Some novel trichromophoric dyes for Gratzel-type solar cell sentisizer, in which perylene unit and oxadiazole or naphthalimide units were linked with saturated covalent bonds, have been synthesized. The sensitization by the dyes increases photocurrent of nanostructured porous SnO2 electrode obviously in a wide spectral region (from 310 nm to 700 nm). The maximum value of the IPCE has reached 12%.