Chemical Bath Deposition of SnS Thin Films: AFM, EDAX and UV-Visible Characterization

In this study, chemical bath deposition has been used to prepare tin sulfide thin films on microscope glass slides from acidic aqueous solution. The effect of bath temperature on the properties of thin films was investigated using atomic force microscopy, energy dispersive X-ray analysis and UV- Visible spectrophotometer. Atomic force microscopy image for the films deposited at 80 °C revealed that all grains uniformly distributed over the surface of substrate indicated well defined growth of SnS material. Optical absorption showed the presence of direct transition and band gap energy decreased from 1.5 to 1.2 eV with the increased of bath temperature from 40 to 80 °C.