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Highly stretchable and high-mobility simiconducting nanofibrous blend films for fully stretchable organic transistors

高拉伸高迁移率半导体纳米纤维共混薄膜应用于完 全可拉伸有机晶体管

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Abstract

Stretchable organic field-effect transistors (OFETs) are fundamental components of organic integrated circuits and wearable biosensors. Stretchable organic semiconductors are core materials to realize high-mobility stretchable OFETs. Achieving polymer semiconductors with both high mobility and high stretchability is an urgent challenge. In this work, high-mobility stretchable semiconducting blend films were prepared by blending a polymer semiconductor with an elastomer. The polymer forms unique nanofibers through the nanoconfinement effect. The as-prepared blend films have low crystallinity and high aggregation degree, resulting in high stretchability and high mobility. Remarkably, the fully stretchable organic transistors exhibit hole maximum mobilities of 2.74 and 2.53 cm2 V−1 s−1 at 0% and 100% strain, respectively. Even at 150% strain, stretchable transistors have a maximum mobility of 1.57 cm2 V−1 s−1. The stretchable transistors show high mechanical robustness during 1000 stretching-releasing cycles at 30% strain.

摘要

可拉伸有机场效应晶体管(OFETs)是有机集成电路和可穿戴生 物传感器的基本组成部分. 可拉伸有机半导体是实现高迁移率可拉伸 OFETs的核心材料. 目前实现高迁移率高拉伸聚合物半导体仍面临挑 战. 在此, 我们通过混合聚合物半导体和弹性体, 制备了高迁移率可拉 伸的半导体共混薄膜. 通过纳米限域效应, 聚合物形成独特的纳米纤维. 半导体薄膜具有低结晶度和高聚集度, 因此该纤维共混薄膜具有高迁 移率和高拉伸性. 我们制备的完全可拉伸的有机晶体管在0%和100%应 变下空穴迁移率分别为2.74和2.53 m2 V−1 s−1. 即使在150%应变下, 可拉 伸晶体管的迁移率也高达1.57 cm2 V−1 s−1. 可拉伸晶体管在30%应变下 的1000个拉伸/释放周期中表现出了高的机械鲁棒性.

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Acknowledgements

This work was supported by the Ministry of Science and Technology of China (2018YFA0703200), the National Natural Science Foundation of China (51973154) and the Natural Science Foundation of Tianjin (20JCZDJC00680).

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Authors and Affiliations

  1. Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China

    Fuming Wu  (邬福明), Yixuan Liu  (刘忆旋), Jun Zhang  (张鋆), Xiangxiang Li  (李湘湘), Hui Yang  (杨辉) & Wenping Hu  (胡文平)

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  1. Fuming Wu  (邬福明)
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  2. Yixuan Liu  (刘忆旋)
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  3. Jun Zhang  (张鋆)
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  4. Xiangxiang Li  (李湘湘)
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  5. Hui Yang  (杨辉)
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  6. Wenping Hu  (胡文平)
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Contributions

Yang H conceived and supervised this project. Wu F performed the material preparation and characterization. Wu F conducted the device characterization. Wu F, Liu Y, Zhang J, and Li X wrote the paper. All authors contributed to the general discussion.

Corresponding author

Correspondence to Hui Yang  (杨辉).

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Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary information

Supporting data are available in the online version of the paper.

Fuming Wu is a PhD student under the supervision of Prof. Hui Yang at the Department of Chemistry, School of Science, Tianjin University. His research interest is stretchable electronic devices.

Hui Yang is a professor at the Department of Chemistry, School of Science, Tianjin University. He received his PhD from Shandong University in 2012. He subsequently joined Prof. Xi Zhang’s group as a postdoctoral fellow at the Department of Chemistry, Tsinghua University. Since 2014, he has been a research fellow under the supervision of Prof. Xiaodong Chen at the School of Materials Science and Engineering, Nanyang Technological University, Singapore. His research interests focus on flexible and stretchable electronic devices by various flexible micronano fabrication technology for stable human electrophysiological signal sensing and intelligent e-healthcare.

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Wu, F., Liu, Y., Zhang, J. et al. Highly stretchable and high-mobility simiconducting nanofibrous blend films for fully stretchable organic transistors. Sci. China Mater. 66, 1891–1898 (2023). https://doi.org/10.1007/s40843-022-2331-8

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  • DOI: https://doi.org/10.1007/s40843-022-2331-8

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