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Three-dimensional Organic Field-effect Transistors on Plastic Substrates: Flexible Transistors with Very High Output Current

Published online by Cambridge University Press:  31 January 2011

Jun Takeya ,
M. Uno  and
Kengo Nakayama
Jun Takeya
Affiliation:
takeya@sanken.osaka-u.ac.jp, Osaka University, Dept. of Chemistry, Grad. School of Science, 1-1 Machikaneyama, Toyonaka, 560-0043, Japan, +81-6-6850-5398, +81-6-6850-6797
M. Uno
Affiliation:
uno@tri.pref.osaka.jp, TRI-Osaka, Izumi, Japan
Kengo Nakayama
Affiliation:
nakayama@chem.sci.osaka-u.ac.jp, Osaka University, Toyonaka, Japan
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Abstract

Attractiveness of organic field-effect transistors are in their low-cost and easy fabrication processes as well as their mechanical flexibility, while a significant drawback has been their poorer transistor performances than those of silicon and oxide semiconductors because of lower carrier mobility in organic semiconductors. We have developed an easy MEMS-based process to fabricate three-dimensional organic transistors with metal-insulator-semiconductor structures of multiple vertical channels on plastic platforms. The design maximizes the space availability and the output current per area. The flexible three-dimensional organic transistors indeed present outstanding current of ∼ 0.5 A/cm2, which is more than sufficient for driving pixels of typical organic light-emitting diodes. High on-off ratio up to 107 is also demonstrated.

Keywords

deviceselectrical propertiesorganic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1197: Symposium D – Organic Materials for Printable Thin-Film Electronic Devices , 2009 , 1197-D09-05
Copyright
Copyright © Materials Research Society 2010

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