Wide‐Bandgap Benzodithiophene–Benzothiadiazole Copolymers for Highly Efficient Multijunction Polymer Solar Cells. (2nd July 2015) - Duan, Chunhui
Abstract Novel wide‐bandgap semiconducting polymers are designed and synthesized for multijunction polymer solar cell (PSC) applications. In single‐junction PSCs, BDT‐FBT‐2T exhibits efficiencies exceeding 6.5% for active layer thicknesses between 90 and 250 nm, with the highest efficiency of 7.7% at 100 and 250 nm. This enables tandem PSCs to be created with an efficiency of 8.9%.