A temperature transducer based on a low-voltage organic thin-film transistor detecting pyroelectric effect

COSSEDDU, PIERO;Viola F;LAI, STEFANO;RAFFO, LUIGI;BONFIGLIO, ANNALISA

2014-01-01

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Abstract

In this letter, we report a novel approach for the fabrication of temperature sensors on highly flexible plastic substrates that can be operated at low voltage. Reproducible temperature sensors have been obtained by coupling a charge-modulated organic field-effect transistor with a pyroelectric element. An accurate electrical characterization shows that these devices, because of the local amplification of the organic transistor, can reliably detect temperatures in the range 10 °C-40 °C. This architecture represents a simple and innovative solution for the realization of conformable sensing systems for applications in tactile sensing as well as in wearable electronics.