976081).

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All persons who meet authorship criteria are listed as authors, and all authors certify that they have participated sufficiently in the work to take public responsibility for the content, including participation in the concept, design, analysis, writing, or revision of the manuscript. The details of the authors and their contributions are as under. M. Shoaib: conceptualization, formal analysis, data analysis, and writing—original draft. I. Khan: resources, visualization, data analysis, and writing. S.M Wabaidur: supervision, conceptualization, data curation, funding acquisition, investigation, methodology, and project administration. M.A Islam: writing—review and editing. G. Rooh: supervision and writing—review and editing. N. Chanthima: resources, visualization, and writing—review and editing. I. Ullah: resources, visualization, and writing—review. J. Kaewkhao: supervision, funding acquisition, investigation, methodology, project administration, and resources. A. Ahad: resources, visualization, and writing—review. Fen Qiao: resources, visualization, and writing—review.

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Correspondence to I. Khan or J. Kaewkhao.

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Shoaib, M., Khan, I., Wabaidur, S.M. et al. Spectroscopic Investigation of Phosphate Glasses for Resins Free W-LED Applications. Braz J Phys 53, 19 (2023). https://doi.org/10.1007/s13538-022-01224-2

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