Dye-sensitized solar cells (DSSCs) have been extensively studied. One of the major obstacles to the rapid commercialization of DSSCs is their lower conversion efficiency than that of conventional p-n junction solar cells [1], which may be attributed to poor charge separation in the DSSC structure. Therefore, charge transfer structures, including Au nanoparticles and quantum dots, has been utilized in DSSCs to improve device performance by causing charge separation in the photoelectrodes [2], [3], [4] and [5].