Reconfigurable and nonvolatile ferroelectric bulk photovoltaics based on 3R-WS₂ for machine vision.

ABSTRACT: Hardware implementation of reconfigurable and nonvolatile photoresponsivity is essential for advancing in-sensor computing for machine vision applications. However, existing reconfigurable photoresponsivity essentially depends on the photovoltaic effect of p-n junctions, which photoelectric efficiency is constrained by Shockley-Queisser limit and hinders the achievement of high-performance nonvolatile photoresponsivity. Here, we employ bulk photovoltaic effect of rhombohedral (3R) stacked/interlayer sliding tungsten disulfide (WS₂) to surpass this limit and realize highly reconfigurable, nonvolatile photoresponsivity with a retinomorphic photovoltaic device. The device is composed of graphene/3R-WS₂/graphene all van der Waals layered structure, demonstrating a wide ra

SUBMITTER: Gong Y 

PROVIDER: S-EPMC11695928 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature