Synthesis and photovoltaic properties of phthalocyanine end-capped copolymers with conjugated dithienylbenzothiadiazole-vinylene side chains

► Two novel phthalocyanine end-capped copolymers were synthesized and applied in PSCs. ► The soluble phthalocyanine derivatives were synthesized by employing the cheap materials. ► The copolymers show a broad absorption bands and a deep HOMO energy levels.