Optical and morphological investigation of Y₂O₃:Tb³⁺ (1 mol%) and Bi³⁺ co-doped Y₂O₃:Tb³⁺ (1 mol%) nanoparticles

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Published: Apr 1, 2025
DOI: https://doi.org/10.29070/n61tch90
Keywords:
Nanophosphors, solution-combustion method, XRD, SEM, XPS

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Authors

Renu

Research Scholar, Baba Mastnath University- Asthal Bohar, Rohtak, Haryana

Dr. Heena Dahiya

Assistant Professor, Department of Physical Sciences (Chemistry), Baba Mastnath University- Asthal Bohar Rohtak, Haryana

Dr Jitender Jindal

Assistant Professor, Department of Chemistry, RPS Degree College, Balana, Mahendergarh, Haryana

Dr. Nitika Mor

Assistant Professor, Department of Physical Sciences (Chemistry), Baba Mastnath University- Asthal Bohar Rohtak, Haryana

Abstract

Y₂O₃:Tb³⁺ (1 mol%) and Bi³⁺ co-doped Y₂O₃:Tb³⁺ nanophosphors were synthesized via combustion method at 1000 °C.  The synthesized samples were characterized using a number of techniques, including XRD, SEM, EDX, Elemental mapping, PL, and XPS. XRD and SEM for structural and morphological characterization, which verified phase purity and homogeneous morphology. According to photo-luminescence research, the 4f⁶ 5d¹ → 4f⁷ transition of Tb³⁺ is responsible for the broad excitation at 324 nm and the noticeable blue emission at 465 nm. Bi³⁺ and  ions were successfully incorporated into the Y₂O₃ lattice, as confirmed by XPS, both of which maintained their trivalent oxidation states with little discernible distortion. These results demonstrate effective co-doping and imply improved luminescence through energy transfer processes with very small concentrations of rare-earth element.

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Vol. 22 No. 2 (2025): Journal of Advances in Science and Technology (JAST)

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