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A direct metal transfer method for cross-bar type polymer non-volatile memory applications.

Tae-Wook Kim1, Kyeongmi Lee, Seung-Hwan Oh

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Direct metal transfer (DMT) fabricates polymer non-volatile memory arrays. This simple method yields stable resistance switching with a high on/off ratio, comparable to conventional techniques for organic memory devices.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Device Physics

Background:

  • Polymer non-volatile memory offers potential for flexible electronics.
  • Fabrication of memory arrays often involves complex or costly methods.
  • Direct metal transfer (DMT) is an emerging technique for microfabrication.

Purpose of the Study:

  • To investigate the feasibility of using the direct metal transfer (DMT) method for fabricating polymer non-volatile memory devices.
  • To evaluate the performance and characteristics of memory devices produced by DMT.
  • To compare DMT fabrication with conventional methods for organic memory arrays.

Main Methods:

  • Fabrication of 8 × 8 array polymer non-volatile memory devices.
  • Utilized a non-aqueous direct metal transfer (DMT) method for top electrode deposition.
  • Employed a two-step thermal treatment process.
  • Characterized device switching behavior and on/off ratio.

Main Results:

  • Successfully fabricated polymer non-volatile memory devices in an 8x8 array using DMT.
  • Transferred top electrodes with 2 µm linewidth via the DMT method.
  • Observed switching behavior similar to devices made with conventional shadow mask methods.
  • Achieved a three orders of magnitude on/off ratio with stable resistance switching.

Conclusions:

  • The direct metal transfer (DMT) method is a viable and simple process for fabricating organic memory array devices.
  • DMT offers comparable performance to traditional methods for fabricating polymer memory.
  • This technique shows promise for efficient production of organic memory arrays.