Concentric-electrode organic electrochemical transistors: case study for selective hydrazine sensing
| العنوان: | Concentric-electrode organic electrochemical transistors: case study for selective hydrazine sensing |
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| المؤلفون: | Dominique Vuillaume, Fabien Alibart, Sébastien Pecqueur, David Guerin, Stéphane Lenfant |
| المصدر: | Sensors, Vol 17, Iss 3, p 570 (2017) Sensors; Volume 17; Issue 3; Pages: 570 Sensors (Basel, Switzerland) |
| بيانات النشر: | arXiv, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | History, Materials science, Hydrazine, FOS: Physical sciences, 02 engineering and technology, Applied Physics (physics.app-ph), 010402 general chemistry, Electrochemistry, lcsh:Chemical technology, Biochemistry, 01 natural sciences, Article, Analytical Chemistry, Education, law.invention, chemistry.chemical_compound, PEDOT:PSS, law, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), OECT, hydrazine sensor, organic electronics, microelectronics, lcsh:TP1-1185, Electrical and Electronic Engineering, Instrumentation, Bioelectronics, Condensed Matter - Mesoscale and Nanoscale Physics, business.industry, Transistor, Physics - Applied Physics, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Amperometry, 0104 chemical sciences, Computer Science Applications, chemistry, Electrode, Optoelectronics, 0210 nano-technology, business, Biosensor |
| الوصف: | We report on hydrazine-sensing organic electrochemical transistors (OECTs) with a design consisting of concentric annular electrodes. The design engineering of these OECTs was motivated by the great potential of using OECT sensing arrays in fields such as bioelectronics. In this work, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)-based OECTs have been studied as aqueous sensors that are specifically sensitive to the lethal hydrazine molecule. These amperometric sensors have many relevant features for the development of hydrazine sensors, such as a sensitivity down to 10−5 M of hydrazine in water, an order of magnitude higher selectivity for hydrazine than for nine other water-soluble common analytes, the capability to entirely recover its base signal after water flushing, and a very low operation voltage. The specificity for hydrazine to be sensed by our OECTs is caused by its catalytic oxidation at the gate electrode, and enables an increase in the output current modulation of the devices. This has permitted the device-geometry study of the whole series of 80 micrometric OECT devices with sub-20-nm PEDOT:PSS layers, channel lengths down to 1 µm, and a specific device geometry of coplanar and concentric electrodes. The numerous geometries unravel new aspects of the OECT mechanisms governing the electrochemical sensing behaviours of the device—more particularly the effect of the contacts which are inherent at the micro-scale. By lowering the device cross-talk, micrometric gate-integrated radial OECTs shall contribute to the diminishing of the readout invasiveness and therefore further promote the development of OECT biosensors. |
| وصف الملف: | application/pdf |
| DOI: | 10.48550/arxiv.1707.08158 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dbf41ddcdcb433b2d71f08de47bf9e5 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....0dbf41ddcdcb433b2d71f08de47bf9e5 |
| قاعدة البيانات: | OpenAIRE |
| DOI: | 10.48550/arxiv.1707.08158 |
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