In this research, with use of copper chloride, indium chloride, Thiourea (source of sulfur) and deionized water as solvent, using hydrothermal method at 180 ° C and at time of 4, 6, 8, 12, 14, 16, 18 and 20 hours, the composition of CuInS2 nanoparticles was synthesized by Stoichiometric ratio of (1: 1: 2), and in the next step, this compound (CuInS2 ( with cobalt additive at 180 ° C and at tim...