(a) Schematic diagram of the 2D OSC C8-BTBT-based phototransistor and (b) the change of post-synaptic current under optical illumination.^[40] Copyright (2019) John Wiley & Sons, Inc. (c) The structure of P3HT-PCBM based organic photodiode (OPD) device and (d) I–V curves of the organic resistive switching (ORS, blue) and OPD (red) devices, respectively.^[41] Copyright (2015) John Wiley & Sons, Inc. (e) Diagram of the PTCDI-C8/TIPS/PEN based organic photosensitive device and (f) I–V curves under dark condition and illumination with different light intensities.^[42] Copyright (2018) John Wiley & Sons, Inc. (g) Schematic illustration of the ITO/ZnO/PDR1 A/Al optoelectronic memristor and (h) reversible transitions between high resistance state and low resistance state under the circularly and linearly polarized light irradiations.^[43] Copyright (2017) John Wiley & Sons, Inc.