Effects of π-conjugated side chains on properties and performances of photovoltaic copolymers

Highlights • We synthesize three types of copolymers and investigate their properties. • Three copolymers are compared with our previous main-chain type copolymer. • Highest power conversion efficiency reaches 4.49%. • Conjugated side-chain with an electron-deficient group enhances the performance....
Ausführliche Beschreibung

Highlights • We synthesize three types of copolymers and investigate their properties. • Three copolymers are compared with our previous main-chain type copolymer. • Highest power conversion efficiency reaches 4.49%. • Conjugated side-chain with an electron-deficient group enhances the performance. Ausführliche Beschreibung