title: Thiophene-thiazolothiazole copolymers: significant impact of side chain composition on backbone orientation and solar cell performances.
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.
authors.affiliation: Department 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.
authors.forename: Itaru
authors.initials: I
authors.lastname: Osaka
authors.forename: Masahiko
authors.initials: M
authors.lastname: Saito
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Koganezawa
authors.forename: Kazuo
authors.initials: K
authors.lastname: Takimiya
mesh_terms: D011108:Polymers / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry; D012993:Solar Energy; D013844:Thiazoles / Q000737:chemistry*; D013876:Thiophenes / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry; D014173:Transistors, Electronic
chemical_list: D011108:Polymers; D011137:Polystyrenes; D013844:Thiazoles; D013876:Thiophenes; D017971:Tin Compounds; C533756:poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate); C109984:indium tin oxide
keywords: orientation; semiconducting polymers; side chain; solar cells; thiazolothiazole