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Study the Effect of Sintering Temperature on the Structural and Optical Properties of Y2O3 Nanoparticles Synthesized by Sol Gel Method
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Comparative Studies on the Effects of Li+ and Bi3+ Sensitisation in Enhancing the Emission Intensity of Y2O3:Eu3+
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Comparative Studies on the Effects of Li+ and Bi3+ Sensitisation in Enhancing the Emission Intensity of Y2O3:Eu3+

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Abstract:

With a high melting point (>2400°C), superior thermal conductivity, and a large band gap (5.8 eV), Y₂O₃ exhibits a high dielectric constant (14–18), a refractive index of ~1.9, and excellent chemical resistance. Its low phonon vibration frequency (~380 cm⁻¹) enables efficient energy transitions for rare-earth (RE) ions, enhancing its suitability as a host for luminescent phosphors. In this study, Y₂O₃ nanoparticles doped with Eu³⁺ and sensitized with either Li⁺ or Bi³⁺ were synthesized via polyol method. A comparative investigation was conducted to evaluate the energy transfer efficiency and luminescence enhancement provided by each sensitizer. Structural and morphological characteristics were examined using X-ray diffraction (XRD) and transmission electron microscopy (TEM), while Fourier-transform infrared spectroscopy (FT-IR) was employed to study absorption features. Photoluminescence (PL) analysis revealed the impact of sensitizer ions on emission intensity, identifying the most effective combination for optimized luminescent performance. These findings demonstrate the potential of sensitized Y₂O₃:Eu³⁺ nanoparticles for advanced luminescence-based applications.

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Periodical:

Advanced Materials Research (Volume 1185)

Pages:

35-46

DOI:

https://doi.org/10.4028/p-cWHs3O

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Online since:

December 2025

Authors:

Davidson Pyngrope*, Amresh I. Prasad, Rajiv Pradhan

Keywords:

Emission Intensity, Energy Transfer, Sensitiser

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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