Alkyl chain engineering on a dithieno[3,2-b:2′,3′-d]silole-alt-dithienylthiazolo[5,4-d]thiazole copolymer toward high performance bulk heterojunction solar cells

Alkyl chain engineering on a dithieno[3,2-b:2′,3′-d]silole-alt-dithienylthiazolo[5,4-d]thiazole copolymer toward high performance bulk heterojunction solar cells