On March 17, 2025, Zhou's team published a paper entitled "Two-Dimensional Zeolitic Imidazolate Framework Based Optoelectronic Synaptic Transistor" in the Journal of Physical Chemistry Letters. This research paper explores optoelectronic synaptic transistor. Ziqi Jia is the first author. Ye Zhou, Guanglong Ding and Chi-Ching Kuo are the corresponding authors.

Neuromorphic computing systems that integrate memory and computation offer a solution to the limitations of traditional von Neumann architectures. Optoelectronic synaptic transistors, responding to both optical and electrical signals, enable multifunctional operation with low power consumption. However, challenges such as short data retention and low processing efficiency remain. This study presents an optoelectronic synaptic transistor utilizing two-dimensional (2D) MoS₂, 2D zeolitic imidazolate framework (ZIF) Zn₂(bim)₄, and gold (Au) nanoparticles (NPs) as semiconductor, tunneling layer, and floating gate materials, respectively. By adjusting the tunneling layer thickness, the charge-blocking capacity of Zn₂(bim)₄is modulated, improving long-term data retention. The optoelectronic properties of MoS₂and the charge-trapping ability of Au NPs enable the transistor to mimic synaptic behaviors such as postsynaptic current (PSC), long-term potentiation (LTP), and transition from short-term to long-term memory (STM-LTM). This device can also be integrated into an artificial neural network (ANN) for smart healthcare applications, achieving 88.1% accuracy in electrocardiogram classification through optoelectronic dual-mode stimulation. The research was supported by the National Natural Science Foundation of China, the Basic and Applied Basic Research Foundation of Guangdong Province, the Science and Technology Innovation Commission of Shenzhen, RSC Researcher Collaborations grant, the State Key Laboratory of Radio Frequency Heterogeneous Integration (Independent Scientific Research Program), and the NTUT-SZU Joint Research Program.

Original link:https://pubs.acs.org/doi/full/10.1021/acs.jpclett.5c00009