Dithienylthienothiophenebisimide, a Versatile Electron-Deficient Unit for Semiconducting Polymers

Masahiko Saito; Itaru Osaka; Yosuke Suda; Hiroyuki Yoshida; Kazuo Takimiya

doi:10.1002/adma.201601373

Dithienylthienothiophenebisimide, a Versatile Electron-Deficient Unit for Semiconducting Polymers

Adv Mater. 2016 Aug;28(32):6921-5. doi: 10.1002/adma.201601373. Epub 2016 May 23.

Authors

Masahiko Saito¹, Itaru Osaka¹, Yosuke Suda², Hiroyuki Yoshida^{2

3}, Kazuo Takimiya¹

Affiliations

¹ RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.
² Graduate School of Advanced Integration Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, 263-8522, Japan.
³ Molecular Chirality Research Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, 263-8522, Japan.

PMID: 27214577
DOI: 10.1002/adma.201601373

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.

Keywords: dithienylthienothiophenebisimide; semiconducting polymers; solar cells; transistors.