Chemically driven supramolecular self-assembly of porphyrin donors for high-performance organic solar cells

Abstract

Supramolecular self-assembly of a novel acceptor–π–porphyrin–π–acceptor compound driven by intermolecular sulfur–sulfur interactions leads to the formation of J-aggregates composed of helical nanowire structures. These nanowires have exhibited interesting optical activity, and when utilized as a molecular electron donor with a fullerene acceptor in bulk heterojunction organic solar cells, a high photovoltaic power conversion efficiency of over 8% has been achieved.