Factors influencing the performance of paintable carbon-based perovskite solar cells fabricated in ambient air
Xu Wei-Kang, Chen Feng-Xiang, Cao Gong-Hui, Wang Jia-Qi, Wang Li-Sheng
       

Surface SEM images of the perovskite films from (a) W/O-40, (b) CB-30, (c) TL-30, and (d) DE-30 PSCs. The scale bars represent 1 μ m .