14 Photoenergy Conversion (Dye-Sensitized Solar Cells)
493
Fig. 14.19 Chemical structures of cyanine dye sensitizers for TiO 2 DSSCs
electron transfer from the excited dyes to the CB of TiO 2 and dramatically decreased
the IPCE values.
Symmetric cyanine dyes Cyb3 and DYE7 and an asymmetric cyanine dye DYE8
were also designed and synthesized as sensitizers for TiO 2 DSSCs (Fig. 14.19) (Guo
et al. 2005; Chen et al. 2005c). The cyanine dyes aggregated on the TiO 2 surface and
efficiently harvested light. The TiO 2 DSSCs using Cyb3, DYE7, and DYE8 yielded η
values of 1.01%, 1.3%, and 2.9%, respectively. The electron density was distributed
on the indole moiety with a carboxylic acid anchoring group in the asymmetric
493
Fig. 14.19 Chemical structures of cyanine dye sensitizers for TiO 2 DSSCs
electron transfer from the excited dyes to the CB of TiO 2 and dramatically decreased
the IPCE values.
Symmetric cyanine dyes Cyb3 and DYE7 and an asymmetric cyanine dye DYE8
were also designed and synthesized as sensitizers for TiO 2 DSSCs (Fig. 14.19) (Guo
et al. 2005; Chen et al. 2005c). The cyanine dyes aggregated on the TiO 2 surface and
efficiently harvested light. The TiO 2 DSSCs using Cyb3, DYE7, and DYE8 yielded η
values of 1.01%, 1.3%, and 2.9%, respectively. The electron density was distributed
on the indole moiety with a carboxylic acid anchoring group in the asymmetric