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Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors
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Contact-induced crystallinity for high-performance soluble acene-based transistors and circuits.

D J Gundlach1, J E Royer, S K Park

  • 1Semiconductor Electronics Division, Electronics and Electrical Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8120, USA. david.gundlach@nist.gov

Nature Materials
|February 19, 2008
PubMed
Summary

We developed a low-cost method to control organic thin film microstructure by modifying interfacial chemistry. This approach enables high-performance organic electronics fabricated rapidly under ambient conditions.

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Thin Film Physics

Background:

  • Organic materials offer potential for large-area electronics, but cost-effective manufacturing often compromises device performance.
  • Low-temperature deposition and patterning techniques are crucial for commercialization but typically result in lower performance.

Purpose of the Study:

  • To present a low-cost method for controlling the microstructure of solution-cast acene-based organic thin films.
  • To demonstrate that tailored interfacial chemistry can initiate selective crystallization of organic semiconductors.
  • To enable fabrication of high-performance organic thin-film transistors (OTFTs) and circuits.

Main Methods:

  • Modification of interfacial chemistry at source/drain contacts to control film microstructure.
  • Utilizing soluble organic semiconductors for solution-casting techniques.
  • Fabricating organic thin-film transistors (OTFTs) and circuits.

Main Results:

  • Selective crystallization of organic semiconductors initiated by tailored contact interfaces.
  • Growth of crystalline films extending from opposing contacts into the transistor channel.
  • Demonstration of high-performance organic thin-film transistors (OTFTs) and circuits fabricated via this method.

Conclusions:

  • Tailoring interfacial chemistry is a novel route to control organic semiconductor crystallization.
  • High-performance organic electronics can be achieved through rapid, low-cost processing under ambient conditions.
  • This approach connects molecular design with device fabrication for improved organic electronic devices.