In this study, we synthesized three distinct CdS nanocrystals through a straightforward chemical method employing different organic sulphur salts, namely thiocarbonhydrizide, thiocarbonic acid dipotassium salt, and thiocarbonyl bis-thioglycolic acid. The synthesized nanocrystals underwent comprehensive characterization utilizing various analytical techniques, including transmission electron microscopy, FT-IR spectroscopy, H1-NMR spectroscopy, Mass Spectra analysis, X-ray diffraction, and UV-vis spectrophotometry. We identified crucial characteristics, including production efficiency, elemental makeup, lattice dimensions, crystallite dimensions, microstructural distortions, light transmittance, light absorption, and energy band gap, for each of the synthesized CdS nanocrystals. Our findings revealed crystal sizes of 22.56 nm, 12.70 nm, and 4.65 nm, as well as energy band gaps of 4.87 eV, 3.22 eV, and 5.03 eV for the CdS (I), CdS (II), and CdS (III) samples, respectively.

Keywords : CdS nanocrystals, Organic Sulphur Sources, Optical Properties, Lattice Parameters.