| abstract |
Disclosed is a dye suitable for the near infrared region, which can improve the photoelectric conversion efficiency in the visible region and the near infrared region, and is difficult to deactivate, and a dye-sensitized solar cell and a photoelectric conversion element using the same. A squarylium dye represented by formula (5) and a dye-sensitized solar cell or a photoelectric conversion element using the squarylium dye are typically used. (Wherein R 1 and R 2 are a hydrogen atom, an alkyl group, etc., Y 2 is a hydrogen atom, —CH═C (CN) COOR, —COOR, —PO 3 R, etc., and X 1 and X 2 Is C (CH 3 ) 2 , O, N, S, etc.) [Selection figure] None |