An investigation on substrate temperature and copper to sulphur molar ratios on optical and electrical properties of nanostructural CuS thin films prepared by spray pyrolysis method

► We studied the nanostructural CuS thin films by spray pyrolysis method. ► For the first time we used copper acetate as the precursor. ► XRD data show various growth conditions lead to polycrystalline/amorphous films. ► By PL spectra we found the presence of quantum confined effects caused by nano grains. ► Hall effect data including hole density and their mobilities are presented.