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<p>This research contributes to the field of advanced materials manufacturing by employing innovative synthesis techniques, such as the sol–gel dip-coating process, to fabricate functional TiO<sub>2</sub> thin films. The incorporation of nanostructured materials, such as nano SiO<sub>2</sub>, enhances the material’s properties. Titanium dioxide (TiO<sub>2</sub>) sol was synthesized at room temperature using the precursor titanium tetraisopropoxide (Ti[OCH(CH<sub>3</sub>)<sub>2</sub>]<sub>4</sub>) coated over glass substrates with the addition of nano SiO<sub>2</sub>. The utilization of advanced characterization techniques such as x-ray diffractometer (XRD), field emission scanning electron microscopy (FESEM), and UV-Visible spectrometer (UV-Vis) were employed to analyze the physical, surface, optical, and electrical properties of the samples after annealing at 450&#xa0;°C. Wettability was studied using a water contact angle (WCA) analyzer, while the electrical parameters of the coated samples were studied through I-V characteristics with an efficiency of 15%. Experimental results revealed that the TiO<sub>2</sub>:SiO<sub>2</sub> film coating exhibited hydrophilic characteristics, with a WCA of up to 49°. Furthermore, it showed a good absorption rate of 1.36 with a 7% reduction in reflection. The study demonstrates TiO<sub>2</sub>:SiO<sub>2</sub> thin films enhanced optical properties, improving absorption and reducing reflection for energy applications.</p>

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Sol–Gel Synthesis of TiO2 Thin Films Doped with Nano SiO2: Improved Optical and Electrical Properties

  • 期刊论文

  • 发表日期：

    2025年8月18日

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  • Natarajan Purushothaman,
  • R. Elansezhian,
  • A. V. Raviprakash,
  • B. Radjaram

摘要

This research contributes to the field of advanced materials manufacturing by employing innovative synthesis techniques, such as the sol–gel dip-coating process, to fabricate functional TiO2 thin films. The incorporation of nanostructured materials, such as nano SiO2, enhances the material’s properties. Titanium dioxide (TiO2) sol was synthesized at room temperature using the precursor titanium tetraisopropoxide (Ti[OCH(CH3)2]4) coated over glass substrates with the addition of nano SiO2. The utilization of advanced characterization techniques such as x-ray diffractometer (XRD), field emission scanning electron microscopy (FESEM), and UV-Visible spectrometer (UV-Vis) were employed to analyze the physical, surface, optical, and electrical properties of the samples after annealing at 450 °C. Wettability was studied using a water contact angle (WCA) analyzer, while the electrical parameters of the coated samples were studied through I-V characteristics with an efficiency of 15%. Experimental results revealed that the TiO2:SiO2 film coating exhibited hydrophilic characteristics, with a WCA of up to 49°. Furthermore, it showed a good absorption rate of 1.36 with a 7% reduction in reflection. The study demonstrates TiO2:SiO2 thin films enhanced optical properties, improving absorption and reducing reflection for energy applications.