A-D-A-type S,N-heteropentacenes: next-generation molecular donor materials for efficient vacuum-processed organic solar cells.

Mishra, Amaresh; Popovic, Dusko; Vogt, Astrid; Kast, Hannelore; Leitner, Tanja; Walzer, Karsten; Pfeiffer, Martin; Mena-Osteritz, Elena et al. · Adv Mater · 2014

basic_science · Level V

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Abstract

A new class of acceptor-substituted S,N-heteropentacenes is developed for vacuum-processed organic solar cells, providing encouraging power conversion efficiencies of up to 6.5%. Atomic force microscopy (AFM) investigations give a direct correlation between the blend film morphology and the photovoltaic parameters, such as short-circuit current density (JSC ) and fill factor (FF).