Figure 4

Schematic of a quantum-dot-sensitized solar cell (QDSSC). An array of ZnO nanowires, grown vertically from an FTO/glass substrate and decorated with CdSe quantum dots, serves as the photoanode. A second FTO/glass substrate, coated with a 100 Å layer of Pt, is the photocathode. The space between the two electrodes is filled with a liquid electrolyte and the cell is illuminated from the bottom (Reprinted with permission from Ref. [98]. Copyright 2007, American Chemical Society.)