%0 Journal Article
%T All-Solid-State Synaptic Transistors with High-Temperature Stability Using Proton Pump Gating of Strongly Correlated Materials
%J -
%D 2019
%R https://doi.org/10.1021/acsami.9b00392
%X Designing energy-efficient artificial synapses with adaptive and programmable electronic signals is essential to effectively mimic synaptic functions for brain-inspired computing systems. Here, we report all-solid-state three-terminal artificial synapses that exploit proton-doped metal¨Cinsulator transition in a correlated oxide NdNiO3 (NNO) channel by proton (H+) injection/extraction in response to gate voltage. Gate voltage reversibly controls the H+ concentration in the NNO channel with facile H+ transport from a H+-containing porous silica electrolyte. Gate-induced H+ intercalation in the NNO gives rise to nonvolatile multilevel analogue states due to H+-induced conductance modulation, accompanied by significant modulation of the out-of-plane lattice parameters. This correlated transistor operated by a proton pump shows synaptic characteristics such as long-term potentiation and depression, with nonvolatile and distinct multilevel conductance switching by a low voltage pulse (¡Ý 50 mV), with high energy efficiency (¡«1 pJ) and tolerance to heat (¡Ü150 ¡ãC). These results will guide the development of scalable, thermally-stable solid-state electronic synapses that operate at low voltage
%U https://pubs.acs.org/doi/10.1021/acsami.9b00392