Abstract
A research on the deposition and Characterization of SnS Thin Films by Chemical Bath Deposition Technique using Ammonia (NH3) as a complexing agent. Thin film of Tin (II) sulphide (SnS) is deposited onto glass substrates using chemical bath deposition (CBD) at room temperature for 3hours and 1hour. The optical properties of the film were measured using Double Beam UV- Spectrophotometer with serial number UV061514, Energy dispersive X-ray florescence (EDXRF) determines the compositions together with Rutherford Back Scattering (RBS) analysis revealed that thin films have percentage compositions of the elements (Sn/S, 50.1/49.9 for 3hours and Sn/S, 50.4/49.6 for 1hour) and their thicknesses are 100nm for 3hours and 150nm for 1hour. It was found that SnS thin film exhibits p-type conduction. Optical band gap values of direct and indirect transitions are estimated to be 1.98eV to 2.01eV and 1.82eV to 1.98eV for the two samples respectively. The other optical properties calculated from transmittance using appropriate equations are absorbance, reflectance, band gap , absorption coefficient, optical conductivity, refractive index and extinction coefficient.
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