Interconnected TiO2 Nanowire Networks for PbS Quantum Dot Solar Cell Applications

Figure 2

(a) A cartoon showing the loosely packed TiO₂ nanowire film fabricated using the dip-coating process. (b) FTIR spectrum of TiO₂ nanowire film dip-coated on a glass slide before and after thermal annealing. (c) SEM image showing the overview of the porous TiO₂ nanostructure. (d) High-resolution second-electron SEM image showing the porous interconnected TiO₂ nanowire network structure after annealing.

(a)

(b)

(c)

(d)