Fabrication and Characterization of CH₃NH₃PbI₃ Perovskite Solar Cells Added with Polysilanes

Figure 4

Optical microscopy images of (a) CH₃NH₃PbI₃ solar cells with (b) PMPS, (c) PPS, and (d) DPPS.

(a)

(b)

(c)

(d)