Organic Dyes Containing Coplanar Dihexyl-Substituted Dithienosilole Groups for Efficient Dye-Sensitised Solar Cells

Figure 1

Absorption spectrum of CL1 dye showing an absorption band at 468 nm (a) in ethanol (0.057 mM) and (b) adsorbed on a TiO₂ film showing a red shift indicative of interactions between the dye molecule and the semiconductor.

(a)

(b)