Please use this identifier to cite or link to this item:
|Anomalous resistive switching in memristors based on two-dimensional palladium diselenide using heterophase grain boundaries
Kah Wee Ang
|Yesheng Li, Leyi Loh, Sifan Li, Li Chen, Bochang Li, Michel Bosman, Kah Wee Ang (2021-05-17). Anomalous resistive switching in memristors based on two-dimensional palladium diselenide using heterophase grain boundaries. Nature Electronics 4 (5) : 348-356. ScholarBank@NUS Repository. https://doi.org/https://doi.org/10.1038/s41928-021-00573-1
|The implementation of memristive synapses in neuromorphic computing is hindered by the limited reproducibility and high energy consumption of the switching behaviour of the devices. Typical filament-type memristors suffer, in particular, from temporal and spatial variation in the set voltage and resistance states due to stochastic filament formation. Here, we report memristors based on two-dimensional pentagonal palladium diselenide (PdSe2) that can exhibit anomalous resistive switching behaviour with two interchangeable reset modes: total reset and quasi-reset. Heterophase grain boundaries are formed in the PdSe2 via local phase transitions induced by electron-beam irradiation, which leads to residual filaments along the grain boundaries that can guide the formation of conductive filaments. When operated in the quasi-reset mode, the memristors show a sixfold improvement in switching variation compared with devices operating in the total-reset mode, as well as a low set voltage (0.6 V), long retention times and programmable multilevel resistance states. We also show that the devices can emulate synaptic plasticity and that multipattern memorization can be implemented using a crossbar array architecture.
|Appears in Collections:
Show full item record
Files in This Item:
|Nature Electronics - 2021 - Li - Anomalous Resistive Switching in Memristors based on Two Dimensional Palladium Diselenide using Heterophase Grain Boundaries.pdf
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.