Circularly Polarized Light-Responsive Flexible Synapses Based on Supramolecular n -Type Chiral Organic Single Crystal/ p -Type Polymer Heterojunctions

High Resolution Image Download MS PowerPoint Slide Chiral neuromorphic devices that detect both circularly polarized light and digitized electrical signals are cutting-edge combinations of neuromorphic engineering and chiral optoelectronics that may advance both computing and sensing. In this work, organic electrochemical transistors (OECTs) based on n -type 2D organic single-crystal/ p -type polymer heterojunctions are described. The supramolecular characteristics and molecular packing modes of the single crystals endowed the system with a high polarization selectivity. Furthermore, the integration of a p–n heterojunction facilitated modulation of charge trapping and separation at the interface, leading to improved chiroptical sensitivity. The devices emulate key features of biological synapses, including paired-pulse facilitation (PPF) and synaptic plasticity according to number, volta…