New π-extended triphenylene-based organic semiconductors in field-effect transistors

Mai Ha Hoang, Duc Nghia Nguyen, Trinh Tung Ngo, Min Ju Cho, Suk Joong Lee, Dong Hoon Choi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We demonstrated the synthesis of two new solution-processed triphenylene-based semiconductors and characterized their physical, optical, and electrochemical properties. Both were intriguingly capable of producing smooth films and high-quality microcrystalline objects. The single-crystal-based field-effect transistors (FETs) using these semiconductors displayed a maximum carrier mobility of ∼0.03 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup> and a high on/off current ratio of ∼10<sup>3</sup>. Notably, the mobilities of the single-crystal-based FETs were measured to be two orders of magnitude greater than those of the thin-film transistors. To our knowledge, the carrier mobility obtained in this work is the highest ever reported for single-crystal FETs made of triphenylene analogues.

Original languageEnglish
Article number15069
Pages (from-to)434-440
Number of pages7
JournalSynthetic Metals
Volume209
DOIs
Publication statusPublished - 2015 Nov 1

Keywords

  • Conjugated molecule
  • Field-effect transistor
  • Mobility
  • Organic semiconductor
  • Triphenylene

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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