Figure 7.

2D-Based Optoelectronic Synapses

(A) Schematic illustration of an optoelectronic synapse using 2D material.

(B) STP and LTP behavior emulated by photonic stimuli (STP: width = 1 s, f = 0.1 Hz, LTP: width = 1 s, f = 1 Hz).

(C) STD and LTD behavior emulated by electrical stimuli (STD: width = 5 ms, f = 1 Hz, LTD: width = 5 ms, f = 10 Hz, amplitude was fixed at −8 V).

(D) Photonic potentiation and electric habituation. Reprinted with permission from (He et al., 2018). Copyright 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

(E) Demonstration of multilevel channel conductance by the application of a train of light pulses. Reprinted with permission from (Luo et al., 2020). Copyright 2020 American Chemical Society.

(F) Retention for 3 × 10³ s after LTP as a response to 20 light pulses.

(G) PPF index for varying intervals between two consecutive pulses at different wavelengths. Reprinted with permission from (Pradhan et al., 2020). © The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC) http://creativecommons.org/licenses/by-nc/4.0/