Robust Intrinsically Stretchable Organic Photodetectors Enabled by High-molecular-weight Conjugated Polymer Fibrils

He-Bing Nie; Lu Hao; Jing-Chuan Chen; Zhi-Yuan Yang; Xue-Fei Wu; Zhi-Qin Xia; Wan-Cheng Yu; Xue-Chen Jiao; Wen-Kai Zhong; Fei Huang

doi:10.1007/s10118-026-3746-y

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Robust Intrinsically Stretchable Organic Photodetectors Enabled by High-molecular-weight Conjugated Polymer Fibrils

RESEARCH ARTICLE | Updated：2026-09-23

- Robust Intrinsically Stretchable Organic Photodetectors Enabled by High-molecular-weight Conjugated Polymer Fibrils
- Chinese Journal of Polymer Science Vol. 44, Issue 10, Pages: 3297-3307(2026)
- Affiliations：
  
  a.Institute of Polymer Optoelectronic Materials and Devices, Guangdong Basic Research Center of Excellence for Energy and Information Polymer Materials, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
  b.Interdisciplinary Research Center for Chemical, Life and Health Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  c.Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley CA 94720, United States
  d.National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China
- Author bio：
  
  wuxuefei@iccas.ac.cn (X.F.W.)
  wkzhong@scut.edu.cn (W.K.Z.)
  msfhuang@scut.edu.cn (F.H.)
- Funds：
- DOI：10.1007/s10118-026-3746-y
  CLC：
- Received：21 December 2025，
  
  Revised：2026-05-13，
  
  Accepted：14 May 2026，
  
  Online First：22 August 2026，
  
  Published：05 October 2026
- Accepted：
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Nie, H. B.; Hao, L.; Chen, J. C.; Yang, Z. Y.; Wu, X. F.; Xia, Z. Q.; Yu, W. C.; Jiao, X. C.; Zhong, W. K.; Huang, F. Robust intrinsically stretchable organic photodetectors enabled by high-molecular-weight conjugated polymer fibrils. Chinese J. Polym. Sci. 2026, 44, 3297–3307

He-Bing Nie, Lu Hao, Jing-Chuan Chen, et al. Robust Intrinsically Stretchable Organic Photodetectors Enabled by High-molecular-weight Conjugated Polymer Fibrils[J]. Chinese Journal of Polymer Science, 2026, 44(10): 3297-3307.
Nie, H. B.; Hao, L.; Chen, J. C.; Yang, Z. Y.; Wu, X. F.; Xia, Z. Q.; Yu, W. C.; Jiao, X. C.; Zhong, W. K.; Huang, F. Robust intrinsically stretchable organic photodetectors enabled by high-molecular-weight conjugated polymer fibrils. Chinese J. Polym. Sci. 2026, 44, 3297–3307 DOI： 10.1007/s10118-026-3746-y.

He-Bing Nie, Lu Hao, Jing-Chuan Chen, et al. Robust Intrinsically Stretchable Organic Photodetectors Enabled by High-molecular-weight Conjugated Polymer Fibrils[J]. Chinese Journal of Polymer Science, 2026, 44(10): 3297-3307. DOI： 10.1007/s10118-026-3746-y.

摘要

High-molecular-weight conjugated polymer blends form entangled fibrillar networks in intrinsically stretchable organic photodetectors. The mechanically percolated fibrils dissipate strain and suppress cracking while maintaining continuous charge transport

thus enabling high toughness

about 80% fracture strain

and stable detectivity (about 10

Jones) under large deformations for optical communication and imaging.

Abstract

Intrinsically stretchable organic photodetectors (IS-OPDs) are highly attractive for applications such as skin-mounted wearables

soft robotics

and electronic textiles. However

simultaneously achieving mechanical robustness and stable optoelectronic functionality under high strain remains a challenge. Here

we demonstrate that the fibrillar

network morphology formed by high-molecular-weight conjugated polymer blends provides an effective pathway to overcome this limitation. The entangled

interconnected polymer fibrils establish a mechanically percolated network that efficiently dissipates strain energy and suppresses crack propagation

enabling a high fracture strain of about 80% and enhanced toughness. The fibrillar network also forms continuous charge transport pathways

resulting in improved carrier mobility and reduced trap density. Therefore

the IS-OPDs exhibit outstanding performance stability under large deformations

maintaining a high detectivity of about 10

Jones at strains above 40%

while enabling reliable optical communication and clear imaging capability even at 100% strain. Our study identifies a high-molecular-weight-driven fibrillar morphology as a key structural motif for mechanically robust IS-OPDs.

关键词

Keywords

references

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