Electrochemically Exfoliated Amorphous TaIrTe <sub>4</sub> Nanosheets for Bidirectional Optical Neuromorphic Devices
, enabling sensitive electrical readout. Upon optical stimulation, the devices generate self-powered, persistent photocurrents. Wavelength-selective excitation between 405 nm and 638 nm produces reversible conductance potentiation and depression, realizing fully optical and bidirectional synaptic plasticity with ultralow energy consumption (< 5.65 pJ per pulse). Neuromorphic network simulations incorporating the experimentally extracted dynamics achieve 92.1% on the MNIST dataset. These results demonstrate a scalable platform for producing amorphous vdW nanosheets and show that crystalline-to-amorphous conversion enables light-programmable signal processing and energy-efficient intelligent hardware.
Authors
- Y Li (ORCID: https://orcid.org/0000-0002-1282-5312)
- Yanqiu Xue
- Yi Liu (ORCID: https://orcid.org/0009-0005-9370-2785)
- J Q Xu (ORCID: https://orcid.org/0000-0003-0062-5724)
- Wuqing Fang
- Jianxian He
- Zice Zhao
- Haoran Mu
- Shenghuang Lin (ORCID: https://orcid.org/0000-0001-9552-4680)
- Haibin Li
- Jian Yuan
- Ming Xiao (ORCID: https://orcid.org/0000-0003-2018-4807)
- Tongsheng Chen
- Guangyu Zhang
Institutions
- Sun Yat-sen University (CN)
- Huaibei Normal University (CN)
- South China Normal University (CN)
- Wuhan University of Technology (CN)
- Dongguan University of Technology (CN)
- Songshan Lake Materials Laboratory (CN)
Publication Details
- Journal
- Small
- Published
- 2026-05-08
- DOI
- https://doi.org/10.1002/smll.73719
- Primary Topic
- Advanced Memory and Neural Computing
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing