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Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
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Bipolar one diode-one resistor integration for high-density resistive memory applications.

Yingtao Li1, Hangbing Lv, Qi Liu

  • 1Laboratory of Nano-Fabrication and Novel Devices Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China.

Nanoscale
|April 25, 2013
PubMed
Summary

A novel bipolar 1D-1R memory device integrates a Ni/TiOx/Ti diode with a Pt/HfO2/Cu resistive random-access memory (RRAM) cell. This design effectively suppresses sneak currents, enabling high-density nonvolatile memory applications.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Solid-State Electronics

Background:

  • Conventional unipolar resistive random-access memory (RRAM) devices suffer from sneak currents in cross-point arrays.
  • Unipolar devices require external circuitry for self-compliance, limiting integration density.

Purpose of the Study:

  • To propose and demonstrate a bipolar 1D-1R memory device concept.
  • To suppress sneak current in RRAM cross-point arrays.
  • To achieve self-compliance characteristics and excellent RRAM performance.

Main Methods:

  • Integration of a Ni/TiOx/Ti diode with a Pt/HfO2/Cu bipolar RRAM cell.
  • Fabrication and characterization of the proposed 1D-1R device structure.
  • Evaluation of resistive switching behavior, data retention, and scalability.

Main Results:

  • Successful demonstration of the bipolar 1D-1R memory device.
  • Suppression of undesired sneak current in a cross-point array configuration.
  • Achieved self-compliance resistive switching due to the diode's reverse bias current.
  • Exhibited uniform switching, satisfactory data retention, and excellent scalability.

Conclusions:

  • The proposed bipolar 1D-1R memory device effectively suppresses sneak currents.
  • This device architecture offers self-compliance and robust performance characteristics.
  • High potential for high-density integrated nonvolatile memory applications.