Low-hygroscopic solvents enable ambient blade coating of efficient perovskite solar cells (opens in new tab)

Scalable manufacturing of high-efficiency perovskite solar cells (PSCs) requires blade coating not only of the perovskite layer, but also of other functional layers, including organoammonium halide surface passivation layers and self-assembled monolayers (SAMs), under ambient conditions. However, organoammonium iodides and SAMs are highly hygroscopic and prone to hydrolysis and desorption, respectively, and they are commonly processed from hygroscopic alcohol. As a result, despite its importa...