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- Title
Approaching disorder-tolerant semiconducting polymers.
- Authors
Yan, Xinwen; Xiong, Miao; Deng, Xin-Yu; Liu, Kai-Kai; Li, Jia-Tong; Wang, Xue-Qing; Zhang, Song; Prine, Nathaniel; Zhang, Zhuoqiong; Huang, Wanying; Wang, Yishan; Wang, Jie-Yu; Gu, Xiaodan; So, Shu Kong; Zhu, Jia; Lei, Ting
- Abstract
Doping has been widely used to control the charge carrier concentration in organic semiconductors. However, in conjugated polymers, n-doping is often limited by the tradeoff between doping efficiency and charge carrier mobilities, since dopants often randomly distribute within polymers, leading to significant structural and energetic disorder. Here, we screen a large number of polymer building block combinations and explore the possibility of designing n-type conjugated polymers with good tolerance to dopant-induced disorder. We show that a carefully designed conjugated polymer with a single dominant planar backbone conformation, high torsional barrier at each dihedral angle, and zigzag backbone curvature is highly dopable and can tolerate dopant-induced disorder. With these features, the designed diketopyrrolopyrrole (DPP)-based polymer can be efficiently n-doped and exhibit high n-type electrical conductivities over 120 S cm−1, much higher than the reference polymers with similar chemical structures. This work provides a polymer design concept for highly dopable and highly conductive polymeric semiconductors. In conjugated polymers, n-doping is often limited by the tradeoff between doping efficiency and charge carrier mobilities, since dopants often randomly distribute within polymers, leading to significant structural and energetic disorder. Here, the authors screen a large number of polymer building block combinations and explore the possibility of designing n-type conjugated polymers with good tolerance to dopant-induced disorder.
- Subjects
CONJUGATED polymers; CHARGE carrier mobility; ORGANIC semiconductors; POLYMERS; BLOCK copolymers; CARRIER density; ELECTRIC conductivity
- Publication
Nature Communications, 2021, Vol 12, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-021-26043-y