Effect of HAuCl4 doping on the contact properties of polymer thin-film transistors

Yeong Don Park, Jung Ah Lim, Donghoon Kwak, Jeong Ho Cho, Kilwon Cho

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We show that the electrical properties of polymer thin-film transistors can be enhanced by doping poly(3-hexylthiophene) (P3HT) with HAuCl4. Specifically, the addition of HAuCl4 causes an increase in the two-dimensional molecular ordering of P3HT and a remarkable reduction in the contact resistance at the electrode/semiconductor interface with no pre- or post-treatment process. This phenomenon is understood in terms of broadening of the transport manifold in the organic semiconductor, induced by HAuCl 4, which results in a reduction in the hole-injection barrier and an enhancement of the interfacial stability at the contact between the printed electrode and the semiconductor layers.

Original languageEnglish
Pages (from-to)H312-H314
JournalElectrochemical and Solid-State Letters
Issue number8
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering


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