Spatially nanoconfined N-type polymer semiconductors for stretchable ultrasensitive X-ray detection

Yangshuang Bian, Kai Liu, Yang Ran, Yi Li, Yuanhong Gao, Zhiyuan Zhao, Mingchao Shao, Yanwei Liu, Junhua Kuang, Zhiheng Zhu, Mingcong Qin, Zhichao Pan, Mingliang Zhu, Chenyu Wang, Hu Chen, Jia Li, Xifeng Li, Yunqi Liu and Yunlong Guo ()
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Yangshuang Bian: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Kai Liu: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Yang Ran: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Yi Li: Shanghai University
Yuanhong Gao: Shenzhen Graduate School, Peking University
Zhiyuan Zhao: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Mingchao Shao: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Yanwei Liu: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Junhua Kuang: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Zhiheng Zhu: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Mingcong Qin: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Zhichao Pan: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Mingliang Zhu: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Chenyu Wang: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Hu Chen: Shanghai University
Jia Li: Shenzhen Technology University
Xifeng Li: Shanghai University
Yunqi Liu: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences
Yunlong Guo: Key Laboratory of Organic Solids, Institute of Chemistry Chinese Academy of Sciences

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Polymer semiconductors are promising candidates for wearable and skin-like X-ray detectors due to their scalable manufacturing, adjustable molecular structures and intrinsic flexibility. Herein, we fabricated an intrinsically stretchable n-type polymer semiconductor through spatial nanoconfinement effect for ultrasensitive X-ray detectors. The design of high-orientation nanofiber structures and dense interpenetrating polymer networks enhanced the electron-transporting efficiency and stability of the polymer semiconductors. The resultant polymer semiconductors exhibited an ultrahigh sensitivity of 1.52 × 104 μC Gyair−1 cm−2, an ultralow detection limit of 37.7 nGyair s−1 (comparable to the record-low value of perovskite single crystals), and polymer film X-ray imaging was achieved at a low dose rate of 3.65 μGyair s−1 (about 1/12 dose rate of the commercial medical chest X-ray diagnosis). Meanwhile, the hybrid semiconductor films could sustain 100% biaxial stretching strain with minimal degeneracy in photoelectrical performances. These results provide insights into future high-performance, low-cost e-skin photoelectronic detectors and imaging.

Date: 2022
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DOI: 10.1038/s41467-022-34968-1

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