A short review of iodide salt usage and properties in dye sensitized solar cell application: Single vs binary salt system

Electrolyte is one of the main components of dye sensitized solar cell (DSSC) preparation. Electrolyte is an ionic charge transfer medium between charge and discharge. In order to improve and study the performance of electrolyte in the DSSC, different sized iodide salts have been applied. In this review, the effect of different type of iodide salts in the performance of electrolyte and DSSC were presented. Single and binary salt systems usage in DSSC with iodide salt for solar conversion efficiency, ionic conductivity and properties were presented. Single salt which is in large/bulky sized able to enhance the ionic conductivity while for the small sized iodide salt, it give higher solar conversion efficiency. As both small and large sized iodide salt combine, it will reveal a better result in ionic conductivity and solar conversion efficiency in DSSC. Furthermore, DSSC was discovered by Hermann Wilhelm Vogel in 1873 which related to the color of photography. He found out that addition of green dye will make the photographic films more sensitive to the light at longer wavelength. About 118 years later, DSSC was first carried out by O’regan and Gratzel.