{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,9,16]],"date-time":"2024-09-16T07:18:16Z","timestamp":1726471096517},"reference-count":26,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2016,9,28]],"date-time":"2016-09-28T00:00:00Z","timestamp":1475020800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"MINECO\/FEDER","award":["MAT2015-64139-C4-3-R"]},{"DOI":"10.13039\/501100003359","name":"GVA","doi-asserted-by":"publisher","award":["AICO\/2015\/103"],"id":[{"id":"10.13039\/501100003359","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"A novel screen-printing fabrication method was used to prepare organic electrochemical transistors (OECTs) based on poly(3,4-ethylenedioxythiophene) doped with polysterene sulfonate (PEDOT:PSS). Initially, three types of these screen-printed OECTs with a different channel and gate areas ratio were compared in terms of output characteristics, transfer characteristics, and current modulation in a phosphate buffered saline (PBS) solution. Results confirm that transistors with a gate electrode larger than the channel exhibit higher modulation. OECTs with this geometry were therefore chosen to investigate their ion-sensitive properties in aqueous solutions of cations of different sizes (sodium and rhodamine B). The effect of the gate electrode was additionally studied by comparing these all-PEDOT:PSS transistors with OECTs with the same geometry but with a non-polarizable metal gate (Ag). The operation of the all-PEDOT:PSS OECTs yields a response that is not dependent on a Na+ or rhodamine concentration. The weak modulation of these transistors can be explained assuming that PEDOT:PSS behaves like a supercapacitor. In contrast, the operation of Ag-Gate OECTs yields a response that is dependent on ion concentration due to the redox reaction taking place at the gate electrode with Cl\u2212 counter-ions. This indicates that, for cation detection, the response is maximized in OECTs with non-polarizable gate electrodes.<\/jats:p>","DOI":"10.3390\/s16101599","type":"journal-article","created":{"date-parts":[[2016,9,28]],"date-time":"2016-09-28T14:56:13Z","timestamp":1475074573000},"page":"1599","source":"Crossref","is-referenced-by-count":11,"title":["Characterization of Screen-Printed Organic Electrochemical Transistors to Detect Cations of Different Sizes"],"prefix":"10.3390","volume":"16","author":[{"given":"Laura","family":"Contat-Rodrigo","sequence":"first","affiliation":[{"name":"Group of Electronic Development and Printed Sensors (GEDPS), Centro de Reconocimiento Molecular y Desarrollo Tecnol\u00f3gico, Unidad Mixta UPV-UV, Valencia 46022, Spain"}]},{"given":"Clara","family":"P\u00e9rez-Fuster","sequence":"additional","affiliation":[{"name":"Group of Electronic Development and Printed Sensors (GEDPS), Centro de Reconocimiento Molecular y Desarrollo Tecnol\u00f3gico, Unidad Mixta UPV-UV, Valencia 46022, Spain"}]},{"ORCID":"http:\/\/orcid.org\/0000-0003-3839-7878","authenticated-orcid":false,"given":"Jos\u00e9","family":"Lid\u00f3n-Roger","sequence":"additional","affiliation":[{"name":"Group of Electronic Development and Printed Sensors (GEDPS), Centro de Reconocimiento Molecular y Desarrollo Tecnol\u00f3gico, Unidad Mixta UPV-UV, Valencia 46022, Spain"}]},{"given":"Annalisa","family":"Bonfiglio","sequence":"additional","affiliation":[{"name":"Dipartimento di Ingegneria Elettrica ed Elettronica, Universit\u00e0 di Cagliari, Piazza d\u2019 Armi, Cagliari 09123, Italy"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-9745-8485","authenticated-orcid":false,"given":"Eduardo","family":"Garc\u00eda-Breijo","sequence":"additional","affiliation":[{"name":"Group of Electronic Development and Printed Sensors (GEDPS), Centro de Reconocimiento Molecular y Desarrollo Tecnol\u00f3gico, Unidad Mixta UPV-UV, Valencia 46022, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2016,9,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"578","DOI":"10.1039\/c39770000578","article-title":"Synthesis of electrically conducting organic polymers: Halogen derivatives of polyacetylene, (CH)x","volume":"16","author":"Shirakawa","year":"1977","journal-title":"J. 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