Conception of a Smart Artificial Retina Based on a Dual‐Mode Organic Sensing Inverter. Issue 16 (6th June 2021)

• Record Type: Journal Article
• Authors: Hung, Chih‐Chien; Chiang, Yun‐Chi; Lin, Yan‐Cheng; Chiu, Yu‐Cheng; Chen, Wen‐Chang
• Is Part Of: Advanced science. Volume 8:Issue 16(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-06-06
• Subjects: inverter -- photodetector -- photorecorder -- smart artificial retina; Science -- Periodicals; 505
• DOI: 10.1002/advs.202100742
• Languages: English
• ISSNs: 2198-3844

Abstract

Abstract: The human visual system enables perceiving, learning, remembering, and recognizing elementary visual information (light, colors, and images), which has inspired the development of biomimicry visual system‐based electronic devices. Photosensing and synaptic devices are integrated into these systems to realize elementary information storage and recognition to imitate image processing. However, the severe restrictions of the monotonic light response and complicated circuitry design remain challenges for the development of artificial visual devices. Here, the concept of a smart artificial retina based on an organic optical sensing inverter device that can be operated as a multiwavelength photodetector and recorder is reported first. The device exhibits a light‐triggered broadband (red/green/blue) response, a low energy consumption as low as ±5 V, and an ultrafast response speed (<300 ms). Moreover, the multifunctional component is also combined within a single cell for health monitoring of the artificial retina during light surveillance to avoid retinopathy. Proof‐of‐concept devices, by simplifying the circuitry and providing dual‐mode functions, can contribute significantly to the development of bionics design and broaden the horizon for smart artificial retinas in the human visual system. Abstract : An organic optical sensing inverter based on the N and P‐type field‐effect transistors is first proposed, presenting dual‐mode functions for red/green/blue photoreceptors and blue‐ray surveillance within a single cell. Through the bilayer configurations, the device exhibits a light‐triggered broadband response, low energy consumption (±5 V), and an ultrafast response (<300 ms).