Comparative Study of Dye-Sensitized Solar Cell Based on Carbon Black and Graphite as Cathode Materials

In this paper, the comparative studies of dye sensitized solar cells (DSSC) manufactured with different cathode materials have been investigated. It has been observed that different cathode materials have different bandgap energies and it directly affect the efficiency of DSSC. The tested materials for counter electrode are carbon black and graphite. Although both of these materials are carbon based but there is significant difference in the photoelectric conversion efficiencies of these cells. Surface morphology of thin films, absorption spectrum after adsorbing dye were investigated for both cells by scanning electron microscopy, UV-visible spectrophotometer. The results show that carbon black (4.19 %) performs more efficient than graphite (2.10%). Index Term-DSSC; titanium dioxide film, carbon, graphite.