Media type: E-Article Title: Increased Open‐Circuit Voltage of Organic Solar Cells by Reduced Donor‐Acceptor Interface Area Contributor: Vandewal, Koen; Widmer, Johannes; Heumueller, Thomas; Brabec, Christoph J.; McGehee, Michael D.; Leo, Karl; Riede, Moritz; Salleo, Alberto imprint: Wiley, 2014 Published in: Advanced Materials Language: English DOI: 10.1002/adma.201400114 ISSN: 0935-9648; 1521-4095 Origination: Footnote: