An azafullerene acceptor for organic solar cells†
Abstract
A novel azafullerene derivative, OQThC59N, was prepared and used as the acceptor material in solution-processed bulk heterojunction organic solar cells. Possessing a relatively high LUMO level, OQThC59N gives a high open-circuit voltage of 0.78 V and a power conversion efficiency of 4.09% in fullerene:P3HT solar cells.