Effect of polyethylene glycol on structural and electrical properties of TiO2 thin film derived from SOL-GEL technique

Dye-sensitized solar cell (DSSC) is one of the most promising one for environmental and sustainable energy technologies. One of the key factors that affect the performance of DSSCs is the metal oxide layer. In the present research, we focus on the titanium dioxide (TiO2) thin film, as it has been used as a transparent metal oxide for DSSC's application. However, the optimization of several factors which include the preparation technique of nanostructure thin film, high surface area and transparent of TiO2 film electrodes are essential [1]. It is very important to study the evolution of different physical and chemical properties of TiO2 which is effective for controlled modification. Recently, polyethylene glycol (PEG) has been widely used as a template to modify the structure and surface morphology of the TiO2 thin film [2].