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Pr3+-doped YF3, LaF3, and GdF3 nanoparticles: comparative crystallographic, Raman, optical, and photoluminescence properties

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Abstract

Pr3+-ion doped YF3, LaF3, and GdF3 nanoparticles (NPs) were chemically prepared at a lower temperature (80 °C) to investigate the comparative physiochemical characteristics. X-ray diffraction profile of the nanoproducts exhibited the orthorhombic phase in YF3:Pr and GdF3:Pr NPs, whereas hexagonal structure was found in LaF3:Pr NPs with an estimated crystalline size 12, 23, and 15 nm, respectively. The unit cell constants for YF3:Pr (a = 6.340 Å, b = 7.269 Å, c = 4.317 Å, and unit cell volume = 198.97 (Å)3), LaF3:Pr (a = b = 7.171 Å, and c = 7.388 Å, and unit cell volume = 329.092 (Å)3) and GdF3:Pr (a = 6.465 Å, b = 7.008 Å, and c = 4.528 Å, and unit cell volume = 205.225 (Å)3) were considered to examine the influence of the dopant ions and the host ion’s ionic radius on the crystal phase, and crystallinity. An orthorhombic phase GdF3:Pr NP sample revealed better thermal stability in comparison to the hexagonal phase LaF3:Pr NPs as received in the thermogravimetric outcomes. FTIR spectra exhibited the surface-fastened water molecules which promote the development of colloidal solution in aqueous solvents under the environmental conditions as achieved in absorption spectral analysis. Band gap energy was calculated from the UV/visible spectra to examine the optical behavior of the optically active NPs. The excitation and emission spectrums demonstrated the sharp excitation and emission transitions of the doped Pr3+ ion under excitation from the blue region. Comparatively, the emission and excitation transitions of the YF3:Pr NPs were dominant with respect to the orthorhombic GdF3:Pr and hexagonal LaF3:Pr NPs. YF3:Pr NPs are a useful host matrix for the loading of the activator Pr3+-ion for their use in luminescent phosphor material development.

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Acknowledgements

The author thanks the Researchers Supporting Project number (RSP2023R365), King Saud University, Riyadh, Saudi Arabia.

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  1. College of Science, King Saud University, Riyadh-11451, Saudi Arabia

    Anees A. Ansari & M. A. Majeed Khan

  2. Advanced Materials and Devices Laboratory, Department of Bio-Convergence Science, Advanced Science Campus, Jeonbuk National University, Jeonju-Si, 56212, Republic of Korea

    Sadia Ameen

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Anees A. Ansari: conceptualization, methodology, validation, formal analysis, investigation, data curation, writing — original draft, writing — review and editing, visualization, supervision, funding acquisition, project administration, and resources. M. A. Majeed Khan: methodology, investigation, validation, data curation, and writing — review and editing. Sadia Ameen: validation and data curation.

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Ansari, A.A., Khan, M.A.M. & Ameen, S. Pr3+-doped YF3, LaF3, and GdF3 nanoparticles: comparative crystallographic, Raman, optical, and photoluminescence properties. J Aust Ceram Soc 60, 153–162 (2024). https://doi.org/10.1007/s41779-023-00965-w

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