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A study for optical and structural properties of CuInS2 nanoparticles
Ali Abu Odeh
Copper indium sulfide (CuInS2) is one of the most promising ternary materials to be used in many applications because of its suitable optical band gap, cost-effective and non-toxic. CuInS2 nanoparticles have been synthesized at different copper to indium (Cu/In) molar ratios; 0.1, 0.5, 0.8, 1.2, and 1.4. Subsequently, these were deposited on glass substrates and under annealing temperature 300 °C via the electrospinning method. The optical properties have been analyzed at room temperature using UV-visible (UV-vis) spectroscopy which revealed a decrease in the optical bandgap from 1.52 to 1.32 eV with increasing Cu/In molar ratio. The structural properties have been analyzed in detail by X-ray diffraction (XRD), the patterns shown improvement in the quality and size of the ternary crystals with increasing the Cu/In molar ratio