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<p>High energy conversion sensors are a special kind of luminous material that plays an important role in fields including medical diagnostics, physics, and radiation detection. A growing trend in this field is the development of flexible, wearable sensors, fabricated on substrates like fabrics and polymers, which offer the flexibility needed to undergo mechanical deformation caused by the human body. In the current research, flexible Cerium doped Tungstate Oxide/Titanium Dioxide (WO<sub>3</sub>/TiO<sub>2</sub>: Ce) nanocomposite film was fabricated by a low-cost method based PVA matrix. Several techniques were used to characterize the produced nanopowders and study&#xa0;about their structural, morphological, and optical features. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and Raman all showed characteristic peaks for components relating to WO<sub>3</sub> and TiO<sub>2</sub> in the nanocomposite. Results from XPS confirmed strong interactions between WO<sub>3</sub> and TiO<sub>2</sub>, with distinct binding energies indicative of specific oxidation states, including Ti<sup>4+</sup>, W<sup>6+</sup>, Ce<sup>4+</sup>, and Ce<sup>3+</sup>. Nanoparticles, with an average particle size of 60–65 nm, were uniformly distributed in the matrix according to the FESEM and TEM images. The behavior of alpha particles from a <sup>241</sup>Am source was analyzed through nanopowders and PVA polymer using Monte Carlo simulation, with optimal thicknesses confirmed by FESEM analysis. The optical characteristics were investigated using photoluminescence spectroscopy (PL), and ion beam-induced luminescence (IBIL). The produced nanocomposites were evaluated for their responses to ionizing radiation under a <sup>241</sup>Am alpha source; Prepared WO<sub>3</sub>/TiO<sub>2</sub>: Ce flexible nanocomposite film showed high-sensitivity (89.47%) to alpha irradiation and strong green emission at room temperature compared with pure WO<sub>3</sub> and TiO<sub>2</sub> films. Our findings highlight WO<sub>3</sub>/TiO<sub>2</sub>: Ce nanocomposite's potential as a promising optical flexible sensor for high-energy conversion in radiation detection and optical applications.</p>

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Flexible cerium-doped tungstate oxide/titanium dioxide nanocomposite for high-sensitivity energy conversion in optical applications

  • 期刊论文

  • 发表日期：

    2025年1月7日

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  • M. Hajiebrahimi,
  • S. Alamdari,
  • O. Mirzaee,
  • D. Albov,
  • P. Hvizdos

摘要

High energy conversion sensors are a special kind of luminous material that plays an important role in fields including medical diagnostics, physics, and radiation detection. A growing trend in this field is the development of flexible, wearable sensors, fabricated on substrates like fabrics and polymers, which offer the flexibility needed to undergo mechanical deformation caused by the human body. In the current research, flexible Cerium doped Tungstate Oxide/Titanium Dioxide (WO3/TiO2: Ce) nanocomposite film was fabricated by a low-cost method based PVA matrix. Several techniques were used to characterize the produced nanopowders and study about their structural, morphological, and optical features. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and Raman all showed characteristic peaks for components relating to WO3 and TiO2 in the nanocomposite. Results from XPS confirmed strong interactions between WO3 and TiO2, with distinct binding energies indicative of specific oxidation states, including Ti4+, W6+, Ce4+, and Ce3+. Nanoparticles, with an average particle size of 60–65 nm, were uniformly distributed in the matrix according to the FESEM and TEM images. The behavior of alpha particles from a 241Am source was analyzed through nanopowders and PVA polymer using Monte Carlo simulation, with optimal thicknesses confirmed by FESEM analysis. The optical characteristics were investigated using photoluminescence spectroscopy (PL), and ion beam-induced luminescence (IBIL). The produced nanocomposites were evaluated for their responses to ionizing radiation under a 241Am alpha source; Prepared WO3/TiO2: Ce flexible nanocomposite film showed high-sensitivity (89.47%) to alpha irradiation and strong green emission at room temperature compared with pure WO3 and TiO2 films. Our findings highlight WO3/TiO2: Ce nanocomposite's potential as a promising optical flexible sensor for high-energy conversion in radiation detection and optical applications.