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Direct-Write Optical Patterning of P3HT Films Beyond the Diffraction Limit.

Ian E Jacobs1, Erik W Aasen2, Derek Nowak3

  • 1Department of Materials Science and Engineering, University of California Davis, One Shields Avenue, Davis, CA, 95616, USA.

Advanced Materials (Deerfield Beach, Fla.)
|October 15, 2016
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Summary

This study introduces doping-induced solubility control for patterning semiconducting polymers. This technique allows for precise optical control over film topography and doping levels with high resolution.

Keywords:
dopinglithographyorganic electronicspatterningpolymers

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Semiconducting polymers are crucial for organic electronics.
  • Patterning techniques are essential for device fabrication.
  • Controlling polymer solubility is key to creating functional patterns.

Purpose of the Study:

  • To develop a novel patterning technique for semiconducting polymers using doping-induced solubility control.
  • To demonstrate in situ direct-write patterning and imaging capabilities.
  • To investigate the optical modulation of doping levels with high resolution.

Main Methods:

  • Utilizing the reduction in polymer solubility upon p-type doping.
  • Implementing in situ direct-write patterning and imaging.
  • Employing photoinduced force microscopy for analysis.

Main Results:

  • Achieved direct, optical control of film topography.
  • Demonstrated sub-diffraction-limited topographic features.
  • Showcased optical modulation of doping levels with high resolution.

Conclusions:

  • Doping-induced solubility control is an effective patterning technique for semiconducting polymers.
  • This method offers precise optical control over topography and doping.
  • The technique enables high-resolution patterning for advanced organic electronics.