Author(s): Li, Y (Li, Ying); Shen, GZ (Shen, Guozhen)

Source: CELL REPORTS PHYSICAL SCIENCE Volume: 3 Issue: 9 Article Number: 101037 DOI: 10.1016/j.xcrp.2022.101037 Published: SEP 21 2022

Abstract: The biological neuromorphic system exhibits a high degree of con-nectivity to process information. Inspired by function, optoelec-tronic synapses are expected to pave a way to overcome the von Neumann bottleneck for nonconventional computing, which inte-grates synaptic and optical-sensing functions for visual information processing and complex learning and memory in an energy-efficient way. Herein, this review summarizes the working mechanisms of light-stimulated artificial synapses, including ionization and dissoci-ation of oxygen vacancies, capture and release of carriers through barriers formed by heterojunctions, capture and release of carriers at the semiconductor and dielectric interface, and phase transition. Then, we present a comprehensive overview of the advanced prog-ress in different material systems, including two-dimensional mate-rials, organic material, metal halide, and metal oxide. The existing application scenarios of various synaptic devices are outlined. Finally, the current challenges and perspective toward the develop-ment of optoelectronic artificial synapses are briefly discussed for future applications.

Accession Number: WOS:000874915400001

eISSN: 2666-3864

Full Text: https://www.sciencedirect.com/science/article/pii/S2666386422003319?via%3Dihub