The Function of TiO₂ with Respect to Sensitizer Stability in Nanocrystalline Dye Solar Cells

Figure 4

Photodegradation in photocurrent images of four regularly operating nanocrystalline TiO₂ solar cells. Sensitization with N3-dye and illumination with simulated solar light in a round central areas only. Illumination periods: (a) 1008 hours; (b) 336 hours; (c) 1248 hours; (d) 1248 hours.

(a)

(b)

(c)

(d)