Effect of the Linkers Between 9,9-Dimethylfluorenyl Terminal Moiety and a-Cyanoacrylic Acid Anchor on the $\lambda_{max}$ of the UV Spectrum and the Energy Efficiency in Dye-Sensitized Solar Cell (DSSC)

  • 이민우 (태양전지센터, 한국과학기술연구원) ;
  • 차수봉 (서강대학교 화학과) ;
  • 이정렬 (서강대학교 화학과) ;
  • 박세웅 (태양전지센터, 한국과학기술연구원) ;
  • 김경곤 (태양전지센터, 한국과학기술연구원) ;
  • 박남규 (태양전지센터, 한국과학기술연구원) ;
  • 이덕형 (서강대학교 화학과)
  • Published : 2010.02.17


Six metal-free organic dyes having thiophene (1), benzene-thiophene (2), thiophene-benzene (3), thiophene-pyridine(4), thiophene-thiophene (5), and pyridine (6) linkers between 9,9-dimethylfluorenyl terminal group and $\alpha$-cyanoacrylic acid anchor were synthesized. Among them, organic dye 5 showed the longest ${\lambda}}max$ value (424 nm) in UV-Vis absorption spectrum, better incident monochromatic photon-to-current conversion efficiency (IPCE), highest short circuit photocurrent density (JSC, 9.33 mA2/cm2), and highest overall conversion efficiency ($\eta$, 3.91%).