Synthesis and Application of New Ruthenium Complexes Containing β-Diketonato Ligands as Sensitizers for Nanocrystalline TiO₂ Solar Cells

Figure 5

Photocurrent action spectra obtained with complexes 1 (a), 2 (b), and 4 (c) attached to nanocrystalline TiO₂ film. The incident photon-to-current conversion efficiency is plotted as a function of wavelength. A sandwich type sealed cell configuration was used to measure this spectrum. The electrolyte composition was 0.6 M DMPII, 0.05 M I₂, and 0.1 M LiI in acetonitrile.