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Translating Extracellular Electron Transfer Activities with Organic Electrochemical Transistors
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High performance organic transistor active-matrix driver developed on paper substrate.

Boyu Peng1, Xiaochen Ren1, Zongrong Wang1

  • 1Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong.

Scientific Reports
|September 20, 2014
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Summary

Researchers created organic field-effect transistor (OFET) active-matrix (AM) arrays on paper using screen-printing and laser drilling. These paper-based electronics offer a sustainable solution for flexible displays and drivers.

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Sustainable Technology

Background:

  • Electronic circuits on unconventional substrates expand applications, with biodegradable or recyclable materials offering solutions to electronic waste.
  • Green electronics utilizing sustainable substrates can help mitigate end-of-life solid waste issues.

Purpose of the Study:

  • To fabricate organic field-effect transistor (OFET) active-matrix (AM) arrays on standard printer paper.
  • To demonstrate the potential of paper-based electronics for practical applications like display drivers.

Main Methods:

  • Combination of screen-printing, high-precision laser drilling, and thermal evaporation.
  • Fabrication of organic field-effect transistor (OFET) active-matrix (AM) arrays on standard printer paper.

Main Results:

  • Achieved high device performance with mobility up to 0.56 cm(2)V(-1)s(-1) and an on/off ratio of 10(9).
  • Demonstrated a cut-off frequency of 39 kHz due to small electrode overlap, suitable for practical applications.
  • Successfully fabricated an 8x8 AM light-emitting diode (LED) driver with programmable scanning and information display.

Conclusions:

  • Paper-based OFET AM arrays are feasible and demonstrate high performance.
  • The developed technology has excellent potential for scaling up and for novel applications in green electronics.
  • This work highlights the viability of using readily available materials like paper for advanced electronic systems.