Thin-film morphologies and solution-processable field-effect transistor behavior of a fluorene - Thieno[3,2-b]thiophene-based conjugated copolymer

Eunhee Lim, Byung Jun Jung, Jaemin Lee, Hong Ku Shim, Jeong Ik Lee, Yong Suk Yang, Lee Mi Do

Research output: Contribution to journalArticlepeer-review

122 Scopus citations

Abstract

A fluorene- and thienol[3,2-b]thiophene-based copolymer suitable for use as semiconducting materials in solution-processable organic field-effect transistors were synthesized. Replacement of the flexible bithiophene in F8T2 with a rigid fused thieno[3,2-b]thiophene yielded a polymer (F8TT) with higher crystallinity and an ordered morphology. Improvements in the performances of TFTs based on F8TT should be possible by the optimization of the fabrication conditions and/or the alignment technique for molecular orientation. The study provides valuable information on the relationship between the molecular structure of a semiconducting material and its electrical performance in thin film electronic devices.

Original languageEnglish
Pages (from-to)4531-4535
Number of pages5
JournalMacromolecules
Volume38
Issue number10
DOIs
StatePublished - 17 May 2005

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