Dye-sensitized solar cells (DSSC) are extremely promising because they are made of low-cost materials and do not need elaborate apparatus to manufacture, while still providing a reasonable energy-conversion efficiency. In addition, the materials used in the DSSC are environment friendly. The DSSCs have a number of requirements to meet, such as stability of the combined system and the separate components in their different states. Moreover, the cell should have a long lifetime and have high photoelectrical performance.