Low energy loss (0.42 eV) and efficiency over 15% enabled by non-fullerene acceptors containing N-bis(trifluoromethyl)phenylbenzotriazole as the core in binary solar cells

Binary OSCs with an efficiency as high as 15.17% are prepared using a new acceptor with a 3,5-bis(trifluoromethyl)phenyl as the N-substituent in a benzotriazole core and a donor polymer.