Enhanced open-circuit voltage in polymer solar cells by dithieno[3,2-b:2′,3′-d]pyrrole N-acylation

Wouter Vanormelingen, Jurgen Kesters, Pieter Verstappen, Jeroen Drijkoningen, Julija Kudrjasova, Simplice Koudjina, Vincent Liégeois, Benoît Champagne, Jean Manca, Laurence Lutsen, Dirk Vanderzande, Wouter Maes