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Flexible pentacene organic thin film transistor circuits fabricated directly onto elastic silicone membranes

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2 Author(s)
Graz, Ingrid M. ; Department of Engineering, Nanoscience Centre, University of Cambridge, 11 J.J Thomson Avenue, Cambridge CB3 OFF, United Kingdom ; Lacour, Stephanie P.

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We have fabricated flexible pentacene thin film transistors (OTFTs) and active load inverter circuits directly onto polydimethylsiloxane (PDMS) membranes. Gold electrodes, parylene C gate dielectric, and pentacene films are deposited using a room temperature and all-vapor phase process on spin-coated or cast PDMS. The channel stack on PDMS is wrinkled but crack-free. The devices have good electrical properties with saturation mobilities up to 0.2 cm2/V s, and on/off current ratio of 5×104. The OTFT circuits on PDMS withstand modest repeated bending without electrical failure.

Published in:

Applied Physics Letters  (Volume:95 ,  Issue: 24 )

Date of Publication:

Dec 2009

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