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<p>In this work, the solid-state technique was used to fabricate cadmium-doped Zn<sub>3</sub>P<sub>2</sub> (Zn<sub>(3−<i>x</i>)</sub>Cd<sub><i>x</i></sub> P<sub>2</sub>, <i>x</i> = 0.00, 0.03, 0.05, and 0.09) nanoparticles. The impact of the dopant on the structural, morphological, optical, and photoluminescence (PL) properties was investigated using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy (EDX), ultraviolet–visible/near-infrared radiation spectroscopy (UV–Vis–NIR), and PL spectroscopy. From XRD studies, the Zn<sub>3</sub>P<sub>2</sub> and Zn<sub>3</sub>P<sub>2</sub>:Cd nanoparticles were found to have a single-phase tetragonal structure. The lattice parameters increased with Cd concentration from <i>a</i> = 8.0245&#xa0;Å, <i>c</i> = 11.0910&#xa0;Å to <i>a</i> = 8.1968&#xa0;Å, <i>c</i> = 11.1398&#xa0;Å. The microstrain and dislocation density increased with Cd concentration as well. SEM analysis revealed particle agglomeration and increased particle size, in the range of 500&#xa0;nm, post-doping. The purity of the fabricated samples was verified by EDX, which revealed that the only elements present were cadmium, phosphorus, and zinc. Diffuse reflectance spectroscopy was used to examine the optical characteristics using the Kubelka–Munk function. It was discovered that the bandgap value increased from 1.422&#xa0;eV to 1.449&#xa0;eV with doping. PL experiments showed ultraviolet, violet, and blue emission at varied intensity, with an excitation wavelength of 248&#xa0;nm.</p>

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Structural, Optical, and Photoluminescence Properties of Cadmium-Doped Zinc Phosphide Nanoparticles Synthesized by Solid-State Reaction

  • 期刊论文

  • 发表日期：

    2025年12月9日

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  • Nakka Praveenkumar,
  • Nasina Madhusudhana Rao,
  • Mathew K. Moodley,
  • Gili Lifshitz Sherzer,
  • K. V. Madhuri,
  • Anjali Bhattacharyya,
  • Anju Babu,
  • G. Chinna Venkata Subbaiah,
  • Lakshmi Rajesh Chebrolu,
  • B. Sree Sesha Sudha Gayatri,
  • Ravi Kumar Yohan,
  • D. V. Krishna Reddy,
  • Ch. Linga Raju

摘要

In this work, the solid-state technique was used to fabricate cadmium-doped Zn3P2 (Zn(3−x)Cdx P2, x = 0.00, 0.03, 0.05, and 0.09) nanoparticles. The impact of the dopant on the structural, morphological, optical, and photoluminescence (PL) properties was investigated using x-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy (EDX), ultraviolet–visible/near-infrared radiation spectroscopy (UV–Vis–NIR), and PL spectroscopy. From XRD studies, the Zn3P2 and Zn3P2:Cd nanoparticles were found to have a single-phase tetragonal structure. The lattice parameters increased with Cd concentration from a = 8.0245 Å, c = 11.0910 Å to a = 8.1968 Å, c = 11.1398 Å. The microstrain and dislocation density increased with Cd concentration as well. SEM analysis revealed particle agglomeration and increased particle size, in the range of 500 nm, post-doping. The purity of the fabricated samples was verified by EDX, which revealed that the only elements present were cadmium, phosphorus, and zinc. Diffuse reflectance spectroscopy was used to examine the optical characteristics using the Kubelka–Munk function. It was discovered that the bandgap value increased from 1.422 eV to 1.449 eV with doping. PL experiments showed ultraviolet, violet, and blue emission at varied intensity, with an excitation wavelength of 248 nm.