We report 7- and 15-stage spin-cast contact-crystallized 2, 8-difluoro-5, 11-bis(triethylsilylethynyl) anthradithiophene (diF-TESADT) organic thin-film transistor (OTFT) ring oscillators on plastic substrates with a maximum frequency of more than 22 kHz and a propagation delay of less than 3.3 μs/stage at a supply bias of -80 V. The circuits have stable operation for a supply bias as small as -3 V (25-30 μs/stage). Spin-cast diF-TESADT OTFTs from a toluene solution on plastic substrates have a mobility of 0.1-0.2 cm2/V · s with a contact-related microstructure from pentafluorobenzenethiol-treated Au source and drain electrodes.
|Number of pages||3|
|Journal||IEEE Electron Device Letters|
|State||Published - 2008|
Bibliographical noteFunding Information:
Manuscript received April 21, 2008; revised May 19, 2008. This work was supported in part by the National Science Foundation (NSF) through the Pennsylvania State Center for Nanoscale Science, an NSF MRSEC, and in part by the Office of Naval Research. The review of this letter was arranged by Editor J. K. O. Sin.
- Flexible printing devices
- Organic thin-film transistor (OTFT)
- Printed electronics
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering