Comparative Study between Dye-Sensitized and CdS Quantum-Dots-Sensitized TiO₂ Solar Cells Using Photoinduced Absorption Spectroscopy

Figure 6

PIA spectra of N719 adsorbed at a nanostructured TiO₂ film. (a) In air; (b) in the presence of electrolyte, 0.7 M LiI and 0.05 M I₂ in 3MPN. The spectra were recorded using blue light (460 nm) excitation (42 mW cm⁻²) with a modulation frequency of 9 Hz. With redox electrolyte (0.7 M LiI and 0.05 M I₂ in 3MPN); 𝑓=193 Hz.