Synthesis and characterization of thieno[3,2-b]thiophene-isoindigo-based copolymers as electron donor and hole transport materials for bulk-heterojunction polymer solar cells
作者:Xiaofeng Xu、Ping Cai、Yong Lu、Ng Siu Choon、Junwu Chen、Xiao Hu、Beng S. Ong
DOI:10.1002/pola.26400
日期:2013.1.15
A novel class of thieno[3,2‐b]thiophene (TT) and isoindigo based copolymers were synthesized and evaluated as electrondonor and holetransportmaterials in bulk‐heterojunction polymersolarcells (BHJ PSCs). These π‐conjugated donor‐acceptor polymers were derived from fused TT and isoindigo structures bridged by thiophene units. The band‐gaps and the highest occupied molecular orbital (HOMO) levels