Chromophore fluorination enhances crystallization and stability of soluble anthradithiophene semiconductors

Sankar Subramanian, Kyu Park Sung, Sean R. Parkin, Vitaly Podzorov, Thomas N. Jackson, John E. Anthony

Research output: Contribution to journalArticlepeer-review

292 Scopus citations

Abstract

We report dramatic improvements in the stability and crystallinity arising from partial fluorination of soluble anthradithiophene derivatives. These fluorinated materials still behave as p-type semiconductors but with dramatic increases in thermal and photostability compared to the non-fluorinated derivatives. The triethylsilyl-substituted material forms highly crystalline films even from spin-cast solutions, leading to devices with maximum hole mobility greater than1.0 cm2/V s. In contrast, the triisopropylsilyl derivative forms large, high-quality crystals that could serve as the substrate for transistor fabrication. For this compound, mobility as high as 0.1 cm2/V s was measured on the free-standing crystal.

Original languageEnglish (US)
Pages (from-to)2706-2707
Number of pages2
JournalJournal of the American Chemical Society
Volume130
Issue number9
DOIs
StatePublished - Mar 5 2008

All Science Journal Classification (ASJC) codes

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

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