Field effect transistors based on poly(3-hexylthiophene) at different length scales

M. Mas-Torrent, D. Den Boer, M. Durkut, P. Hadley, A. P H J Schenning

Research output: Contribution to journalArticleResearchpeer-review

Abstract

In this paper we report on thin film transistors based on drop casting solutions of regioregular poly(3-hexylthiophene) (P3HT) over prefabricated gold electrodes. This polymer is known to self-organize into a lamellar structure in chloroform resulting in high field-effect mobilities. We studied the dependency of the charge carrier mobility of devices prepared from solution in chloroform with electrode spacings ranging from 5 μm to 20 nm. It was found that the overall trend was that the mobility decreased as the electrode spacing was made smaller, indicating that the transport properties on closely spaced electrodes were dominated by the contacts. Applying an ac voltage during the preparation of such films resulted in lower mobilities. However, P3HT in p-xylene forms fibres, which were aligned between the electrodes by applying an ac field. Films of aligned fibres with mobilities as high as 0.04 cm2 V-1 s-1 were prepared.

Original languageEnglish
JournalNanotechnology
Volume15
Issue number4
DOIs
Publication statusPublished - Apr 2004
Externally publishedYes

Fingerprint

Field effect transistors
field effect transistors
Electrodes
electrodes
Chloroform
Chlorine compounds
chloroform
spacing
Lamellar structures
fibers
Fibers
Carrier mobility
xylene
Thin film transistors
Xylene
carrier mobility
Charge carriers
Gold
Transport properties
charge carriers

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Field effect transistors based on poly(3-hexylthiophene) at different length scales. / Mas-Torrent, M.; Den Boer, D.; Durkut, M.; Hadley, P.; Schenning, A. P H J.

In: Nanotechnology, Vol. 15, No. 4, 04.2004.

Research output: Contribution to journalArticleResearchpeer-review

Mas-Torrent, M. ; Den Boer, D. ; Durkut, M. ; Hadley, P. ; Schenning, A. P H J. / Field effect transistors based on poly(3-hexylthiophene) at different length scales. In: Nanotechnology. 2004 ; Vol. 15, No. 4.
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