New wide-bandgap D–A polymer based on pyrrolo[3,4-b] dithieno[2,3-f:3′,2′-h]quinoxalindione and thiazole functionalized benzo[1,2-b:4,5-b′]dithiophene units for high-performance ternary organic solar cells with over 16% efficiency

We have achieved a power conversion efficiency of 16.44% for the ternary polymer solar cell using a wide bandgap copolymer and two non-fullerene acceptors.