Boosting performance of inverted organic solar cells by using a planar coronene based electron-transporting layer

An alcohol-soluble, low-temperature processable and relatively thickness-insensitive organic CDIN-based electron-transporting layer (ETL) has been exploited to effectively enhance the photovoltaic performance of various inverted organic photovoltaics (OPVs). Owing to its discotic geometry endowed with strong face-on π-π stacking in solid state and better compatibility to the constituent organic photoactive components, a high PCE of 11.17% can be achieved in the state-of-the-art fullerene-based OPVs.207