Low-bandgap donor–acceptor polymers for photodetectors with photoresponsivity from 300 nm to 1600 nm

Jinfeng Han; Ji Qi; Xiuping Zheng; Yukun Wang; Liuyong Hu; Chang Guo; Yang Wang; Yuning Li; Dongge Ma; Wenqiang Qiao; Zhi Yuan Wang

doi:10.1039/C6TC05031J

Low-bandgap donor–acceptor polymers for photodetectors with photoresponsivity from 300 nm to 1600 nm†

Jinfeng Han,^ab Ji Qi,^ab Xiuping Zheng,^ab Yukun Wang,^ab Liuyong Hu,^ab Chang Guo,^c Yang Wang,^d Yuning Li,^c Dongge Ma,^a Wenqiang Qiao*^a and Zhi Yuan Wang*^ae

Author affiliations

* Corresponding authors

^a State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China

^b University of Chinese Academy of Sciences, Beijing 100049, P. R. China

^c Department of Chemical Engineering and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada

^d The College of Chemistry and Molecular Engineering, Center of Computational Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China

^e Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B, Canada
E-mail: wayne_wang@carleton.ca

Abstract

A novel donor unit dithienobenzotrithiophen (DTBTT) was designed and utilized in the synthesis of a series of donor–acceptor (D–A) polymers with the thienoisoindigo-based acceptor. The relationships between the structure of polymers and the absorption spectra, electrochemistry properties, hole mobility, and photovoltaic properties of these polymers have been studied. The results showed that low-bandgap D–A polymers containing DTBTT are suitable for use in broadband polymer photodetectors. Polymer photodetectors exhibited a specific detectivity (D*) in the order of 10¹² Jones, low dark current and photoresponsivity at the wavelengths from 300 to 1600 nm.

Journal of Materials Chemistry C

Low-bandgap donor–acceptor polymers for photodetectors with photoresponsivity from 300 nm to 1600 nm†

Abstract

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Low-bandgap donor–acceptor polymers for photodetectors with photoresponsivity from 300 nm to 1600 nm

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