Reconfigurable and nonvolatile ferroelectric bulk photovoltaics based on 3R-WS2 for machine vision
Nanyang Technological University · Hong Kong Polytechnic University
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…
Citation impact
- FWCI
- 19.57
- Percentile
- 100%
- References
- 46
Authors
10Topics & keywords
- Tungsten disulfide
- Materials science
- Graphene
- Optoelectronics
- Computer science
- Photovoltaic system
- Photovoltaics
- van der Waals force
- Affordable and clean energy