Two-step processed efficient perovskite solar cells via improving perovskite/PTAA interface using solvent engineering in PbI<sub>2</sub> precursor

Two-step processed efficient perovskite solar cells via improving perovskite/PTAA interface using solvent engineering in PbI₂ precursor

Long Cao-Yu, Wang Ning, Huang Ke-Qing, Li Heng-Yue, Liu Biao, Yang Jun-Liang^‡

Dark I–V curves of electron-only devices for perovskite films derived from (a) DMSO-0%, (b) DMSO-5%, (c) DMSO-10%, and (d) DMSO-20%, respectively.