Mechanical force sensors using organic thin-film transistors

The pressure dependence of pentacene ( C 22 H 14 ) transistors with solution-processed polyvinylphenol gate dielectric on glass substrates is investigated by applying uniaxial mechanical pressure with a needle. We found that organic thin-film transistors are sensitive to applied pressure inherently....

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Bibliographic Details
Published in:Journal of applied physics 2005-05, Vol.97 (9), p.093708-093708-4
Main Authors: Darlinski, Grzegorz, Böttger, Ulrich, Waser, Rainer, Klauk, Hagen, Halik, Marcus, Zschieschang, Ute, Schmid, Günter, Dehm, Christine
Format: Article
Language:English
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Summary:The pressure dependence of pentacene ( C 22 H 14 ) transistors with solution-processed polyvinylphenol gate dielectric on glass substrates is investigated by applying uniaxial mechanical pressure with a needle. We found that organic thin-film transistors are sensitive to applied pressure inherently. The measurements reveal a reversible current dependence of the transfer characteristics where the drain current is switching between two states. Experimental and simulation results suggest that switch-on voltage and interface resistance are affected. The change takes seconds, hinting at trap states being responsible for the effect.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1888046