Perovskite Thin Film Solar Cells Based on Inorganic Hole Conducting Materials

Figure 4

(a) AFM roughness image of a NiO nanocrystal film on FTO. (b) Bright-field TEM image of a sample of NiO NCs with the corresponding diffraction pattern (inset). (c) Typical J–V curves of the perovskite solar cells with different NiO hole transport layers and PEDOT:PSS. Reprinted with permission from [25].

(a)

(b)

(c)