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High mobility n-channel organic field-effect transistors based on soluble C-60 and C-70 fullerene derivatives

Woebkenberg, P. H., Bradley, D. D. C., Kronholm, D., Hummelen, J. C., de Leeuw, D. M., Coelle, M., Anthopoulos, T. D., H. Wobkenberg, P. & Colle, M., Jul-2008, In : Synthetic Metals. 158, 11, p. 468-472 5 p.

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DOI

  • Paul H. Woebkenberg
  • Donal D. C. Bradley
  • David Kronholm
  • Jan C. Hummelen
  • Dago M. de Leeuw
  • Michael Coelle
  • Thomas D. Anthopoulos
  • Paul H. Wobkenberg
  • Michael Colle

We report on n-channel organic field-effect transistors (OFETs) based on the solution processable methanofullerenes [6,6]-phenyl-C-61-butyric acid ester ([60]PCBM) and [6,6]-phenyl-C-71-butyric acid methyl ester (170]PCBM). Despite the fact that both derivatives form glassy films when processed from their electron mobilities are high and on the order of 0.21 cm(2/)V s and 0.1 cm(2)/V s, for [60]PCBM solution, and [70]PCBM, respectively. Although the derived mobility of [60]PCBM is comparable to the best values reported in the literature, the electron mobility of [70]PCBM is the highest value reported to date for any C-70 based molecule. We note that this is the only report in which C-60 and Cd-70 methanofullerenes exhibit comparable electron mobilities. The present findings could have significant implications in the area of large-area organic electronics and organic photovoltaics where C-60 derivatives have so far been the most widely used electron acceptor materials. (C) 2008 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)468-472
Number of pages5
JournalSynthetic Metals
Volume158
Issue number11
Publication statusPublished - Jul-2008

    Keywords

  • organic transistors, methanofullerenes, fullerene derivatives, n-channel, electron transport, THIN-FILM TRANSISTORS, POLYMER SOLAR-CELLS, COMPLEMENTARY CIRCUITS, SEMICONDUCTORS, METHANOFULLERENE, EFFICIENT, DESIGN

ID: 4757283