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Abstract <p>Niobium (Nb) and Neodymium (Nd) co-doped TiO<sub>2</sub> nanoparticles have been synthesized with varying weight concentration and subjected to Fourier Transform Infrared Spectroscopy (FTIR), Ultraviolet Visible Spectroscopy (UV-Visible), Photoluminescence Spectroscopy (PL), Raman and X-ray Diffraction (XRD) spectroscopic studies. Hydrothermal synthesis has been carried out to obtain good yield without any impurities. Optical analysis of the materials with dopant and co-dopant revealed the absorption of energy in the visible region due to the generation of new energy levels in the bandgap of TiO<sub>2</sub>. The emission in PL inferred that, the increase in the injection of electrons in the additional energy levels with broad peak at 450&#xa0;nm and sharpened peak at 525 nm with the dopants. The vibrational mode obtained from Raman spectroscopy confirmed the functional groups and the bonding nature of Nb and Nd with TiO<sub>2</sub>. The rutile and anatase phase of the TiO<sub>2</sub> molecules is confirmed with the diffraction peaks obtained at specific angles and referred with JCPDS card number. From the analysis, it is inferred that the Nb/Nd co-doped TiO<sub>2</sub> is suitable for photovoltaic applications.</p>

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Optical and Structural Properties of Nb-Nd co-doped TiO2 Nanoparticles Synthesized by Hydrothermal Method

  • 期刊论文

  • 发表日期：

    2025年6月18日

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  • T. K. Sudheer,
  • V. G. Prabitha,
  • Janarthanan Balasundaram,
  • A. Dinesh,
  • S. Santhosh Kumar,
  • Madhappan Santhamoorthy

摘要

Abstract

Niobium (Nb) and Neodymium (Nd) co-doped TiO2 nanoparticles have been synthesized with varying weight concentration and subjected to Fourier Transform Infrared Spectroscopy (FTIR), Ultraviolet Visible Spectroscopy (UV-Visible), Photoluminescence Spectroscopy (PL), Raman and X-ray Diffraction (XRD) spectroscopic studies. Hydrothermal synthesis has been carried out to obtain good yield without any impurities. Optical analysis of the materials with dopant and co-dopant revealed the absorption of energy in the visible region due to the generation of new energy levels in the bandgap of TiO2. The emission in PL inferred that, the increase in the injection of electrons in the additional energy levels with broad peak at 450 nm and sharpened peak at 525 nm with the dopants. The vibrational mode obtained from Raman spectroscopy confirmed the functional groups and the bonding nature of Nb and Nd with TiO2. The rutile and anatase phase of the TiO2 molecules is confirmed with the diffraction peaks obtained at specific angles and referred with JCPDS card number. From the analysis, it is inferred that the Nb/Nd co-doped TiO2 is suitable for photovoltaic applications.