The transition to smart wearable and flexible optoelectronic devices communicating with each other and performing neuromorphic computing at the edge is a big goal in next-generation optoelectronics. These devices should perform their regular tasks supported by energy-efficient in-memory calculations. Here, we study the response of the CsPbBr3 halide-perovskite single crystal fabricated on the flexible polymer substrate and integrated with the single-walled carbon nanotube thin film electrodes in a lateral geometry. We show both photodetection functions combined with the synaptic functionality in our device under the application of hybrid optoelectrical stimuli. Furthermore, we demonstrate that our device exhibits frequency-dependent bidirectional modification of synaptic weight with a sliding threshold similar to biologically plausible Bienenstock-Cooper-Munro learning. The demonstrated optoelectronic synaptic behavior in halide-perovskite single-crystals opens the opportunity for the development of hybrid organic-inorganic artificial visual systems.
@article{arxiv.2312.09314,
title = {Biorealistic Response in Optoelectrically-Driven Flexible Halide-Perovskite Single-Crystal Memristors},
author = {Ivan Matchenya and Anton Khanas and Roman Podgornyi and Daniil Shirkin and Alexey Ekgardt and Nikita Sizykh and Sergey Anoshkin and Dmitry V. Krasnikov and Alexei Yulin and Alexey Zhukov and Albert G. Nasibulin and Ivan Scheblykin and Anatoly Pushkarev and Andrei Zenkevich and Juan Bisquert and Alexandr Marunchenko},
journal= {arXiv preprint arXiv:2312.09314},
year = {2025}
}