Optimization of Copper Ion Concentration into the Lattice of Barium Sulphide Nanoparticles Synthesized via a Chemical Approach

August 23, 2025Open Access

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This research aims to optimize copper ion concentration in barium sulphide nanoparticles and analyze its effects on film properties.
Fabricated copper barium sulphide thin films using chemical bath deposition on glass substrates.
Characterized films with x-ray diffraction, scanning electron microscopy, energy-dispersive X-ray, and UV-visible spectroscopy.
Examined crystallite sizes, dislocation density, strain, and optical properties with varying copper concentrations.
Copper doping increased crystallite sizes from 18.80 to 21.96 nm and decreased dislocation density and strain.
Transmittance of thin films improved from 20% to 50% with higher copper concentrations.
Optical band gap varied significantly from 1.65 to 3.12 eV, indicating potential for solar energy applications.

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Research reveals the impact of copper doping on thin film properties, suggesting applications in solar energy.

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OKAFOR et al. (2025) studied this question.

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