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<p>This study aims to synthesize of new hybrid nanocomposites from SiO<sub>2</sub>-Sb<sub>2</sub>O<sub>3</sub> nanoparticles doped with PS-PEG by a casting technique, intended for diverse applications in optics, nanoelectronics, and nanoinsulation, including pressure sensors and capacitors. The structural, optical, and dielectric characteristics of PS-PEG-SiO<sub>2</sub>-Sb<sub>2</sub>O<sub>3</sub> were examined. The structural characterization of these nanocomposites involved Fourier transform infrared (FTIR) spectroscopy and optical microscopy (OM).The results of the optical properties indicated that a 3.9% increase in SiO₂-Sb₂O₃ nanoparticles corresponds to a 79.2% increase in absorbance at λ = 340 nm. At a SiO₂-Sb₂O₃ nanoparticle loading of 3.9 wt%, the allowed and forbidden energy gaps diminished from 4.1 to 3 eV and from 3.8 to 2.1 eV, respectively. The optical characteristics of PS-PEG augmented with the increment of SiO₂-Sb₂O₃ nanoparticle concentration, encompassing the real (ε<sub>1</sub>) and imaginary (ε<sub>2</sub>) components of the dielectric constants, optical conductivity (σ<sub>op</sub>), absorption coefficient (α), refractive index (n), and extinction coefficient (k).The findings of the dielectric properties indicated that the dielectric coefficients of PS-PEG films rose from 3.3 to 4.4 when the SiO₂-Sb₂O₃ content climbed to 3.9 wt% at a frequency of 10<sup>2</sup> Hz.The conductivity rose from 1.0 × 10<sup>–11</sup> S/cm to 1.6 × 10<sup>–11</sup> S/cm, reflecting a 60% increase, as the SiO₂-Sb₂O₃ composition was elevated to 3.9 wt% at 10<sup>2</sup> Hz.PS-PEG-SiO₂-Sb₂O₃ nanocomposites exhibit significant potential for application in various electrical, electronic, and optical nanodevices. The results of pressure sensors application showed the dielectric factors were boosted with rise in the pressure.</p>

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Manufacturing and Controlling the Microstructural, Optical and Dielectric Features of PS-PEG/SiO2-Sb2O3 Promising Films for Pressure Sensors and Flexible Optoelectronics Applications

  • 期刊论文

  • 发表日期：

    2026年2月18日

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  • Ahmed Hashim,
  • Ali Salim Jawad,
  • Hiba Salman Abdulsalam,
  • Noureddine Elboughdiri

摘要

This study aims to synthesize of new hybrid nanocomposites from SiO2-Sb2O3 nanoparticles doped with PS-PEG by a casting technique, intended for diverse applications in optics, nanoelectronics, and nanoinsulation, including pressure sensors and capacitors. The structural, optical, and dielectric characteristics of PS-PEG-SiO2-Sb2O3 were examined. The structural characterization of these nanocomposites involved Fourier transform infrared (FTIR) spectroscopy and optical microscopy (OM).The results of the optical properties indicated that a 3.9% increase in SiO₂-Sb₂O₃ nanoparticles corresponds to a 79.2% increase in absorbance at λ = 340 nm. At a SiO₂-Sb₂O₃ nanoparticle loading of 3.9 wt%, the allowed and forbidden energy gaps diminished from 4.1 to 3 eV and from 3.8 to 2.1 eV, respectively. The optical characteristics of PS-PEG augmented with the increment of SiO₂-Sb₂O₃ nanoparticle concentration, encompassing the real (ε1) and imaginary (ε2) components of the dielectric constants, optical conductivity (σop), absorption coefficient (α), refractive index (n), and extinction coefficient (k).The findings of the dielectric properties indicated that the dielectric coefficients of PS-PEG films rose from 3.3 to 4.4 when the SiO₂-Sb₂O₃ content climbed to 3.9 wt% at a frequency of 102 Hz.The conductivity rose from 1.0 × 10–11 S/cm to 1.6 × 10–11 S/cm, reflecting a 60% increase, as the SiO₂-Sb₂O₃ composition was elevated to 3.9 wt% at 102 Hz.PS-PEG-SiO₂-Sb₂O₃ nanocomposites exhibit significant potential for application in various electrical, electronic, and optical nanodevices. The results of pressure sensors application showed the dielectric factors were boosted with rise in the pressure.