High-resolution patterned nanoparticulate Ag electrodes toward all printed organic thin film transistors

Sung Kyu Park, Yong Hoon Kim, Jeong In Han

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

High-resolution patterned nanoparticulate Ag electrode arrays and all printed organic thin film transistors (OTFTs) were demonstrated using a simple dip-casting and a photoresist-free, non-relief-pattern lithographic process. An octadecyltrichlorosilane self-assembled monolayer was deposited to provide low surface energy and patterned by deep ultraviolet light, resulting in reproducible periodic arrays of patterned hydrophilic domains separated from hydrophobic surroundings. Using a simple dip-casting with optimal withdrawal speed, viscosity, and solvent polarity, dot size and electrode width of less than 1 μm and 5 μm were obtained, respectively. All printed OTFTs were fabricated. Ink-jet printed 6,13-bis(triisopropyl-silylethynyl) pentacene OTFTs including high-resolution patterned nanoparticulate Ag source/drain electrodes (L < 10 μm) have shown similar performance to the OTFTs with photolithographically patterned electrodes.

Original languageEnglish
Pages (from-to)1102-1108
Number of pages7
JournalOrganic Electronics
Volume10
Issue number6
DOIs
StatePublished - Sep 2009

Keywords

  • Non-relief-patterned surface patterning
  • Organic thin film transistor
  • Photoresist-free process

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