18.9% Efficient Organic Solar Cells Based on n-Doped Bulk-Heterojunction and Halogen-Substituted Self-Assembled Monolayers as Hole Extracting Interlayers - Lin,Y; Zhang,Y; Zhang,J; Marcinskas,M; Malinauskas,T; Magomedov,A; Nugraha,MI; Kaltsas,D; Naphade,DR; Harrison,GT; El-Labban,A; Barlow,S; et al. (ADVANCED ENERGY MATERIALS, 2022)