Study of Some Physical Properties of 5,10,15,20-tetraphenyl-21H,23H-porphine iron choloride (FeTPPCl) Thin Films and Their Photovoltaic Application

Abstract

Solar energy is widely believed to be the most promising renewable energy source to fulfill the ever-increasing energy demand from human society now and into the future. Innovation in solar cell design is required to reduce cost and compete with traditional power generation. Current innovative solar technologies include nanostructured dye-sensitised solar cells and polymer solar cells, which both contain organic materials. One these groups of materials, organic molecules with conjugated π electron systems, such as porphyrin molecules, have created a new materials that offer a new applications in solar cell technology.One of these materials is 5,10,15, 20-tetraphenyl -21H, 23H- porphine iron (III) chloride (FeTPPCl).Organic solar cells have been explored as a potentially low-cost alternativeto silicon solar cell due to their lower fabrication costs compared to crystalline. This thesis is focused on the study of thestructural , optical and Dc electrical properties of FeTPPCl in thin film form which prepared by thermal evaporation technique. The structural of powder and as-deposited and irradiated thin films of FeTPPCl are investigated by X-ray diffraction technique andTransmation electron microscope (TEM). The results indicate the polycrystalline nature of the powder form and as-deposited and irradiated films. The analysis of XRD diffraction pattern indicates that FeTPPCl has atetragonal structure with lattice constants of a = 13.53 Å and c= 9.82 Å and with space group (I4/m, Z=2). Thetransimation electron microscope (TEM) showed spherical nanoparticles with average diameter 16 nmof the