Deposition of Thin Electroconductive Layers of Tin (II) Sulfide on the Copper Surface Using the Hydrometallurgical Method: Electrical and Optical Studies

Thin films of tin (II) sulfide (SnS) were deposited onto a 500 µm thick copper substrate by chemical bath method. The effect sodium (Na) doping in these was studied. synthesis the performed at temperatures 60, 70, and 80 °C for 5 min. microstructure SnS analyzed scanning electron microscopy (SEM) showed compact morphology °C. edges grains rounded off with addition commercial surfactant. thickness different layers on found to be 230 nm from spectroscopic ellipsometry cross-section analysis using SEM. deposition parameters such as temperature, surfactant addition, time did not affect layers. From X-ray diffraction (XRD) analysis, size crystallites around 44 nm. Depending process conditions, Na affects ways. A study conductivity provides specific value 0.3 S. energy dispersive X-rays (EDAX) equipped SEM revealed Sn:S stoichiometry film 1:1, which confirmed photoelectron spectroscopy (XPS) analysis. determined band-gap is equal 1.27 eV good agreement literature data.