Isomerization strategy on non-fullerene guest acceptor enables stable and efficient organic solar cells

A research group led by Prof. Ge Ziyi at the Ningbo Institute of Materials Technology and Engineering (NIMTE) of the Chinese Academy of Sciences (CAS) has developed two isomeric non-fullerene acceptors and doped them into the D18:N3-based binary organic solar cells (OSCs) as a third component, resulting in highly efficient rigid and flexible ternary OSCs with power conversion efficiency (PCE) of 19.3% and 18.0%, respectively.