An Antagonistic Photovoltaic Memristor for Bioinspired Active Contrast Adaptation.

ABSTRACT: Machine vision systems that consist of cameras and image-processing components for visual inspection and identification tasks play a critical role in various intelligent applications, including pilotless vehicles and surveillance systems. However, current systems usually possess a limited dynamic range and fixed photoresponsivity, restricting their capability of gaining high-fidelity images when encoding a high-contrast scene. Here, it is shown that a photovoltaic memristor incorporating two antagonistic photovoltaic junctions can autonomously adjust its response to varying light stimuli, enabling the amplification of shadows and inhibition of highlight saturation. Due to the dynamic photodoping effect at the p-n junction with an asymmetrical profile, the photocurrent polarities of the ant

SUBMITTER: Gong G 

PROVIDER: S-EPMC11635913 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature