Perovskite solar cell
Rs [Ω] R1 [Ω] R2 [Ω]
(a) pristine 14.73 43.16 50.76
(b) with 127 nm nanopatterned TiO2 layer 14.64 33.61 41.25
(c) with 0.10 wt% PCBM on perovskite layer 14.71 29.83 37.34
(d) with 127 nm nanopatterned TiO2 layer and 0.10 wt% PCBM on perovskite layer 13.68 21.02 25.14