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A Compact Model of Ovonic Threshold Switch Combining Thermal Dissipation Effect.

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Summary

A new compact physical model for Ovonic Threshold Switch (OTS) devices, incorporating thermal effects, accurately simulates electrical characteristics. This breakthrough facilitates device design and optimization for neuromorphic computing applications.

Keywords:
chalcogenidesovonic threshold switchphysical modelthermal conductivitythermal dissipation effect

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Computational Physics

Background:

  • Ovonic Threshold Switch (OTS) devices are crucial for neuromorphic computing, enabling high-density synapse arrays and neuron functions.
  • Existing models lack completeness and simplicity, hindering device simulation and integrated circuit design.

Purpose of the Study:

  • To develop a novel, compact physical model for OTS devices.
  • To incorporate thermal dissipation effects for enhanced practical applicability.
  • To provide a tool for device simulation and integrated circuit design.

Main Methods:

  • Developed a compact physical model for OTS based on the Poole-Frenkel effect.
  • Integrated the thermal dissipation effect to account for energy flow with the environment.
  • Validated the model by comparing numerical results with experimental electrical characteristics.

Main Results:

  • The model accurately fitted experimental electrical characteristics of OTS devices.
  • Established relationships between device performance and material/structural parameters.
  • Demonstrated the model's validity and practical utility.

Conclusions:

  • The developed compact physical model offers a significant advancement for OTS device simulation and design.
  • The model's inclusion of thermal effects enhances its practical relevance.
  • This work facilitates the optimization of OTS devices for neuromorphic computing and other applications.