Morphology control of planar heterojunction perovskite solar cells with fluorinated PDI films as organic electron transport layer

Fluorinated perylene diimide (FPDI) was used as novel organic electron transport material in planar heterojunction perovskite solar cells. The PCE of the best device reached 7.93% after optimizing the perovskite film morphology via controlling the FPDI film morphology with short time solvent vapor annealing.110