Self-powered and broadband opto-sensor with bionic visual adaptation function based on multilayer γ-InSe flakes

Light Sci Appl. 2023 Jul 24;12(1):180. doi: 10.1038/s41377-023-01223-1.ABSTRACTVisual adaptation that can autonomously adjust the response to light stimuli is a basic function of artificial visual systems for intelligent bionic robots. To improve efficiency and reduce complexity, artificial visual systems with integrated visual adaptation functions based on a single device should be developed to replace traditional approaches that require complex circuitry and algorithms. Here, we have developed a single two-terminal opto-sensor based on multilayer γ-InSe flakes, which successfully emulated the visual adaptation behaviors with a new working mechanism combining the photo-pyroelectric and photo-thermoelectric effect. The device can operate in self-powered mode and exhibit good human-eye-like adaptation behaviors, which include broadband light-sensing image adaptation (from ultraviolet to near-infrared), near-complete photosensitivity recovery (99.6%), and synergetic visual adaptation, encouraging the advancement of intelligent opto-sensors and machine vision systems.PMID:37488112 | DOI:10.1038/s41377-023-01223-1
Source: Appl Human Sci - Category: Physiology Authors: Source Type: research