Ultrathin, organic, semiconductor/polymer blends by scanning corona-discharge coating for high-performance organic thin-film transistors

Hee Joon Jung, Yu Jin Shin, Youn Jung Park, Sung Cheol Yoon, Dong Hoon Choi, Cheolmin Park

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A new thin-film coating process, scanning corona-discharge coating (SCDC), to fabricate ultrathin tri-isopropylsilylethynyl pentacene (TIPS-PEN)/amorphous- polymer blend layers suitable for high-performance, bottom-gate, organic thin-fi lm transistors (OTFTs) is described. The method is based on utilizing the electrodynamic flow of gas molecules that are corona-discharged at a sharp metallic tip under a high voltage and subsequently directed towards a bottom electrode. With the static movement of the bottom electrode, on which a blend solution of TIPS-PEN and an amorphous polymer is deposited, SCDC provides an efficient route to produce uniform blend films with thicknesses of less than one hundred nanometers, in which the TIPS-PEN and the amorphous polymer are vertically phase-separated into a bilayered structure with a single-crystalline nature of the TIPS-PEN. A bottomgate fi eld-effect transistor with a blend layer of TIPS-PEN/polystyrene (PS) (90/10 wt%) operated at ambient conditions, for example, indeed exhibits a highly reliable device performance with a fi eld-effect mobility of approximately 0.23 cm 2 V-1 s-1: two orders of magnitude greater than that of a spincoated blend fi lm. SCDC also turns out to be applicable to other amorphous polymers, such as poly(α-methyl styrene) and poly(methyl methacrylate) and, readily combined with the conventional transfer-printing technique, gives rise to micropatterned arrays of TIPS-PEN/polymer films.

Original languageEnglish
Pages (from-to)2903-2910
Number of pages8
JournalAdvanced Functional Materials
Volume20
Issue number17
DOIs
Publication statusPublished - 2010 Sep 9

Fingerprint

Semiconducting organic compounds
electric corona
polymer blends
organic semiconductors
Thin film transistors
Polymer blends
transistors
Scanning
coatings
Coatings
scanning
polymers
thin films
Polymers
Transistors
Electrodes
electrodes
Electrodynamics
Polymethyl methacrylates
Polymer films

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Ultrathin, organic, semiconductor/polymer blends by scanning corona-discharge coating for high-performance organic thin-film transistors. / Jung, Hee Joon; Shin, Yu Jin; Park, Youn Jung; Yoon, Sung Cheol; Choi, Dong Hoon; Park, Cheolmin.

In: Advanced Functional Materials, Vol. 20, No. 17, 09.09.2010, p. 2903-2910.

Research output: Contribution to journalArticle

Jung, Hee Joon ; Shin, Yu Jin ; Park, Youn Jung ; Yoon, Sung Cheol ; Choi, Dong Hoon ; Park, Cheolmin. / Ultrathin, organic, semiconductor/polymer blends by scanning corona-discharge coating for high-performance organic thin-film transistors. In: Advanced Functional Materials. 2010 ; Vol. 20, No. 17. pp. 2903-2910.
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