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Eutectic friction transfer lithography: a facile solid-state route for highly crystalline semiconducting polymers.

Sangwon Eom1, Jae Hyun Sim, Jongchan Kim

  • 1Department of Chemistry, Hanyang University, Seoul, 04763, Korea. youngjkang@hanyang.ac.kr.

Nanoscale
|November 20, 2020
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Summary

A novel solid-state lithography method, eutectic friction transfer lithography (EFTL), creates semiconducting polymer crystals. This technique uses friction and melting to form highly ordered J-type packed crystals under mild conditions.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid-State Physics

Background:

  • Developing advanced lithography techniques is crucial for fabricating ordered nanostructures.
  • Semiconducting polymers offer unique electronic and optical properties for various applications.
  • Controlling crystal packing in polymers influences their performance.

Purpose of the Study:

  • To introduce a new solid-state lithography technique called eutectic friction transfer lithography (EFTL).
  • To demonstrate the formation of semiconducting polymer crystals using EFTL.
  • To investigate the crystal structure and properties of the fabricated microwires.

Main Methods:

  • Utilizing eutectic pellets composed of semiconducting polymers and volatile organic solid matrices.
  • Employing frictional heating and eutectic melting for material processing.
  • Fabricating semiconducting polymer crystals via a rubbing process under mild conditions.

Main Results:

  • Successfully formed various semiconducting polymer crystals using the EFTL technique.
  • Observed strong anisotropic optical properties in the EFTL-generated microwires.
  • Inferred dominant J-type packing due to highly extended and planarized crystal structures.

Conclusions:

  • EFTL is an effective solid-state lithography method for creating ordered semiconducting polymer crystals.
  • The technique allows for the formation of J-type packed structures with desirable optical properties.
  • EFTL offers a simple and mild approach for advanced materials fabrication.