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<p>Nanoparticles of cadmium sulfide doping with copper were incorporated into the composition of 0 ≤ x ≤ 5 via the reaction of a water based solution of cadmium acetate, thiourea, and NaOH. This resulted in the precipitation of the three components. The samples that were created were characterized by ultraviolet-visual spectroscopy in the range of 200–1100&#xa0;nm, that was used to study the optical properties. Atomic force microscopy, infrared spectroscopy, and scanning electron microscopy were used to assess the surface roughness, shape, and the particle size. The X-ray spectrum was used to determine the crystal structure of CdS with range 13–20&#xa0;nm, where the particles' size decreased as copper was added. The X-ray spectrum shows that the samples have a composition structural. The optical results demonstrated that the band gap decreased as the concentration of added copper increased. The optical band gap of pure CdS is approximately 2.15&#xa0;eV, and the band gap of all of the CdS:Cu samples is estimated to be approximately 1.6–1.8&#xa0;eV. The results suggest that the prepared material can be utilized in various optoelectronic device functions.</p>

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Optical and structures properties of CdS:Cu Nanoparticles

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • Ameen W. Jabbar,
  • Nada K. Abbas

摘要

Nanoparticles of cadmium sulfide doping with copper were incorporated into the composition of 0 ≤ x ≤ 5 via the reaction of a water based solution of cadmium acetate, thiourea, and NaOH. This resulted in the precipitation of the three components. The samples that were created were characterized by ultraviolet-visual spectroscopy in the range of 200–1100 nm, that was used to study the optical properties. Atomic force microscopy, infrared spectroscopy, and scanning electron microscopy were used to assess the surface roughness, shape, and the particle size. The X-ray spectrum was used to determine the crystal structure of CdS with range 13–20 nm, where the particles' size decreased as copper was added. The X-ray spectrum shows that the samples have a composition structural. The optical results demonstrated that the band gap decreased as the concentration of added copper increased. The optical band gap of pure CdS is approximately 2.15 eV, and the band gap of all of the CdS:Cu samples is estimated to be approximately 1.6–1.8 eV. The results suggest that the prepared material can be utilized in various optoelectronic device functions.