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 ‡
       

(a)–(d) Photovoltaic performance parameters of PSCs derived from DMSO-0%, DMSO-5%, DMSO-10%, and DMSO-20%, respectively. (e) Typical current density-voltage curves of PSCs measured under simulated AM1.5 sunlight of 100 mW/cm2. (f) Normalized PCE of PTAA and Spiro-OMeTAD-based PSCs, respectively.