“…ITO is the most commonly used anode electrode in the inverted PSCs due to its transparency in the visible region, ease of patterning and high electrical conductivity [16][17][18][19]. However, its rough surface creates pin holes leading leakage currents and surface states due to dangling bonds on the surface that causes recombination of charge carriers via trapping centers at the interface [20,21]. The work function of ITO is reported to change from 4.5 to 4.7 eV that is much lower than the HOMO level of donor material.…”