Patent ID: 7321037

Claim:
A photosensitizer dye for a dye sensitized solar cell, wherein the photosensitizer dye is a ruthenium (Ru) complex represented by the following general formula (1), wherein Y 1 and Y 2 independently represent hydrogen atom (H), lithium (Li), sodium (Na) or tetra-alkyl ammonium groups represented by the following general formula (2), wherein A, B, C and D independently represent C m H 2m+1 (m=1˜6), and wherein X 1 represents one of the following general formulas of formula (3), formula (4), formula (5), formula (6), formula (7) and formula (8), and X 2 represents hydrogen atom (H) or the same group as X 1 , wherein Ra, Ra′ are independently selected from the group consisting of H, C m H 2m+1 (m=1 to 15) and OC p H 2p+1 (P=1 to 15), and n=1 to 4, wherein Rb is selected from the group consisting of H, C m H 2m+1 (m=1 to 15) and OC p H 2p+1 (P=1 to 15), and n=1 to 4, wherein Rc is selected from the group consisting of H, C m H 2m+1 (m=1 to 15) and OC p H 2p+1 (P=1 to 15), and n=1 to 2, wherein Rd is selected from the group consisting of H, C m H 2m+1 (m=1 to 15) and OC p H 2p+1 (P=1 to 15), and n=1 to 2, wherein Re, Rf, Rg are independently selected from the group consisting of H, C m H 2m+1 (m=1 to 15) and OC p H 2p+1 (P=1 to 15), and n=1 to 2, wherein Ri, Rj, Rh are independently selected from the group consisting of H, C m H 2m+1 (m=1 to 15) and OC p H 2p+1 (P=1 to 15), and n=1 to 2.