In the application of dye-sensitized solar cells, the dye we use in device plays a major role which greatly affects the efficiency of solar cells. In the following thesis, we’ve developed a series of asymmetric ligands which based on carbene. We confirm the conformation of dye by the analysis of structure of monocrystal after we’ve successfully synthesized the ruthenium complex. We’ve tried to alter the different substituent on the each place of our ligands. Certainly, we‘ve also carried a series of discussion of physical properties and systematic modifications of molecular structures. And we did develop a few dyes which has high conver- sion efficiency. Among these dyes, CI103 dye has prominent performance of efficiency which up to 9.32% , however , N719 dye gets 8.43% of efficiency in the same condition as CI103. These dyes have found a new way of modification of ruthenium complex dyes.