Effective Sol-Gel Nanocoatings on ZnO Electrodes for Suppressing Recombination in Dye-Sensitized Solar Cells
Figure 7
XPS spectra (a) in the Ti 2p region for the uncoated and the TiO2-coated electrodes and (b) in the Zr 3d region for the uncoated and the ZrO2-coated electrodes.