Bulk charge transport in liquid-crystalline polymer semiconductors based on poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-b]thiophene)

M. Baklar, S. Barard, D. Sparrowe, R. M. Wilson, Iain Mcculloch, M. Heeney, T. Kreouzis, N. Stingelin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The class of liquid-crystalline semiconducting polymers based on poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-b]thiophene) recently has attracted significant interest in the field of organic electronics, predominantly due to their promising performance in field-effect transistor (FET) structures with device mobilities reaching - if not exceeding - those of amorphous silicon architectures. Less is known, however, about the bulk charge-transport properties of these interesting macromolecules. We therefore conducted time-of-flight (TOF) photoconductivity measurements on one particular material of this class of organic semiconductors - i.e. poly(2,5-bis(3-dodecylthiophen-2- yl)thieno[3,2-b]thiophene), pBTTT-C12 - and attempted to correlate the electronic bulk properties of this polymer with its microstructural development with temperature. The effect of annealing was also investigated.

Original languageEnglish (US)
Pages (from-to)1448-1452
Number of pages5
JournalPolymer Chemistry
Volume1
Issue number9
DOIs
StatePublished - Nov 1 2010

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Biochemistry
  • Biomedical Engineering
  • Bioengineering

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