Thiophene-thiazolothiazole copolymers: significant impact of side chain composition on backbone orientation and solar
Itaru Osaka1, Masahiko Saito, Tomoyuki Koganezawa
1Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8527, Japan; Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, Chiyoda-ku, 102-0075, Japan; Emergent Molecular Function Research Group, RIKEN Center for Emergent Matter Science (CEMS) Wako, Saitama, 351-0198, Japan.
Abstract:
The backbone orientation in the thiophene-thiazolothiazole (TzTz) copolymer system can be altered by tuning of the alky side chain composition. We highlight that the orientation significantly impact their solar cell efficiency in particular when using thicker active layers.
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