Dibenzo[<i>b</i>,<i>def</i>]chrysene Derivatives: Solution-Processable Small Molecules that Deliver High Power-Conversion Efficiencies in Bulk Heterojunction Solar Cells

Abstract

Soluble, electroactive derivatives based upon dibenzo[b,def]chrysene are introduced. These compounds do not chemically react with fullerenes, enabling the preparation of solution-processed solar cells based on small molecule blends. Device power conversion efficiencies of 2.25% are described and a correlation between processing conditions, film morphology, and device efficiencies is demonstrated.