article · Proceedings of the Nigerian Society of Physical Sciences
This study reports the use of the successive ionic layer adsorption and reaction (SILAR) technique as a low-cost and rapid method for depositing lead sulphide (PbS) thin films. The films were deposited on soda-lime glass (SLG) substrates by varying the molar concentrations of lead ions (0.3, 0.5, and 0.7 M) at a constant SILAR cycle number of 25. X-ray diffraction (XRD) patterns showed that the deposited PbS thin films were crystalline and had a cubic structure. Fourier-transform infrared (FTIR) spectroscopy indicated nanocrystalline PbS thin films with weak-to-medium M--O bonding. The O--H stretching vibration appeared at 3419.10 cm-1. Bands at 1338.90 and 1220.10 cm-1 were associated with improved crystallinity and C--O stretching vibrations. N--H group vibrations were observed at 1686.42 and 1597.87 cm-1, whereas CH2 bending vibrations occurred between 1482.79 and 1441.44 cm-1.
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DOI: 10.61298/pnspsc.2026.3.339
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