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Proceedings Paper

Design and fabrication of OTFT based flexible piezoelectric sensor
Author(s): Taeksoo Ji; Mayakuthan Kathiresan; Shiny Nair; Soyoun Jung; Venkatachalam Natarajan; Rama Mohan Rao Vishnubhatla; Vijay K. Varadan
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Paper Abstract

Design and fabrication of Organic Thin Film Transistor (OTFT) based miniaturized piezoelectric sensor is presented in this investigation. The device is fabricated on flexible polyethylene naphthalate (PEN) film, using the small-molecule hydrocarbon pentacene as the semiconductor layer and solution-processed polyvinylphenol as the gate dielectric. Field effect mobility of the OTFT is greater than 0.01 cm2/Vs, Ion/Ioff current ratio greater than 105. The piezoelectric polymer, Polyvinylidene Fluoride (PVDF) is used as the sensor layer that is attached over the extended gate metal electrode of the OTFT. OTFT, which is in close proximity with sensor, serves as the amplifier to amplify the signal generated by piezoelectric sensor.

Paper Details

Date Published: 11 April 2007
PDF: 6 pages
Proc. SPIE 6528, Nanosensors, Microsensors, and Biosensors and Systems 2007, 65281P (11 April 2007); doi: 10.1117/12.735864
Show Author Affiliations
Taeksoo Ji, Univ. of Arkansas (United States)
Mayakuthan Kathiresan, Naval Physical and Oceanographic Lab. (India)
Shiny Nair, Naval Physical and Oceanographic Lab. (India)
Soyoun Jung, Univ. of Arkansas (United States)
Venkatachalam Natarajan, Naval Physical and Oceanographic Lab. (India)
Rama Mohan Rao Vishnubhatla, Naval Physical and Oceanographic Lab. (India)
Vijay K. Varadan, Univ. of Arkansas (United States)

Published in SPIE Proceedings Vol. 6528:
Nanosensors, Microsensors, and Biosensors and Systems 2007
Vijay K. Varadan, Editor(s)

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