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Research Article

Directly patternable, highly conducting polymers for broad applications in organic electronics

Joung Eun Yoo, Kwang Seok Lee, Andres Garcia, Jacob Tarver, Enrique D. Gomez, Kimberly Baldwin, Yangming Sun, Hong Meng, Thuc-Quyen Nguyen, and Yueh-Lin Loo
  1. aDepartment of Chemical Engineering, Princeton University, A215 Engineering Quadrangle, Princeton, NJ 08544;
  2. bDepartment of Chemical Engineering, University of Texas at Austin, 1 University Station C0400, Austin, TX 78712;
  3. cDepartment of Chemistry and Biochemistry 9510, University of California, Santa Barbara, CA 93106; and
  4. dDuPont Central Research and Development, Wilmington, DE 19880

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PNAS first published March 8, 2010; https://doi.org/10.1073/pnas.0913879107
Joung Eun Yoo
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Kwang Seok Lee
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Andres Garcia
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Jacob Tarver
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Enrique D. Gomez
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Kimberly Baldwin
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Yangming Sun
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Hong Meng
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Thuc-Quyen Nguyen
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Yueh-Lin Loo
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  • For correspondence: lloo@princeton.edu
  1. Edited by Allen J. Bard, University of Texas at Austin, Austin, TX, and approved February 10, 2010 (received for review December 1, 2009)

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Abstract

Postdeposition solvent annealing of water-dispersible conducting polymers induces dramatic structural rearrangement and improves electrical conductivities by more than two orders of magnitude. We attain electrical conductivities in excess of 50 S/cm when polyaniline films are exposed to dichloroacetic acid. Subjecting commercially available poly(ethylene dioxythiophene) to the same treatment yields a conductivity as high as 250 S/cm. This process has enabled the wide incorporation of conducting polymers in organic electronics; conducting polymers that are not typically processable can now be deposited from solution and their conductivities subsequently enhanced to practical levels via a simple and straightforward solvent annealing process. The treated conducting polymers are thus promising alternatives for metals as source and drain electrodes in organic thin-film transistors as well as for transparent metal oxide conductors as anodes in organic solar cells and light-emitting diodes.

  • electrical conductivity
  • solar cells
  • thin-film transistors
  • light-emitting diodes
  • polyaniline

Footnotes

  • 1To whom correspondence should be addressed. E-mail: lloo{at}princeton.edu.
  • Author contributions: Y.-L.L. designed research; J.E.Y., K.S.L., A.G., J.T., and K.B. performed research; E.D.G., Y.S., and H.M. contributed new reagents/analytic tools; J.E.Y., K.S.L., A.G., and T.-Q.N. analyzed data; and J.E.Y., J.T., T.-Q.N., and Y.-L.L. wrote the paper.

  • The authors declare no conflict of interest.

  • This article is a PNAS Direct Submission.

  • This article contains supporting information online at www.pnas.org/cgi/content/full/0913879107/DCSupplemental.

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Directly patternable, highly conducting polymers for broad applications in organic electronics
Joung Eun Yoo, Kwang Seok Lee, Andres Garcia, Jacob Tarver, Enrique D. Gomez, Kimberly Baldwin, Yangming Sun, Hong Meng, Thuc-Quyen Nguyen, Yueh-Lin Loo
Proceedings of the National Academy of Sciences Mar 2010, DOI: 10.1073/pnas.0913879107

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Directly patternable, highly conducting polymers for broad applications in organic electronics
Joung Eun Yoo, Kwang Seok Lee, Andres Garcia, Jacob Tarver, Enrique D. Gomez, Kimberly Baldwin, Yangming Sun, Hong Meng, Thuc-Quyen Nguyen, Yueh-Lin Loo
Proceedings of the National Academy of Sciences Mar 2010, DOI: 10.1073/pnas.0913879107
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