Title :
Polymeric Substrate Spin-Cast diF-TESADT OTFT Circuits
Author :
Park, Sung Kyu ; Mourey, Devin A. ; Subramanian, Sankar ; Anthony, John E. ; Jackson, Thomas N.
Author_Institution :
Korea Electron. Technol. Inst., Pyungtaek
Abstract :
We report 7- and 15-stage spin-cast contact- crystallized 2, 8-difluoro-5, ll-bis(triethylsilylethynyl) anthra- dithiophene (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 mus/stage at a supply bias of -80 V. The circuits have stable operation for a supply bias as small as -3 V (25-30 mus/stage). Spin-cast diF-TESADT OTFTs from a toluene solution on plastic substrates have a mobility of 0.1-0.2 cm2/V ldr s with a contact-related micro- structure from pentafluorobenzenethiol-treated Au source and drain electrodes.
Keywords :
flexible electronics; oscillators; polymers; thin film transistors; 2,8-difluoro-5,11-bis(triethylsilylethynyl) anthradithiophene; flexible printing devices; organic thin-film transistor ring oscillators; plastic substrates; polymeric substrate; spin casting; voltage -80 V; Circuits; Crystallization; Frequency; Organic thin film transistors; Plastics; Polymers; Propagation delay; Ring oscillators; Substrates; Thin film transistors; Flexible printing devices; organic thin-film transistor (OTFT); printed electronics;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2008.2000891