A study of CdZnS and PbS nano-crystalline thin films deposited by chemical bath deposition (CBD) method has been made using Four point probe for electrical sheet resistivity, UV-Vis spectroscopy and solar simulator for optical and Photovoltaic cell properties respectively. Sheet resistivity for CdZnS thin films was found to decrease as the concentration of Zn increased while PbS thin films had their sheet resistivity increase with increase in bath concentrations. Optical band gap for CdZnS had a tunability depending on the various Zn2+ concentrations used successfully as demonstrated by...