Nano material is an important field in world of science and technology. In this work, activated carbon and metal chalcogenide thin films were discussed. Activated carbon has high surface area and porosity structure. Basically, it could be synthesized by using various raw materials under carbonization and chemical activation process. Utilization of activator such as KOH, NaOH, zinc chloride, phosphoric acid, sulphuric acid could improve texture properties and adsorption capacity. On the other hand, metal chalcogenide thin films have been prepared by using various deposition techniques including physical and chemical method. These materials have great potential in solar cell, sensor device, laser device and optoelectronic applications. Characterization of metal sulfide, metal selenide and metal telluride thin films was studied by using different tools.