Photodual-Responsive Anthracene-Based 2D Covalent Organic Framework for Optoelectronic Synaptic Devices.

Area of Science:

• Materials Science
• Nanotechnology
• Neuroscience

Background:

• Neuromorphic computing requires efficient synaptic devices integrating perception and computation.
• Optoelectronic synaptic devices are key for advanced sensory processing.
• 2D covalent organic frameworks (COFs) are underexplored for optoelectronic synaptic applications.

Purpose of the Study:

• To develop and investigate a novel optoelectronic synaptic device utilizing 2D COFs.
• To explore the optoelectronic and memristive properties of the COF-based device.
• To demonstrate the device's capability in visual computational tasks.

Main Methods:

• Fabrication of an Al/COF-DaTp/ITO device using an anthracene-based 2D COF (COF-DaTp) film via a room-temperature interface-confined strategy.
• Characterization of the device's optoelectronic resistive switching and history-dependent memristive behavior.
• Evaluation of the device's performance in optical sensing, image denoising, and recognition.

Main Results:

• The device exhibited dual optoelectronic modulation with 32 distinct photoconductive states.
• Significant history-dependent memristive behavior was observed, showing 32 conductive states.
• The device successfully performed optical sensing and basic image denoising/recognition, improving accuracy and reducing training epochs.

Conclusions:

• The 2D COF-DaTp based optoelectronic synaptic device demonstrates promising dual optoelectronic modulation and memristive properties.
• The device enables simultaneous optical sensing and visual computation, including image denoising and recognition.
• This research paves the way for 2D COF applications in advanced visual computational processing and neuromorphic systems.