Brandt, Rasmus Guldbæk, Zhang, Fei, Andersen, Thomas Rieks, Angmo, Dechan, Shi, Minmin, Gurevich, Leonid, Krebs, Frederik C., Andreasen, Jens Wenzel, Yu, Donghong. The Royal Society of Chemistry; 2016. Roll coated large area ITO- and vacuum-free all organic solar cells from diketopyrrolopyrrole based non-fullerene acceptors with molecular geometry effects.