Superior Photocurrent of Quantum Dot Sensitized Solar Cells Based on PbS : In/CdS Quantum Dots

Figure 2

SEM images of the top view for the nanocrystalline TiO₂ film (a) and TiO₂ deposited by PbS : In film (b); the cross-section view of the TiO₂ deposited by PbS : In film (c); the inset in parts (b) shows the corresponding EDS spectra.

(a)

(b)

(c)