TiCl₄ Pretreatment and Electrodeposition Time Investigations of ZnO Photoelectrodes Preparation for Dye Sensitized Solar Cells

Figure 2

SEM images of TiCl₄ pretreatment used on FTO or not. (a) TiCl₄ pretreatment. (b) Without TiCl₄ pretreatment. (c) and (d) The amplification figure of (a) and (b), respectively.

(a)

(b)

(c)

(d)