A novel wide bandgap conjugated polymer (2.0Â eV) based on bithiazole for high efficiency polymer solar cells

A novel wide bandgap conjugated polymer PTZ6 with an Eg of 2.0 eV is designed and synthesized for photovoltaic application. PSCs based on PTZ6: PC71BM and PTZ6: ITIC blend films exhibit high PCEs of up to 8.1% and 10.3%, respectively, under the illumination of AM 1.5 G, 100 mW cm−2.187