The role of additive in diketopyrrolopyrrole-based small molecular bulk heterojunction solar cells.

Wang, Hongyu; Liu, Feng; Bu, Laju; Gao, Jun; Wang, Cheng; Wei, Wei; Russell, Thomas P · Adv Mater · 2013

basic_science · Level V

Where this comes from

Abstract

A new diketopyrrolopyrrole-based small molecule for solution-processed OPVs is synthesized. The chemical additive has a profound effect in refining the morphology and, thus, significantly increases the efficiencies of the devices. The role of the additive is characterized by various techniques and the additive-driven structure-property relationship is established, which reveals that the additive affects the crystallization, PCBM aggregation, and phase separation.

Medical subject headings