title: Dithienylthienothiophenebisimide, a Versatile Electron-Deficient Unit for Semiconducting Polymers.
abstract: A novel electron-deficient building unit, dithienylthienothiophenebisimide, and its polymers (PTBIs) are reported. Organic photovoltaic (OPV) cells based on PTBIs as p-type material exhibit 8.0% efficiencies with open-circuit voltages higher than 1 V. Interestingly, PTBIs also function as n-type material in OPVs depending on the molecular structure. These polymers also exhibit p-channel, n-channel, and ambipolar behaviors in field-effect transistors.
authors.affiliation: RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.
authors.forename: Masahiko
authors.initials: M
authors.lastname: Saito
authors.affiliation: RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.
authors.forename: Itaru
authors.initials: I
authors.lastname: Osaka
authors.affiliation: Graduate School of Advanced Integration Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, 263-8522, Japan.
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Suda
authors.affiliation: Graduate School of Advanced Integration Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, 263-8522, Japan.|Molecular Chirality Research Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, 263-8522, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yoshida
authors.affiliation: RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Takimiya
keywords: dithienylthienothiophenebisimide; semiconducting polymers; solar cells; transistors