Abstract
In this work we study the influence of pH on the optical and structural properties of SnS thin films. The films were grown on the glass substrate using chemical bath deposition method. Hydrous tin chloride and thioacetamide were used as cationic and anionic precursors respectively. The pH of the solution was changed using Ammonia. The film was prepared at five different pH values 9.2, 9.3, 9.4, 9.5 and 9.6. The optical and structural properties were studied using UV Visible spectrophotometer and XRD. From optical characterisation it was found that the band gap decreases as the pH increases from 9.2 to 9.5. The crystallanity of the film increased as the pH value increased.
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