COUMARIN DERIVATIVES AND HIGHLY EFFICIENT COUMARIN-CONTAINING DYES FOR DYE-SENSITIZED SOLAR CELL

摘要

The present invention relates to novel coumarin derivatives and high efficiency dye-sensitized solar cell dyes comprising the same, to the coumarin derivative represented by the formula (1) absorbs light only has excellent photoelectric conversion efficiency as to the long wavelength area containing such coumarin derivatives It can be produced a dye-sensitized solar cell device, a high efficiency by using a dye that: ; Wherein ; R ₁ is , or to be. ; Solar cells, dye-sensitized, a coumarin derivative, a solar cell, long wavelength absorption, narrow band gap