Fig. 1From: Efficient Dye-Sensitized Solar Cells Made from High Catalytic Ability of Polypyrrole@Platinum Counter ElectrodeCyclic voltammograms for the PPy@Pt coated on FTO substrate with scan rate of 30 mV·s−1 (a); the SEM images of PPy (b) and PPy@Pt hybrid electrode (c, d) Back to article page