The power-conversion efficiency(PCE)of single-junction organic solar cells(OSCs)has exceeded 16%thanks to the development of non-fullerene acceptor materials and morphological optimization of active l
Although fullerene bis-adducts have been widely used in tandem and ternary polymer solar cells for their high LUMO energy level and good performance,the degradation behavior of this class of solar cel
All-polymer solar cells(All-PSCs)offer several distinct merits including superior thermal stability and flexibility.Here,we report a novel polymer acceptor PJ1 that exhibits a narrow band gap around 1