Issue 48, 2014

Aqueous electrolyte-gated ZnO transistors for environmental and biological sensing

Abstract

Electrolyte-gated transistors (EGTs) based on ZnO thin films, obtained by solution processing of suspensions of nanoparticles, have a low turn-on voltage (<0.5 V), a high on/off ratio and transconductance exceeding 0.2 mS. Importantly, the ZnO surface can be functionalized with a large variety of molecular recognition elements, making these devices ideal transducers in physiological and environmental monitoring. We present simple glucose-sensing and ion-selective EGTs, demonstrating the versatility of such devices in biosensing.

Graphical abstract: Aqueous electrolyte-gated ZnO transistors for environmental and biological sensing

Supplementary files

Article information

Article type
Communication
Submitted
15 Sep 2014
Accepted
17 Oct 2014
First published
22 Oct 2014

J. Mater. Chem. C, 2014,2, 10277-10281

Author version available

Aqueous electrolyte-gated ZnO transistors for environmental and biological sensing

E. Bandiello, M. Sessolo and H. J. Bolink, J. Mater. Chem. C, 2014, 2, 10277 DOI: 10.1039/C4TC02075H

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