Effective Sol-Gel Nanocoatings on ZnO Electrodes for Suppressing Recombination in Dye-Sensitized Solar Cells
Figure 3
XPS spectra (a) in the Si 2p region for the uncoated and the SiO2-coated electrodes and (b) in the Nb 3d region for the uncoated and the Nb2O5-coated electrodes [2, 3].
