Flexible organic thin-film transistors using single-walled carbon nanotubes as an activated channel

Jae Hong Kwon, Sang Il Shin, Myung Ho Chung, Ki Young Dong, James Jungho Pak, Byeong Kwon Ju

Research output: Contribution to journalArticle

Abstract

We report on the fabrication of organic thin-film transistors (OTFTs) with a spun cross linked poly-4-vinylphenol (PVP) dielectric on a polyethersulphone (PES) flexible substrate. To improve the electrical performance of OTFTs, we employed a random single-walled carbon nanotubes (SWNTs) network as a carrier transfer underlay without sacrificing the flexibility of the TFTs. The random SWNTs showed that they can act as a semiconducting channel and conduction path to shorten the channel length in our TFTs. The flexible thin-film transistors (TFTs) with a random SWNTs/pentacene bilayer as an active channel exhibited an improved saturation field effect mobility (μ sat) of 2.6 × 10 - 1 cm 2/Vs compared to that of TFTs without the SWNTs underlay, while creating only a minor reduction of the current on/off ratio.

Original languageEnglish
Pages (from-to)6168-6173
Number of pages6
JournalThin Solid Films
Volume518
Issue number22
DOIs
Publication statusPublished - 2010 Sep 1

Fingerprint

Single-walled carbon nanotubes (SWCN)
Thin film transistors
transistors
carbon nanotubes
thin films
flexibility
saturation
conduction
Fabrication
fabrication
Substrates

Keywords

  • Cross-linked poly-4-vinylphenol
  • Flexible organic thin-film transistors
  • Pentacene
  • Polyethersulphone
  • Single-walled carbon nanotubes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Flexible organic thin-film transistors using single-walled carbon nanotubes as an activated channel. / Kwon, Jae Hong; Shin, Sang Il; Chung, Myung Ho; Dong, Ki Young; Pak, James Jungho; Ju, Byeong Kwon.

In: Thin Solid Films, Vol. 518, No. 22, 01.09.2010, p. 6168-6173.

Research output: Contribution to journalArticle

Kwon, Jae Hong ; Shin, Sang Il ; Chung, Myung Ho ; Dong, Ki Young ; Pak, James Jungho ; Ju, Byeong Kwon. / Flexible organic thin-film transistors using single-walled carbon nanotubes as an activated channel. In: Thin Solid Films. 2010 ; Vol. 518, No. 22. pp. 6168-6173.
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