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<p>Recently, the integration of rare earth oxides into polymer matrices has attracted significant attention for optical applications. This study explores the effect of incorporating Dysprosium oxide (Dy<sub>2</sub>O<sub>3</sub>) nanoparticles at varying concentrations (1, 3, and 5%) into a polyvinyl alcohol (PVA) matrix. All film preparation was achieved entirely through the use of casting techniques. The impact of Dy<sub>2</sub>O<sub>3</sub> on the structural and optical characteristics of PVA was examined. Structural phase changes resulting from Dy<sub>2</sub>O<sub>3</sub> incorporation were analyzed using X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR). The effect of adding Dy<sub>2</sub>O<sub>3</sub> nanoparticles on the PVA surface was examined using a scanning electron microscope. Optical behaviour was studied through UV–Vis spectrophotometry. As the concentration of Dy<sub>2</sub>O<sub>3</sub> in the PVA matrix increases, the optical absorbance also increases. Additionally, the absorption edge shifts toward longer wavelengths, indicating a reduction in the bandgap energy. Incorporating 5% Dy<sub>2</sub>O<sub>3</sub> into PVA reduces the indirect bandgap from 4.72&#xa0;to 3.85&#xa0;eV. This modification also enhances the refractive index from 1.41 to 1.88. These improvements make Dy<sub>2</sub>O<sub>3</sub>-doped PVA films promising candidates for advanced optoelectronic applications.</p>

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Design and fabrication of tailored Dy2O3 PVA nanocomposites with optical characterization for advanced optoelectronic applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月25日

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  • Jitendra Prakash Chandra,
  • Kiran Thakur,
  • Dinesh Uthra,
  • Ahmed Hashim

摘要

Recently, the integration of rare earth oxides into polymer matrices has attracted significant attention for optical applications. This study explores the effect of incorporating Dysprosium oxide (Dy2O3) nanoparticles at varying concentrations (1, 3, and 5%) into a polyvinyl alcohol (PVA) matrix. All film preparation was achieved entirely through the use of casting techniques. The impact of Dy2O3 on the structural and optical characteristics of PVA was examined. Structural phase changes resulting from Dy2O3 incorporation were analyzed using X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR). The effect of adding Dy2O3 nanoparticles on the PVA surface was examined using a scanning electron microscope. Optical behaviour was studied through UV–Vis spectrophotometry. As the concentration of Dy2O3 in the PVA matrix increases, the optical absorbance also increases. Additionally, the absorption edge shifts toward longer wavelengths, indicating a reduction in the bandgap energy. Incorporating 5% Dy2O3 into PVA reduces the indirect bandgap from 4.72 to 3.85 eV. This modification also enhances the refractive index from 1.41 to 1.88. These improvements make Dy2O3-doped PVA films promising candidates for advanced optoelectronic applications.