Enhancement of Structural and Optical Properties of TiO2/ ZnO Thin Films for Solar Cell Applications

Abstract

DSSCs (dye-sensitized solar cells) are considered low-cost photovoltaic technologies due to their simple manufacturing methods. In this project, titanium dioxide (TiO2) and zinc oxide (ZnO) nanoparticles were deposited on the Glass based flexible substrate. TiO2 and ZnO nanostructures were synthesized separately by using sol-gel method. Spin coater was used to prepare the TiO2/ZnO thin films on glass substrates. The surface morphology of TiO2 and ZnO was studied using a scanning electron microscope (SEM). The crystallinity and structure of the produced TiO2 and ZnO nanoparticles were investigated using X-ray diffraction (X-Rays). The optical absorption was measured using a UV-Vis spectrophotometer. Dye-sensitized solar cells (DSSCs) were proposed for the ZnO/TiO2/Glass films as the working electrode.