Physical Realization of a Supervised Learning System Built with Organic Memristive Synapses.
Multiple modern applications of electronics call for inexpensive chips that can perform complex operations on natural data with limited energy. A vision for accomplishing this is implementing hardware neural networks, which fuse computation and memory, with low cost organic electronics. A challenge, however, is the implementation of synapses (analog memories) composed of such materials. In this work, we introduce robust, fastly programmable, nonvolatile organic memristive nanodevices based on electrografted redox complexes that implement synapses thanks to a wide range of accessible intermediate conductivity states. We demonstrate experimentally an elementary neural network, capable of learning functions, which combines four pairs of organic memristors as synapses and conventional electronics as neurons. Our architecture is highly resilient to issues caused by imperfect devices. It tolerates inter-device variability and an adaptable learning rule offers immunity against asymmetries in device switching. Highly compliant with conventional fabrication processes, the system can be extended to larger computing systems capable of complex cognitive tasks, as demonstrated in complementary simulations.
LICSEN, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France.
Yu-Pu
YP
Lin
Institut d'Electronique Fondamentale, Université Paris-Sud/Paris-Saclay, CNRS, 91405 Orsay, France.
Christopher H
CH
Bennett
LICSEN, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France.
Théo
T
Cabaret
Institut d'Electronique Fondamentale, Université Paris-Sud/Paris-Saclay, CNRS, 91405 Orsay, France.
Damir
D
Vodenicarevic
Institut d'Electronique Fondamentale, Université Paris-Sud/Paris-Saclay, CNRS, 91405 Orsay, France.
Djaafar
D
Chabi
Institut d'Electronique Fondamentale, Université Paris-Sud/Paris-Saclay, CNRS, 91405 Orsay, France.
Damien
D
Querlioz
LICSEN, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France.
Bruno
B
Jousselme
LICSEN, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France.
Vincent
V
Derycke
Institut d'Electronique Fondamentale, Université Paris-Sud/Paris-Saclay, CNRS, 91405 Orsay, France.
Jacques-Olivier
JO
Klein