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Organic Field-Effect Based Devices for Pressure Detection

Published online by Cambridge University Press:  26 February 2011

Ileana Manunza  and
Annalisa Bonfiglio
Ileana Manunza
Affiliation:
[email protected], CNR-INFM S3 NanoStructures and BioSystems at Surfaces, CNR-INFM S3 NanoStructures and BioSystems at Surfaces, Via Campi 213/a, Modena, 41100, Italy, +39 070 675 5769, +39 070 675 5782
Annalisa Bonfiglio
Affiliation:
[email protected], CNR-INFM S3 NanoStructures and BioSystems at Surfaces, Via Campi 213/a, Modena, 41100, Italy
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Abstract

We describe pressure sensors realised starting from completely flexible organic thin film transistors (OTFTs). A flexible and transparent plastic foil (Mylar) is employed both as substrate and gate dielectric; gold source and drain electrodes are patterned on the upper side of the foil while the gate electrode lies on the opposite side; a vacuum-sublimed pentacene film acts as active layer. The pressure dependence of the output current has been investigated by applying to the gate side of the device a mechanical stimulus by means of a pressurized air flow. Experimental results show a reversible current dependence on pressure; further data analysis suggests that current variations are due to pressure-induced variations of mobility and threshold voltage.

Keywords

organicsensorthin film
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 965: Symposium S – Organic Electronics – Materials, Devices and Applications , 2006 , 0965-S10-03
Copyright
Copyright © Materials Research Society 2007

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References

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