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Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
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Ecofriendly Solution-Combustion-Processed Thin-Film Transistors for Synaptic Emulation and Neuromorphic Computing.

Qihan Liu1,2, Chun Zhao1,2, Tianshi Zhao1,2

  • 1Department of Electrical and Electronic Engineering, Xi'an Jiaotong-Liverpool University, Suzhou 215123, China.

ACS Applied Materials & Interfaces
|April 13, 2021
PubMed
Summary

Ecofriendly combustion synthesis methods created high-quality aluminum oxide dielectrics for aqueous Indium Oxide thin-film transistors. These transistors demonstrated synaptic emulation capabilities, paving the way for efficient neuromorphic computing applications.

Keywords:
ecofriendlyhigh-kmetal oxidesolution combustion processsynaptic transistor

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Area of Science:

  • Materials Science
  • Electronics Engineering
  • Nanotechnology

Background:

  • Conventional methods for depositing high-k dielectrics often require high temperatures and specific precursors.
  • Aqueous Indium Oxide (In2O3) thin-film transistors (TFTs) are promising for flexible electronics but require high-quality gate dielectrics.
  • Developing energy-efficient and environmentally friendly synthesis methods is crucial for advanced electronic devices.

Purpose of the Study:

  • To investigate the efficacy of ecofriendly combustion synthesis (ECS) and self-combustion synthesis (ESCS) for depositing aluminum oxide (AlOx) dielectrics.
  • To apply these AlOx dielectrics in aqueous In2O3 TFTs and evaluate their electrical characteristics and memory effects.
  • To demonstrate the potential of these TFTs for synaptic emulation in artificial neural networks (ANNs) and neuromorphic computing.

Main Methods:

  • Utilized ecofriendly combustion synthesis (ECS) and self-combustion synthesis (ESCS) to deposit AlOx dielectrics at low temperatures.
  • Characterized the synthesized AlOx dielectrics using thermal analysis and chemical composition analysis.
  • Fabricated aqueous In2O3 TFTs incorporating the ECS and ESCS-AlOx dielectrics and performed electrical testing.
  • Emulated synaptic functions including short-term and long-term memory using the fabricated transistors.
  • Developed a multilayer perceptron (MLP) for image recognition using the AlOx synaptic transistors.

Main Results:

  • ECS and ESCS successfully produced high-quality AlOx dielectrics at lower temperatures compared to conventional methods.
  • Aqueous In2O3 TFTs with ECS/ESCS-AlOx exhibited enhanced electrical properties and counterclockwise transfer-curve hysteresis.
  • The transistors demonstrated memory-like behavior, enabling emulation of various synaptic functions with high stability and reproducibility.
  • Synaptic transistors achieved over 90% recognition rate in an MLP for image recognition tasks.

Conclusions:

  • ECS and ESCS are viable ecofriendly routes for low-temperature synthesis of high-quality AlOx dielectrics.
  • The developed AlOx-based aqueous In2O3 TFTs show significant potential for neuromorphic computing applications.
  • This work facilitates the implementation of metal-oxide synaptic transistors for artificial intelligence via sustainable manufacturing processes.