2D Semiconductor‐Based Optoelectronics for Artificial Vision

Abstract

Artificial retina technologies aim to restore visual function by mimicking the natural processes of the eye. These biomimetic devices can convert light into electrical signals that the brain can interpret as visual information, bypassing damaged or non‐functional cells of the eye. To be effective, these devices should possess high sensitivity to light, high spatial resolution, biocompatibility, power efficiency, and so on. Recently, 2D semiconductor materials have appeared as a promising candidate for artificial retinal devices, thanks to their excellent optoelectronic properties, ultrathin body, flexible nature, and biocompatibility. Here the recent developments in the field of 2D semiconductors‐based optoelectronics for visual function recovery are reviewed and their potential applications are discussed. The photodetector, optoelectronic memory, and artificial synapse mechanisms and devices utilized in artificial systems that are based on 2D semiconductor materials are summarized. Additionally, a range of application scenarios for devices that are inspired by retinal cells and vision systems is explored. Finally, it is concluded with an overview of the critical technical challenges and strategies that must be addressed for the successful development of artificial retina technologies. It also highlights the potential for new applications in other fields, such as robotics and artificial intelligence.

Reservoir Computing Based on Oxygen-Vacancy-Mediated X-ray Optical Synaptic Device for Medical CT Bone Diagnosis

“…Photoreceptors receive lights of different wavelengths and intensities and convert them into corresponding electrical signals. 40 Released via neurotransmitters, these signals are then transmitted to visual nerve cells. These neurotransmitters regulate the short-and long-term synaptic plasticity of visual nerve cells and control the perception, memory, and computation of neuromorphic visual tasks.…”

“…In the human visual system, light signals are transmitted by photoreceptor cells to the brain for more advanced recognition. Photoreceptors receive lights of different wavelengths and intensities and convert them into corresponding electrical signals . Released via neurotransmitters, these signals are then transmitted to visual nerve cells.…”

Two-dimensional materials for future information technology: status and prospects

“…These systems offer promising solutions to the escalating need for novel computing primitives, which can integrate analog computing and perform data storage simultaneously at a single sensor level. Recent advancements in optoelectronic devices mimicking biological synapses have demonstrated significant progress, particularly based on 2D materials [935,936]. These devices respond to optical stimuli due to the unique properties of 2D materials, making them ideal candidates for NVS, which offer high resolution, low power consumption, flexibility, and bioinspired functionality [497,936,937].…”

Recent Progress of Polymeric Dielectrics in Molybdenum Disulfide-Based Devices

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