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- Title
A Centrosymmetric Organic Semiconductor with Donor–Acceptor Interaction for Highly Photostable Organic Transistors.
- Authors
Zhang, Haoquan; Hu, Yongxu; Chen, Xiaosong; Yu, Li; Huang, Yinan; Wang, Zhongwu; Wang, Shuguang; Lou, Yunpeng; Ma, Xiaonan; Sun, Yajing; Li, Jie; Ji, Deyang; Li, Liqiang; Hu, Wenping
- Abstract
Molecule design of organic semiconductors (OSCs) for eliminating photoresponse and maintaining high charge mobility concurrently is beneficial to realize intrinsically photostable and high‐performance organic field‐effect transistors (OFETs), which has never been reported. Here, a novel organic semiconductor TFP‐TT‐TPA with a centrosymmetric structure is synthesized. Remarkably, OFETs with TFP‐TT‐TPA show negligible photoresponse under light intensity up to 170.4 mW cm−2 (higher than sunlight intensity, about 138 mW cm−2), which ensures that the devices can work stably under sunlight. Through the single‐crystal structure and exciton dynamics analysis, it is found that the specific structure design can make strong intermolecular D–A interaction that occurs in the aggregate state, which facilitates the process of exciton quenching and thus enables the photostable OFETs. This study provides a new strategy for the design of organic semiconductors with intrinsic photostability and the construction of photostable organic optoelectronic devices for applications in light environment.
- Subjects
ORGANIC semiconductors; ORGANIC field-effect transistors; TRANSISTORS; SEMICONDUCTOR design; OPTOELECTRONIC devices; INTERMOLECULAR interactions
- Publication
Advanced Functional Materials, 2022, Vol 32, Issue 20, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202111705