Face-on crystallization in ambipolar organic mixed conductors enables homogeneous light-modulated artificial neurons

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ID: 316919
2026
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Abstract
Abstract Light-modulated artificial neurons are vital for clinical optic nerve repair and bionic robotics. Light-sensitive ambipolar organic mixed ionic-electronic conductors (OMIECs) allow for homogeneously integrated artificial neurons, free from issues such as voltage/resistance mismatch or digital-to-analog conversion. However, their development is constrained by a trade-off between ion and electron transport, which results in low figure-of-merit (μC*) values and P/N-mode imbalance. Here, through precise molecular weight tailoring, we develop an ambipolar OMIEC with a high face-on orientation ratio of 85.5% and a fourfold enhancement in backbone crystallinity. This approach simultaneously enhances vertical ionic transport and electron transport, enabling the synergetic optimization of electronic mobility and volumetric capacitance. The optimized material achieves high μC* values of 423.3 ± 17.3 F cm⁻¹ V⁻¹ s⁻¹ (N-type) and 359.8 ± 42.6 F cm⁻¹ V⁻¹ s⁻¹ (P-type). Using this OMIEC, we construct a homogeneous artificial neuron whose excitation/inhibition behaviors can be dually modulated by light and chemical environment, paving new paths for high-performance OMIECs in biological neural prosthetics and bionic machine vision systems.
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openalex_W7164209636 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Y Zhang, Shijie Wang, Guangyu Qi, Xinmei Cai, Sen Zhang, Bo Wang, Chao Zhao, Yong Han, Qunping Fan, Laili Wang, Wei Ma
Journal national science review
Year 2026
DOI
10.1093/nsr/nwag341
URL
https://doi.org/10.1093/nsr/nwag341
Keywords Keywords not found

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