The nanocomposites of transition metal dichalcogenides (TMDs) and metal oxides (MOs) show enhanced properties for photovoltaic applications. In view of this, we have reported the synthesis of a series of tungsten sulphide/tungsten oxide (WS2/WO3) nanocomposites, wherein tungsten to sulphur ratio has been gradually varied to achieve the optimized properties for photovoltaic applications. The samples were analysed for structural, optical, morphological, microstructural, electrokinetic and electrochemical properties by various characterization techniques. Integrating the properties of WS2 and WO3 provided enhanced properties in the form of wider absorbance range, optimized band gap, better colloidal stability and reduced charge transfer resistance. The as-synthesized nanocomposites showed the absorbance in UV & visible regions with the band gap varying from 1.54 eV to 1.68 eV. The zeta potential measurement showed high colloidal stability of some of the nanocomposites with values < −30 mV along with their uniform distribution. The electrochemical behaviour of the samples has been studied by cyclic voltammetry and potentio electrochemical impedance spectroscopy in which prominent redox peaks and diffusive behaviour have been observed. The impedimetric properties revealed the presence of Warburg diffusion which shows their suitability for photovoltaic applications. The sample with least sulphur to tungsten molar ratio was observed to have lowest charge transfer resistance and highest exchange current density of 198.8 μA. The samples with molar ratio nearly unity have high charge transfer resistance and low exchange current density. The present work reveals that the optical, electrokinetic and electrochemical properties of WS2/WO3 nanocomposites can be optimized for solar cell application by controlling the precursors’ concentration.