A diketopyrrolopyrrole and benzothiadiazole based small molecule electron acceptor: design, synthesis, characterization and photovoltaic properties

Abstract

A novel solution-processable electron acceptor based on diketopyrrolopyrrole and benzothiadiazole (<bold>N6</bold>), exhibited excellent solubility and thermal stability, and afforded 1.16% power conversion efficiency with high open-circuit voltage (1.08 V).