Research Article

Heterovalent Cation Substitutional and Interstitial Doping in Semiconductor Sensitizers for Quantum Dot Cosensitized Solar Cell

Figure 1

SEM images of TiO2/Bi-doped-PbS, TiO2/Bi-doped-PbS/CdS, TiO2/Ag-doped-PbS, and TiO2/Ag-doped-PbS/CdS. Insets in images are corresponding EDS spectra.
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