Novel photosensitized dyes having trifluoromethylacrylic acid as an acceptor-anchor moiety (MCL26-29) are synthesized. These dyes seem to suppress the back-donation currents from the conduction band of TiO2 semiconductor to the electrolyte. Their fabricated dye-sensitized solar cells (DSCs) show high IPCE performances (MCL27; over 80% between 400-520 nm, max 90% at 465 nm). In particular, the high IPCE properties are compared with more than 80 article examples.