New Components for Dye-Sensitized Solar Cells

Figure 4

Photoaction spectra on transparent TiO₂ of (a) anthocyanine raw extracts from eggplant (purple), red radicchio (red), Giacchè red grapes (black), and Nero d’Avola red grapes (brown); (b) betalains from red turnip (black) and wild prickly pear (red). LiI/I₂ 0.5 M/0.05 M in ACN was used as a redox electrolyte.

(a)

(b)