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 (μsat) of 2.6 × 10- 1 cm2/Vs compared to that of TFTs without the SWNTs underlay, while creating only a minor reduction of the current on/off ratio.
Original language | English |
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Pages (from-to) | 6168-6173 |
Number of pages | 6 |
Journal | Thin Solid Films |
Volume | 518 |
Issue number | 22 |
DOIs | |
Publication status | Published - 2010 Sep 1 |
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
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Metals and Alloys
- Materials Chemistry