Organic thin-film transistors based on carbonyl-functionalized quaterthiophenes: High mobility N-channel semiconductors and ambipolar transport

Myung Han Yoon, Sara A. DiBenedetto, Antonio Facchetti, Tobin J. Marks

Research output: Contribution to journalArticle

311 Citations (Scopus)

Abstract

New carbonyl-functionalized quaterthiophenes, 5, 5′″-diheptanoyl-2,2′:5′,2″:5″,2′″-quaterthiophene (DHCO-4T), 5, 5′″-diperfluorohexylcarbonyl-2,2′:5′,2″:5″,2′″-quaterthiophene (DFHCO-4T), and 2,7-[bis-(5-perfluorohexylcarbonylthien-2-yl)]-4H-cyclopenta[2,1-b:3,4-b′]-dithiophen-4-one (DFHCO-4TCO) have been synthesized and characterized. Field-effect transistors fabricated with these materials exhibit high electron mobilities both in a vacuum (up to 0.6 cm2 V-1 s-1) and in air (up to 0.02 cm2 V-1 s-1) and very high Ion:Ioff currents ratios (>107). DHCO-4T is the first organic material exhibiting excellent ambipolar transport (μeh up to 0.1/0.01 cm2 V-1 s-1, (Ion:Ioff)e/(Ion:Ioff)h up to 107/108 for the same device) over a broad range of deposition temperatures. These materials are therefore promising for organic complementary circuits.

Original languageEnglish
Pages (from-to)1348-1349
Number of pages2
JournalJournal of the American Chemical Society
Volume127
Issue number5
DOIs
Publication statusPublished - Feb 9 2005

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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