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Luminescent line art by direct-write patterning.

Erik Mattias Lindh1, Andreas Sandström1,2, Mats Roland Andersson3

  • 1The Organic Photonics and Electronics Group, Umeå University, Umeå, Sweden.

Light, Science & Applications
|September 1, 2018
PubMed
Summary
This summary is machine-generated.

We developed a direct-write method to create electroluminescent line art. This technique uses a stylus to pattern light-emitting electrochemical cells, enabling custom designs for unique applications.

Keywords:
direct-write patterninglight-emitting electrochemical cellluminescent line artorganic electronics

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Optoelectronics

Background:

  • Light-emitting electrochemical cells (LECs) offer potential for low-cost lighting.
  • Current fabrication methods for LECs often lack precision and scalability for intricate designs.

Purpose of the Study:

  • To introduce a direct-write patterning method for creating electroluminescent (EL) line art.
  • To explore the mechanism of light emission in patterned LECs.
  • To demonstrate the versatility of the method for various patterns and colors.

Main Methods:

  • Utilized a bilayer structure separating electrolyte and EL material in surface-emissive LECs.
  • Employed subtractive patterning of the electrolyte layer using a stylus for line-art creation.
  • Investigated the light emission mechanism via cation-assisted electron injection.

Main Results:

  • Achieved direct-write patterning of EL line art with feature sizes down to a few micrometers.
  • Demonstrated both manual and automated patterning for personalization and high throughput.
  • Showcased a wide range of emission patterns and colors using diverse materials.

Conclusions:

  • The developed method enables precise, low-voltage fabrication of luminescent line art.
  • This technology is suitable for emerging applications like active packaging and personalized electronic gadgets.
  • The cation-assisted electron injection mechanism is key to the observed light emission.