Increased Open‐Circuit Voltage of Organic Solar Cells by Reduced Donor‐Acceptor Interface Area. (24th March 2014)

• Record Type: Journal Article
• Authors: Vandewal, Koen; Widmer, Johannes; Heumueller, Thomas; Brabec, Christoph J.; McGehee, Michael D.; Leo, Karl; Riede, Moritz; Salleo, Alberto
• Is Part Of: Advanced materials. Volume 26:Number 23(2014)
• Page Start: 3839
• Page End: 3843
• Publication Date: 2014-03-24
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201400114
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="adma201400114-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>The charge carrier lifetime</bold> in small molecule: C₆₀ photovoltaic devices is increased by reducing the physical interface area availabe for recombination. For donor contents below 10%, the gain in open‐circuit voltage (<italic>V_oc</italic>) depends logarithmically on the interface area while the energy of the interfacial charge‐transfer state <italic>E</italic>_CT remains invariant. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pghmfn3vt4" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>