Self n-doped [6,6]-phenyl-C61-butyric acid 2-((2-(trimethylammonium)ethyl)-(dimethyl)ammonium) ethyl ester diiodides as a cathode interlayer for inverted polymer solar cells

Abstract

Among alcohol soluble self n-doped fullerene ammonium derivatives, the title fullerene showed the best solvent resistance and inverted polymer solar cells retained high efficiency at 82 nm of this interlayer.