Effect of Urea on the Rose Bengal Sensitized Photocurrent

Rose Bengal 감응 광전류에 미치는 Urea의 영향

  • 윤길중 (고려대학교 이과대학 화학과) ;
  • 강성철 (고려대학교 이과대학 화학과) ;
  • 김강진 (고려대학교 화학과)
  • Published : 19901100


Electron injection from excited rose bengal into the conduction band of a thin film of SnO$2$, semiconductor was investigated in an electrochemical cell, ITO/SnO$2$/rose bengal, NaClO$4$/Pt. It was observed that urea enhanced the supersensitized photocurrent, followed by the reduction in the photocurrent after a shallow maximum. Spectroscopic analyses of the dye solution containing urea revealed that dye aggregation appeared to be involved in the increased photocurrent, although the concentration of the dye was continuously decreased dye to photochemical reactions.



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