Patent ID: 8455642

Claim:
A photosensitizer for a dye sensitized solar cell, wherein the photosensitizer is a ruthenium (Ru) complex represented by the following general formula (I) wherein X is R a , N(R a ) 2 , wherein R a is —H, —C 6 H 5 , —C m H 2m+1 (m=1 to 15), —OC p H 2p+1 (p=1 to 15) or —SC r H 2r+1 (r=1 to 15) and n is 1 to 3, Y is R b , wherein R b is —H or —C m H 2m+1 (m=1 to 15), R c is —H, —C m H 2m+1 (m=1 to 15), —OC p H 2p+1 (p=1 to 15) or —SC r H 2r+1 (r=1 to 15), and n is 1 to 3, and Z is R a , —N(R a ) 2 , —COOH, —CN, —CONH 2 , —PO 3 H 2 , —R d , or —CONHR d , wherein R a is —H, —C 6 H 5 , —C m H 2m+1 (m=1 to 15), —OC p H 2p+1 (p=1 to 15) or —SC r H 2r+1 (r=1 to 15), R d is —C 6 H 5 or —C m H 2m+1 (m=1 to 15), and n is 1 to 3.