Annealing Effect on Photovoltaic Performance of CdSe Quantum-Dots-Sensitized TiO₂ Nanorod Solar Cells

Figure 4

Optical absorption spectra of CdSe-TiO₂ nanostructure samples before (a) and after annealing at 100°C (b), 200°C (c), 300°C (d), and 400°C (e).